AT89S8253 Microcontroller - 24MHz - 8 Bit - 40 Pin

The AT89S8253 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. Features:- Compatible with MCS®-51 products 12kB of In-System Programmable (ISP) flash program memory 2kB EEPROM data memory 64-byte User signature array Three-level program memory lock 256 x 8-bit Internal RAM 32 Programmable I/O lines Three 16-bit timers/counters Nine interrupt sources Enhanced UART serial port with framing error detection and automatic address recognition Enhanced SPI (double write/read buffered) serial interface Low-power idle and power-down modes Interrupt recovery from power-down mode Programmable watchdog timer Dual data pointer Power-off flag Flexible ISP programming (byte and page mode) Four-level enhanced interrupt controller Programmable and fuse-able x2 clock option Internal power-on reset