Serial real-time clock calibration

ST launched the world's first factory calibration of serial real-time clock (RTC) chips, due to omitted time-consuming calibration step, the use of these products, customers can simplify the assembly and testing operations. New Real-Time Clock M41T83 and M41T93 crystal package using built-in advance about the calibration accuracy of 5ppm, clock and date for the user equipment has brought new precision timing. Using a one-time programmable (OTP) register, ST can be tested in the factory during the fine-tuning on-chip 32.768 kHz oscillator internal load capacitance to ensure that these products a month time accuracy within 12 seconds. In addition to serial interfaces, these two new products share the same standards. M41T83 includes a 400 kHz I2C interface, while the M41T93 using 10 MHz SPI bus interface, is the world's first to run at speeds up to 10 MHz of real-time clock chip. These two new products, the first time introduced a series of advanced features, including analog calibration, a programmable auto-reload counter / timer and two alarms. In addition to the factory-programmed register, this product has also added a two analog calibration register, the user can reach through the register before the factory calibration settings. This feature is beneficial to adjust the ambient temperature because of errors caused by stray capacitance on the board or amend the accuracy of the impact of the time. Crystal-free QFN16 packages, the applications also need to register the new. Oscillator adjustment immediately in the test signal output to provide users with real-time Feedback adjustment. Auto-reload counter / timer with four user-selectable clock source of a complementary work to generate timing waveforms and provide periodic interrupt signal processors. Two programmable alarm pin through the two independent output signals in order to meet the needs of multiple applications to remind time. Both products include an on-board precision voltage reference tubes, automatically switch to standby power circuit a precise definition of the threshold pressure. This two-chip back-up supply current as low as 450nA (typical value), especially suitable for back-up power supply for capacitor applications, as well as the battery as a standby power products, in addition, as a result of the use of low-power manufacturing process, the minimum under 1.8V able to ensure precise timing. Built-in battery back-up monitor power supply voltage is responsible for inspection, when the need to replace the battery signal when prompted. Other features include 12 bytes of NVRAM and an oscillator failure detection circuit. If the oscillator pulse signals the loss of more than 3, oscillator failure detection circuit will be prompted to set up a bit to back-up power supply voltage may be too low, which may affect the accuracy of the time. In a back-up power supply for the capacitor applications, under-voltage during the regular session happen. Chip also integrates a programmable square-wave signal generator and a watchdog. When the supply voltage VCC disconnected, the chip will automatically transfer back-up power, to generate a 200ms power is restored after the reset signal exists. The power-on reset / low voltage detection for design engineers to save an independent board reset IC. Switching threshold voltage reset circuit and there are three voltage values (nominal 2.93V, 2.63V and 2.32V), when ordering products are clearly defined model. In addition to pre-calibration of the package outside the built-in crystal oscillator, M41T83 and M41T93 also using ST's low-cost space-saving 4mm x 4mm QFN16 package, and supporting the use of an external crystal oscillator. For the needs of mid-level real-time clock function of the low-end products and want the application of low cost, M41T83 product M41T82 Jane is a very good low-cost solutions. The product removed from the watchdog, square-wave signal generator and alarm reminder features, but retains the 400kHz I2C bus interface, analog user calibration, high precision voltage reference power control switch, battery monitor, 12 bytes of NVRAM and the reset output, a very small chip footprint low-cost 8-pin SOIC package.

Customized power management of mixed-signal IC

STMicroelectronics has introduced a whole set can be configured to contain and customizable analog functions of the mixed-signal IC, provides the best printers, fax machines and point-of-sale system solutions. New product called a structured framework bridge Regulators (SABRe), characterized by the development of low-cost, short listing, but also very high flexibility. SABRe solution configuration and customization will be easy to mock the concept of extended products, compared with ST for printers, scanners and other embedded control application development SPEAr (Structured Processor Enhanced Architecture) family of customizable digital engine used , the number of engines will become more obvious advantages, SPEAr and SABRe constitute a combination of full-custom printer platform. SABRe device integrates a large number of configurable and customizable features, including motor drives, voltage regulator, ADC, operational amplifiers and voltage comparators. Its flexibility enables customers to quickly adapt to adjust device SABRe the special needs of specific applications. Through the serial interface and / or general-purpose input and output may be some changes to the structure, while the use of macros to perform specific functions can be customized metal layers more complex functions. Harmful effect is caused by parasitic mixed-signal circuit of the main problems, because through the metal layer custom functions without modifying the active components of the chip, the new products will be the risk of harmful effects of parasitism dropped to a minimum. SABReIC primarily for the printer motors and power components of the development. Different from the existing motor drive and switching regulator, ST's products have a "host controller" function, in the digital IC to connect the power before the use of a special power-programmable routines, it can manage application-specific the entire power circuit. Because of their high flexibility, SABRe meet the industrial market for high-power, high-voltage analog products and electrical applications. SABReIC is one of the four main components of the bridge can be configured, the bridge can perform the following functions: multiple switching regulators or power charge, a variable step-down switching regulator, a switching regulator control , a linear regulator, a road more than nine configurable ADC, two operational amplifiers, a bi-directional serial interface and several general-purpose input and output.

