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ST9040 bảng dữ liệu(PDF) 5 Page - STMicroelectronics |
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ST9040 bảng dữ liệu(HTML) 5 Page - STMicroelectronics |
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5 / 56 page  1.1GENERAL DESCRIPTION The ST9040 is a ROM member of the ST9 family of microcontrollers, completely developed and pro- duced by SGS-THOMSON Microelectronics using a proprietary n-well HCMOS process. The ST9040 peripheral and functional actions are fully compatible throughout the ST903x/4x family. This datasheet will thus provide only information specific to this ROM device. THE READER IS ASKED TO REFER TO THE DATASHEET OF THE ST9036 ROM-BASED DE- VICE FOR FURTHER DETAILS. The nucleus of the ST9040 is the advanced Core which includes the Central Processing Unit (CPU), the Register File, a 16 bit Timer/Watchdog with 8 bit Prescaler, a Serial Peripheral Interface support- ing S-bus, I 2C-bus and IM-bus Interface,plus two 8 bit I/O ports. The Core has independent memory and register buses allowing a high degree of pipe- lining to add to the efficiency of the code execution speed of the extensive instruction set. The power- ful I/O capabilities demanded by microcontroller applications are fulfilled by the ST9040 with up to 56 I/O lines dedicated to digital Input/Output. These lines are grouped into up to seven 8 bit I/O Ports and can be configured on a bit basis under software control to provide timing, status signals, an address/data bus for interfacing external mem- ory, timer inputs and outputs, analog inputs, exter- nal interrupts and serial or parallel I/O with or without handshake. Three basic memory spaces are available to support this wide range of configurations: Program Memory (internal and external), Data Memory (internal and ex- ternal)andtheRegisterFile, which includesthecontrol and status registers of theon-chip peripherals. Two 16 bit MultiFunction Timers, each with an 8 bit Prescaler and 13 operating modes allow simple use for complex waveform generation and meas- urement, PWM functions and many other system timing functionsby the usage of the two associated DMA channels for each timer. In addition there is an 8 channel Analog to Digital Converter with inte- gral sample and hold, fast 11 µs conversion time and 8 bit resolution. An Analog Watchdog feature is included for two input channels. Completing the device is a full duplex Serial Com- munications Interface with an integral 110 to 375,000 baud rate generator, asynchronous and 1.5Mbyte/s synchronous capability (fully program- mable format) and associated address/wake-up option, plus two DMA channels. ® ST9040 5/56 |
Số phần tương tự - ST9040 |
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Mô tả tương tự - ST9040 |
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