Microcontroller

The AT89S8253 is a low-power, high-performance CMOS 8-bit microcontroller with12K bytes of In-System Programmable (ISP) Flash program memory notice and 2K bytes of EEPROM selective information memory. The device is manufactured using Atmels high-density non-volatile memory engineering science and is compatible with the industry-standard MCS-51 instruction bent grass and pinout. The on-chip downloadable Flash everyows the program memory to be reprogrammed in- establishment through with(predicate) an SPI nonparallel interface or by a conventional nonvolatile memory programmer. By trust a versatile 8-bit primeval processing unit with downloadable Flash on a monolithic chip, the Atmel AT89S8253 is a powerful microcontroller which provides a highly-flexible and cost-effective response to many embedded control applications. The AT89S8253 provides the following standard features: 12K bytes of In-System Programmable Flash, 2K bytes of EEPROM, 256 bytes of RAM, 32 I/O lines, progra mmable watchdog horologe, two data pointers, triad 16-bit timer/counters, a six-vector, four-level interrupt architecture, a full duplex in series(p) port, on-chip oscillator, and clock circuitry. In addition, the AT89S8253 is designed with static logical musical arrangement for operation down to zero frequency and supports two software package system selectable power saving modes.

The Idle Mode wampum the CPU while allowing the RAM, timer/counters, serial port, and interrupt system to pass on functioning. The Power-down mode saves the RAM contents however freezes the oscillator, disabling all other chip functions un til the next outer interrupt or hardware re! set. The on-board Flash/EEPROM is accessible through the SPI serial interface. retention RESET active forces the SPI bus into a serial programme interface and allows the program memory to be written to or read from, unless one or to a greater extent lock bits open been activated. 1.1.3PIN DESCRIPTION: 1.1.3.1 VCC Supply voltage (all packages relegate 42-PDIP). 1.1.3.2 GND Ground (all packages except 42-PDIP; for 42-PDIP GND connects only the logic core and the embedded...If you indirect request to get a full essay, order it on our website: OrderCustomPaper.com

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