China's exports plummet

The nation's spending on fixed assets such as roads, bridges and new plants grew 30.5 percent in the first four months from a year earlier. That compares with a 28.6 percent surge in the first quarter, the National Bureau of Statistics said Tuesday.
Meanwhile, exports dropped 22.6 percent from a year earlier to $91.94 billion in April, the Customs said Tuesday. This was steeper than March's 17.1 percent decline. Imports slumped 23 percent in April, compared with a 25.1 percent decline in March.
"We expect fixed asset investment to be the single most important contributor to China's GDP growth in 2009," Jing Ulrich, chairwoman of China Equities at JPMorgan said in Beijing yesterday. Ulrich reckoned that investment could account for 45 percent of China's economy this year, if it maintains a growth rate between 25 percent and 30 percent for the rest of the year.
Analysts said the recent recovery of the housing market was likely to lend more support to investment growth. Real estate investment, accounting for more than one third of the nation's fixed asset investment, grew 4.9 percent in the first four months of the year, up from 4.1 percent for the first quarter.
Meanwhile, the pickup in housing prices may also help fuel investment in the sector. According to the National Development and Reform Commission, average housing prices in the 70 major cities edged up 0.4 percent in April from a month earlier, although it represented a 1.1 percent drop from a year earlier.
Investment represented 42 percent of China's GDP, compared with consumption's 48 percent and net exports' 9 percent. Analysts have long criticized the economy's excessive reliance on investment and exports, which make it particularly vulnerable to economic fluctuation abroad.
"In the short run, the rise of government-led investment is necessary to stabilize the economy," Ulrich said. "But the money should not be spent on building new manufacturing capacity, given the prevalent capacity in some industries."
Investment related to the government stimulus package is expected to help cushion the impact of the drastic decline in foreign demand.
The nation's foreign trade sector provided more than 80 million job opportunities, the Ministry of Commerce said in a statement yesterday. It said the nation's foreign trade sector is still facing serious challenges, despite the government's moves to boost the sector.
The World Trade Organization estimated that global trade is likely to drop 9 percent in 2009, the steepest decline since World War II.
China's leading trade fair, the Canton Fair, concluded last Thursday with export orders down 17 percent, which analysts said was a sign of further weakness of the sector.

STM32 PerformanceStick

A very low price Microcontroller Development Kit STM32 PerformanceStick, this set of development tools are based on the recently launched ARM ® Cortex ™-M3 core of the STM32 family of microcontrollers supporting products. ST compact design of the development of this tool is user-friendly in order to understand the new microcontroller functionality and performance, in particular, it is worth mentioning that, the user can view through a graphical interface microcontroller under different conditions of performance characteristics. In order to encourage and help designers to modify and rewrite application source code, tool kit also contains sample applications and a complete Hitex software tools. STM32 PerformanceStick is a full-featured development tools, through a USB host-PC interface, developers can easily understand the new STM32 microcontroller's code execution speed, power consumption, low-power mode, such as performance and code density. This tool provides a graphical user interface-dash, in the run-time application, the user can modify the STM32 configuration, see the effect of the revised configuration, PerformanceStick another ST ARM core-based processor to display information in real time. STM32 PerformanceStick is a portal application development tools, through an I / O expansion board STM32 peripherals can be connected to conduct in-depth assessment of interface, including USB, CAN, USART and IrDA. The toolkit also includes a complete code size unlimited Hitex software tools, when the application is running on PerformanceStick, the user can modify the use of this tool, to rewrite application source code, set the STM32, debugging applications. Software tools used to create and re-including the creation of the Standard Edition applications Tasking C / C + + ARM compilers, as well as for code editing, equipment setup and debugging HiTOP5 application development environment. Sample application source code provided free of charge, users can in their own application software to use and modify these codes. STM32 PerformanceStick is the only show in accordance with the performance information directly to assess the concept of micro-controller development system designed to STM32. Although the price is extremely low, but this set of tools for designers to provide a complete solution and immediately run an ideal starting point for application development. PerformanceStick its STM32 microcontrollers including the disposal of up to 72 MHz frequency of the ARM Cortex ™-M3 core, 128KB Flash and 20KB RAM memory, can be directly inserted into a PC's USB host port, for programming and application debugging tasks. STM32 PerformanceStick order code is STM3210B-PFSTICK, the spot is currently available to order. This set of tools, including pre-programmed STM32 and USB connector and used for writing and debugging the application user or sample package (HiTop5 IDE, Tasking C / C + + ARM compilers). Suggested retail price of 59.00 U.S. dollars. PerformanceStick and associated I / O expansion board models is STM3210B-SK/HIT, the retail price of 109 U.S. dollars.

