AT89S8253 Datasheet PDF

●The AT89S8253-24JU 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 nonvolatile 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 nonvolatile 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.

● Three-level program memory lock

● 32 Programmable I/O lines

● Three 16-bit timer/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

● Four-level enhanced interrupt controller

● Internal power-on reset

● Compatible with MCS®51 products

● 0 to 24MHz (in x1 and x2 modes) Fully static operation