AT89S8253-24PU Datasheet PDF - ATMEL

●The AT89S8253-24PU 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.

● 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