CPI declines,

The specter of deflation is fading even though consumer and producer prices have continued to fall, economists said Monday.
The Consumer Price Index (CPI), a key gauge of inflation, fell 1.5 percent in April from a year earlier, the third straight month of decline.
The index declined at a quicker pace in April, the National Bureau of Statistics said Monday. The drop was 1.2 percent in March.
The Producer Price Index (PPI), which monitors factory-gate price changes, slid for the fifth month, dropping 6.6 percent in April from a year earlier, compared with 6 percent in March.
"Although the indices continued to see negative growth in April, deflationary concerns appear to be subsiding as the economy shows signs of recovery," said Jing Ulrich, chairman of China equities at JPMorgan.
Analysts said the fall of the indices is not as worrisome as it appears because of their high reference point - sharp rises in the prices of food and raw materials last year and their subsequent fall in the early months of this year.
For example, pork prices plummeted 28.6 percent in April from a year earlier. And crude dropped 53.6 percent, despite a recent rally on global markets.
"As the economy continues to recover and credit growth continues to expand, consumer prices should show an uptrend in the second half of the year," Ulrich said.
Over the past months, there have been signs that the economy has bottomed out. Strong loan growth and the government's $586-billion stimulus package are expected to prop up investment and help offset the impact of shrinking exports, which have long been a growth engine.
Banks extended 591.9 billion yuan ($86.3 billion) in new loans in April, up 27.1 percent from a year earlier. That put new lending for the first four months at 5.17 trillion yuan, more than the figure for the whole of last year.
M2, or the broader measure of money supply, surged 25.95 percent by the end of April, compared with 17.82 percent for 2008.
Analysts say the lion's share of the loans went to government-backed infrastructure projects in the stimulus plan. That would help revive demand and stabilize the prices of industrial products in the coming months.
Meanwhile, there are few signs of deflationary expectation among consumers, as sales in housing and car markets have rebounded.
Frank Gong, chief economist at JP Morgan, said in an earlier interview that deflationary expectation was a major threat for economic recovery, as it would mean consumers delay spending.
Auto sales rose 24.97 percent in April to 1.15 million units, hitting a fresh record and making the country the world's largest auto market for the fourth consecutive month, the China Association of Automobile Manufacturers reported last week.
Housing sales also rebounded. Industry specialists say sales volume in Beijing, Shanghai and Shenzhen grew more than 100 percent in the first quarter from a year ago.
Sun Mingchun, an economist with Nomura International, said the government's stimulus measures and strong loan growth would push up PPI and that, in turn, would lead to a higher CPI. He expects China's CPI to rise 2.3 percent in the fourth quarter year on year.

