AT89S8253-24AU

ATMEL  AT89S8253-24AU  微控制器, 8位, 高性能 CMOS, AT89S8253, 24 MHz, 12 KB, 256 Byte, 44 引脚, TQFP

The is a 8-bit low-power high-performance CMOS Microcontroller with 12kB of In-System Programmable ISP flash program memory and 2kB of EEPROM data memory. The device is manufactured using Atmel"s high-density non-volatile memory technology and is compatible with the industry-standard MCS-51 instruction set and pinout. The on-chip downloadable flash allows the program memory to be reprogrammed in-system through an SPI serial interface or by a conventional non-volatile memory programmer. By combining a versatile 8-bit CPU with downloadable flash on a monolithic chip, the Atmel AT89S8253 is a powerful microcontroller which provides a highly-flexible and cost-effective solution to many embedded control applications.

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Compatible with MCS®-51 products

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12kB of In-System Programmable ISP flash program memory

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2kB EEPROM data memory

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64-byte User signature array

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Three-level program memory lock

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256 x 8-bit Internal RAM

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32 Programmable I/O lines

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Three 16-bit timers/counters

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Nine interrupt sources

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Enhanced UART serial port with framing error detection and automatic address recognition

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Enhanced SPI double write/read buffered serial interface

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Low-power idle and power-down modes

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Interrupt recovery from power-down mode

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Programmable watchdog timer

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Dual data pointer

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Power-off flag

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Flexible ISP programming byte and page mode

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Four-level enhanced interrupt controller

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Programmable and fuse-able x2 clock option

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Internal power-on reset