High-accuracy digital temperature sensor

STMicroelectronics introduced a series of high-precision digital output temperature sensor. New series of products is particularly applicable to a broad range of low-power applications, electronic equipment, temperature measurement range from negative 55 degrees Celsius to 125 degrees Celsius is. This emphasis on cost-effective series of products can be directly STxx75 replacement and software compatible with industry-standard LM75, DS75 and TCN75A chip temperature sensor, but also improved the ST has been used for a number of existing cell phone inside the STLM20 Series analog temperature sensor. Standard 8-lead TSSOP and SO-8 package, the new series of digital sensor applied to device control applications, such as: processor through the I2C bus / SMBus read an accurate digital temperature data of the machine need to take action after the control applications; or when the local temperature of the system need to be taken when pre-set temperature alarm or interruption of the control measures applied. The adoption of a new series of products bandgap temperature sensor, a programmable built-in 9-12 of the sigma-delta ADC (ADC), are able to simulate the temperature reading signals into digital signals, resolution up to 0.0625 degrees. STTS75 is calibrated in the factory, no other external components. In negative 55 degrees Celsius to 125 degrees Celsius is within the scope of the sensor measurement accuracy plus or minus 3 degrees Celsius; in negative 25 degrees Celsius to 100 degrees Celsius is the scope, precision sensors plus or minus 2 degrees Celsius. Sensor is a new series of 2.7 to 5.5 V supply voltage伏低designed operating current consumption is very low, at 3.3V typical operating current of only 75 microamps. The turn-off in power mode, the standby current is very low, only 1 microampere maximum. The default setting power of the products can be used as an independent work of a thermostat, the temperature value and temperature regulation can be programmed hysteresis value. All hard disk drives with the device are the objectives of the new product applications, including desktop computers, servers and some set-top boxes, as well as medical equipment, industrial computer controller and LCD display backlighting. With more and more high-brightness display, the circuit faster and faster processing speed, heat-related devices have also increased, but these pieces of the package heat sink is continuously shrinking. This trend of development of consumer electronics and industrial electronic equipment thermal management system, a formidable challenge, only the strict monitoring of the temperature of integrated circuits and external ambient temperature, thereby preventing the circuit board overheating and equipment damage incidents. STTS75 series of sensors now in volume production, the use of SO-8 package and MSOP8 (TSSOP8), Order 1000 and above and is priced at 0.70 U.S. dollars. Sample for order.

China confirms 1st mainland H1N1 case

BEIJING -- A Chinese mainland male surnamed Bao, who recently returned from the United States, tested positive for the A(H1N1) influenza, China's ministry of health said Monday.
Media reporters gather outside the Chengdu Infectious Disease Hospital in Chengdu, Sichuan Province of China, on May 10, 2009. [Xinhua]
It was the first such case reported in the mainland. The 30-year-old patient was at the Chengdu Infectious Disease Hospital in Sichuan's provincial capital and those who had close contact with him were isolated for observation, the ministry said.
Bao took Northwest Airlines flight NW029 to Beijing on May 9, after making a transfer in Tokyo from St. Paul, Minnesota in the United States. He then flew from Beijing to Chengdu on Sichuan Airlines flight U8882 the same day.
Earlier reports said Bao developed a fever on the domestic flight, accompanied by a sore throat, coughing, nasal congestion and sneezing.
He went to the Sichuan People's Hospital after getting off the plane and was initially diagnosed as a suspected A(H1N1) influenza case based on his symptoms and laboratory tests. He was then transferred to the Chengdu Infectious Disease Hospital and is now "recovering."
According to health ministry spokesman Mao Qun'an, most of the passengers aboard the flight from Beijing to Chengdu with Bao had already been tracked down and isolated at local health institutions in 21 provinces, municipalities and autonomous regions.
The Sichuan health department also said Monday morning that more than 130 of the 150 passengers from the flight were in quarantine

MCU Products

ST's STM32 family of products added 28 products, from low-end market positioning of the 36-pin package to the targeted high-end market products ranging 144-pin package, STM32 microcontroller pins to the established order, peripheral and software compatibility and other characteristics of core technologies into the product line expansion. Equipped with the latest micro-controller 256 KB, 384 KB or 512 KB of embedded flash memory to store code and data to enable developers to add new features, improves the performance of existing product platforms. 72MHz Enhanced STM32 product family of embedded SRAM capacity of up to 64KB, 36MHz basic SRAM family of products is increased to 48KB. The STM32 family of basic purpose is to encourage the designers from the constraints of the application of cost or 16 out of the design, using 32-bit microcontrollers. In higher with 256KB flash memory and micro-controller to increase the interface of the embedded peripherals, including a flexible static memory controller (FSMC), its support for NOR flash, NAND flash memory, SRAM, and CompactFlash memory. The FSMC also supports Intel 8080 and Motorola 6800 LCD controller board parallel port mode. STM32 microcontrollers for mobile storage devices to provide a main interface, support for SD (Secure Digital), SDIO (Secure Digital Input / Output) and MMC (multimedia card) and so on, in line with the MultiMediaCard System Specification 4.42 for 48MHz 8-bit data transfer rate requirements . In addition, STM32 also added a new product to support the master-slave mode and sampling frequency of 8KHz ~ 48KHz the I2S interface, and a dual-channel 12-bit Digital to Analog (DAC) and an enhanced debugging features for embedded tracking unit (ETM). In addition to other standard peripherals, also has five UART / USART interfaces, three SPI and two I2C interface bus interface. New peripheral interfaces makes the STM32 family of products to meet the market's high-performance connectivity and the demand for more control. STM32 new products LQFP64, LQFP100/BGA100 and LQFP144/BGA144 package. 32KB or 64KB for flash memory with low storage density of micro-controller, ST also introduced a new product a QFN36 package, 6 x 6mm package STM32 product family is the smallest size for the search for low-cost generic hardware strategy to seize market opportunities more than the developers, the new products will help enhance the scalability of the platform. Equipped with 256KB to 512KB on-chip flash memory, high-performance series of new products STM32 microcontroller also add a PWM timer, can provide with two dead and seven control timer output; using the largest package, the two PWM timer with up to four standard 16-bit timer, can support up to 28 have a PWM signal. As a result of a new 12-bit Analog to Digital Converters (ADC), STM32 new products can provide up to 21 triple road ADC sample-and-hold, these features enable the STM32 dual motor control functions, such as the need for air conditioners and four-wheel drive applications, able to drive two 3-phase brushless motor. Enhanced Series microcontrollers provide all the USB port and CAN bus interface. At present, the enhanced STM32 series and basic series product line A total of 46. STM32 environment allows developers to develop a standard in the development and application of core, full use of eco-industrial chain of many software and development tools. ST support tools, including the latest new products, evaluation boards, software and firmware libraries, and a variety of compatible third-party development tools. QFN36 package, the latest microcontroller ST32 have been put into mass production, with more than 256KB and Flash Microcontroller current stage of testing samples
more datasheet of component :http://www.data-sheet.org

Image signal processor

STMicroelectronics introduced a new stand-alone high-performance image signal processor, the new products to support mobile phones with built-dual-camera, so that cell phones with digital cameras taking pictures at the same level of performance. ST the latest digital video processor can control the integrity of the cell phone video subsystem supports a wide range of camera modules, including the resolution of up to 500 million pixels SMIA (standard mobile imaging architecture) compatible sensors. STv0986 mobile phone to achieve full-featured image processor of the image chain (from noise reduction to smooth digital zoom), and integrated compression factor quantization tables and programmable hardware JPEG encoder. Because the use of advanced processing algorithms, STv0986 able to show excellent image quality. The new image processor to support the image the direction of effects, such as: Image reflection, vertical or horizontal flip and arbitrary rotation angle, color processing functions, including old brown-and black-and-white photos of two models. 300 (500) million resolution, STv0986 per second up to 20 (12.5) Qizhen rate continuous video streaming, high-speed shooting mode, Anti-shake mode of the best photography and pre-shoot mode has become very easy to achieve. Pre-shoot mode, the camera will automatically take pictures before and after pressing the shutter, the photographer can shoot pictures in a row to choose their own favorite works. STv0986 unique dual video processing pipeline architecture to solve the problem of shutter delay to ensure that the effect of static images taken with the viewfinder screen window in exactly the same - WYSIWYG. The dual-pipeline architecture also provides a true full-frame mode of transmission of the camera to ensure that the local viewfinder image by 4 times and through the smooth digital true zoom (optional) of the images simultaneously. As a result of the advanced auto-focusing (AF) control loop, STv0986 the camera auto-focus camera and very fast, only 0.6 seconds. AF system to control various actuator technologies such as voice coil motors, piezoelectric actuators and stepper motors. Automatic sense control (auto-ISO control) and best combination of picture identification STv0986 function to provide a stable picture. ST for LED or Xenon flash solutions provide a complete system support. In addition to the phone apart, STv0986 also apply to PDA, handheld game consoles, electronic security systems and video phones eyes. ST will STv0986 and supporting the use of the camera module, you can design a complete mobile imaging system. ST of this VB6851 and VS6555 with the latest image processor can constitute a two-camera configuration. VB6851 is a level QXGA auto-focus camera modules, SMIA compatible with standard-definition and the module size (8.5x8.5x5.9mm) leader in the level of similar products; and VS6555 is a VGA-level camera module, the lens is optimized specifically for video conferencing design, low power consumption

8-pixel high-integration single-chip RGB LED driver drives

A drive current up to 80mA constant current output of 24 Road, RGB LED drive device STP24DP05. 7 x 7mm in a TQFP48 package of new products, the effectiveness of the equivalent of three 8-channel output common drive. By the composition of many high-brightness LED video displays and billboards, the use of STP24DP05 driven output channel less than the traditional material cost-saving device. New products can effectively reduce the pixel pitch and LED lights group spacing, thereby increasing the resolution of the display. The main target applications include outdoor and indoor full-color RGB video display panels, LED advertisement billboards, graphic information panels, traffic lights and all kinds of color information signs. STP24DP05 support 25MHz operation, to take serial input, parallel output FIFO (FIFO) driver circuit, the high-speed serial data rate reduction will help improve the image of the response speed. Each color group of eight output using an external resistor, this resistor can be in the range of 5-80mA channels regulate the driving of each LED current can be optimized

independent red, green and blue channels of the greatest brightness. Apart from the outstanding features of the drive, 48-pin TQFP48 package with high-performance thermal pad, the features can improve the flux-per-watt and system reliability. STP24DP05 also integrates an internal fault detection capabilities, can detect a short grounding line, the power shorted or open circuit fault. Through a dedicated pin on a chip can control the fault detection mode, or through the SPI port, the use of special keys can also control the number of fault detection mode. Without adding any additional pin, only to use the same SPI port, the fault code can be derived chips. The characteristics of a system diagnostic features, such as maintenance coordinator to direct the police to effectively reduce system downtime. STP24DP05 also integrated thermal shutdown protection function, the use of a sign-off pin state transmission products. BCD6 using ST's STP24DP05 process, the rated operating temperature range of -40 ℃ to +125 ℃, compatible with 3.3V and 5V data levels, and increased the main controller with a wide range of interoperability, such as 8-bit microcontroller ST7FLITE .

Hard Drive Physical Layer interface IP modules

First to support the new 6Gb / s SATA (Serial Advanced Technology Attachment) hard drives to connect standard MIPHY (physical layer multi-standard interface) Physical Layer interface. Physical layer macrocell from and sent to the hard drive of data reconciliation in the implementation of high-speed serial serial conversion functions, and to provide a data link layer for connecting the 20-bit wide parallel interface. SATA is the most popular hard disk drive (HDD) interface, SATA International Organization (SATA-IO), held in San Francisco Intel Developer Forum (IDF) published a new interface standard, the new standards, the maximum data transfer rate from 3Gb / s to 6Gb / s, ST displayed at the same time new products. ST's 6Gb / s SATA PHY is an IP (intellectual assets) modules, together with other functional modules into low-power 1.5Gb / s, 3Gb / s and 6Gb / s SATA hard disk drive system-on-chip (SoC) on. ST display module contains the SATA physical layer physical layer serial interface, using 65nm CMOS process. The leadership of a well-known hard drive manufacturers in the second half of this year's new products using the technology. "With consumers more and more hard disk storage of music, video and photographs, and other multimedia files, they need a faster hard drive data transfer rate," ST Data Storage Products Division, said Vittorio Peduto, General Manager, "ST and SATA International organization has maintained close cooperative relations, so that we can guarantee for the first time the hard disk manufacturers provide certification authority solution. " ST's 65nm MIPHY IP module in the previous generation based on 90nm technology has made great leaps and bounds. MIPHY new modules to the hard drive manufacturers to bring greater economic value of new products to reduce die size by 35%, 30% lower power consumption. In a balanced circuit and the transceiver circuit, the structure after further improved markedly enhanced anti-jitter performance, send reduced-jitter phenomenon. These advantages for the mobile hard disk drive market and cost-sensitive PC desktop hard drive market is particularly important, because in these two systems on the market makers in particular need to provide high-performance low-power products to differentiate it from its competitors.

About a motor drive to improve the effectiveness of the transistor

A 250A surface-mount power MOSFET transistors, this product has a market, the lowest on-resistance can be reduced to the minimum power conversion loss, and improve system performance. STV250N55F3 new products is the market's first integrated STPowerSO-10 ™ package and the lead solder with wedge bonding power MOSFET, no bare-chip packaging with low resistance. ST's new products STripFET III ™ high-density process, the typical on-resistance of only 1.5 cents in Europe. More STripFET III benefits include: lower switching loss, anti-avalanche performance. In addition to improving thermal efficiency, nine lines connecting source configuration also help to reduce resistance. At 25 ℃, rated power package for the 300W. New high-rated current so that engineers can design a number of parallel MOSFET, to achieve savings in board space and materials costs. Standard pressure-driven threshold also helps to simplify the driving circuit design. STV250N55F3 applied to the electrical equipment of up to 55V. 175 ℃ up to operating temperature so that the current strong STV250N55F3 for electric traction equipment, such as forklifts, golf cars and electric pallet truck loading and unloading as well as the mower, electric wheelchairs and electric bicycles. New products and finished in the wafer stage are 100% avalanche tested for reliability and against wear and provide a strong protection. New products will soon be automotive-grade products to meet quality standards. Products in the same series, ST was also a model for the 55V STV200N55F3 products, the product of the rated continuous drain current of 200A, the source is configured to 4-wire connection. Samples instantly STV250N55F3 sale is expected to mass production of the third quarter of 2008.

ST Microcontrollers STM32 exclusive launch of advanced motor control algorithms

STMicroelectronics expanded 32-bit STM32 microcontroller (MCU) to support vector control of motor functions, added support for sensorless control of a single bypass, internal permanent magnet (IPM) control and permanent magnet synchronous motor (PMSM) motor weak magnetic control algorithms. At present, there are about 40 kinds of motor control applications using STMicroelectronics Cortex-M3 based on the STM32 microcontroller. The new control features were added to the function STM32 Motor Control Library Version 2.0, in a new generation of appliances, industrial drives, pumps, heating ventilation and air conditioning (HVAC) systems, vending machines, cash registers and electrical applications such as cars and motorcycles the field, the new algorithm will help accelerate time to market, reduce material costs, and optimize the motor selection, breaking the run limit. At the same time, STMicroelectronics, through increasing the Keil, IAR and Green Hills tool vendor support for STM32 design environments, and expand the customer through a third party tool chain to use motor control function of the channel. STMicroelectronics customers free of charge in accordance with the provision of STM32 Motor Control Library Version 2.0, this algorithm can be directly based on the STM32 Motor Control STM3210B-MCKIT application of assessment tools and development hardware kit used. Currently available in the design of the new algorithm, the single-bypass current sensing support only need a current sensing resistors, resistor than the needs of three general mechanism sensorless control system cost savings. Single bypass current sensing is STMicroelectronics to develop a patented technology, with high utilization of DC bus voltage and current distortion in small and low audible noise. By adding a "maximize the torque current ratio" (MTPA) control algorithm, extended to the design of libraries to provide greater freedom of design space, enabling them to flexibly define IPM brushless motor electrical parameters to meet the practical application of of the high power density motors and high-speed performance requirements. STMicroelectronics also added stator-voltage closed-loop weak magnetic control algorithm, to reduce micro-controller to motor parameter and environmental changes of the sensitivity of all types of PMSM motors expanded the scope of work. In addition, high-speed operation of a weak magnetic environment, feed-forward control bus voltage ripple can be amended to improve the rectifier performance. From mid-October, STMicroelectronics will be provided in accordance with the needs of customers can speed up the development of a time-and labor-saving rate of the code generation tool. Based on these new algorithms, developers can take full advantage of rich STM32 motor control peripherals, including two three-phase STM32 integrated PWM timer, so that a micro-controller can control two brushless motor. By breaking a microcontroller to control a motor rules, designers can use the STM32 to save cost, reduce design size and power, and will not have any impact on performance. Integrated microcontroller ADC can support three high-precision motor drive used in the current sample-and-hold three-way catch. Because of the STM32 advanced ARM Cortex-M3 CPU industry-standard architecture, the STM32 users in the development of motor control solutions than the use of proprietary business structure to save time. STM32 MCU has two product lines: 72MHz clock frequency and the enhanced series of the basic clock frequency of 36MHz series. STMicroelectronics will be the ultimate integration of these two series of 16KB to 512KB of flash memory, providing 36-pin QFN to 144-pin LQFP or BGA package.

ST Microcontrollers STM32 exclusive launch of advanced motor control algorithms

STMicroelectronics expanded 32-bit STM32 microcontroller (MCU) to support vector control of motor functions, added support for sensorless control of a single bypass, internal permanent magnet (IPM) control and permanent magnet synchronous motor (PMSM) motor weak magnetic control algorithms. At present, there are about 40 kinds of motor control applications using STMicroelectronics Cortex-M3 based on the STM32 microcontroller. The new control features were added to the function STM32 Motor Control Library Version 2.0, in a new generation of appliances, industrial drives, pumps, heating ventilation and air conditioning (HVAC) systems, vending machines, cash registers and electrical applications such as cars and motorcycles the field, the new algorithm will help accelerate time to market, reduce material costs, and optimize the motor selection, breaking the run limit. At the same time, STMicroelectronics, through increasing the Keil, IAR and Green Hills tool vendor support for STM32 design environments, and expand the customer through a third party tool chain to use motor control function of the channel. STMicroelectronics in accordance with the needs of customers free of charge STM32 Motor Control Library Version 2.0, this algorithm can be directly based on the STM32 Motor Control STM3210B-MCKIT application of assessment tools and development hardware kit used. Currently available in the design of the new algorithm, the single-bypass support current sensors only need a current sensing resistors, resistor than the needs of three general mechanism sensorless control system cost savings. Single bypass current sensing is STMicroelectronics to develop a patented technology, with high utilization of DC bus voltage and current distortion in small and low audible noise. By adding a "maximize the torque current ratio" (MTPA) control algorithm, extended to the design of libraries to provide greater freedom of design space, enabling them to flexibly define IPM brushless motor electrical parameters to meet the practical application of of the high power density motors and high-speed performance requirements. STMicroelectronics also added stator-voltage closed-loop weak magnetic control algorithm, to reduce micro-controller to motor parameter and environmental changes of the sensitivity of all types of PMSM motors expanded the scope of work. In addition, high-speed operation of a weak magnetic environment, feed-forward control bus voltage ripple can be amended to improve the rectifier performance. From mid-October, STMicroelectronics will be provided in accordance with the needs of customers can speed up the development of a time-and labor-saving rate of the code generation tool. Based on these new algorithms, developers can take full advantage of rich STM32 motor control peripherals, including two three-phase STM32 integrated PWM timer, so that a micro-controller can control two brushless motor. Through a micro-controller to break an electrical rules, designers can use the STM32 to save cost, reduce design size and power, and will not have any impact on performance. Integrated microcontroller ADC can support three high-precision motor drive used in the current sample-and-hold three-way catch. Because of the STM32 advanced ARM Cortex-M3 CPU industry-standard architecture, the STM32 users in the development of motor control solutions than the use of proprietary business structure to save time. STM32 MCU has two product lines: 72MHz clock frequency and the enhanced series of the basic clock frequency of 36MHz series. STMicroelectronics will be the ultimate integration of these two series of 16KB to 512KB of flash memory, providing 36-pin QFN to 144-pin LQFP or BGA package.

LM285Z-1.2 PDF Datasheet

The LM285/LM385 series are micropower two–terminal bandgap voltageregulator diodes. Designed to operate over a wide current range of 10 mA to20 mA, these devices feature exceptionally low dynamic impedance, lownoise and stable operation over time and temperature. Tight voltagetolerances are achieved by on–chip trimming. The large dynamic operatingrange enables these devices to be used in applications with widely varyingsupplies with excellent regulation. Extremely low operating current makethese devices ideal for micropower circuitry like portable instrumentation,regulators and other analog circuitry where extended battery life is required.The LM285/LM385 series are packaged in a low cost TO–226AA plasticcase and are available in two voltage versions of 1.235 and 2.500 V asdenoted by the device suffix (see Ordering Information table). The LM285 isspecified over a –40°C to +85°C temperature range while the LM385 is ratedfrom 0°C to +70°C.The LM385 is also available in a surface mount plastic package involtages of 1.235 and 2.500 V.• Operating Current from 10 mA to 20 mA• 1.0%, 1.5%, 2.0% and 3.0% Initial Tolerance Grades• Low Temperature Coefficient• 1.0 W Dynamic Impedance• Surface Mount Package Available