AT89S8253-24AI

MCU 8Bit AT89 8051 CISC 12KB Flash 3.3V/5V 44Pin TQFP

Description

The AT89S8253 is a low-power, high-performance CMOS 8-bit microcontroller with 12K bytes of In-System Programmable ISP Flash program memory and 2K bytes 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.

Features

• Compatible with MCS®-51 Products

• 12K Bytes of In-System Programmable ISP Flash Program Memory

  – SPI Serial Interface for Program Downloading

  – Endurance: 10,000 Write/Erase Cycles

• 2K Bytes EEPROM Data Memory

  – Endurance: 100,000 Write/Erase Cycles

• 64-byte User Signature Array

• 2.7V to 5.5V Operating Range

• Fully Static Operation: 0 Hz to 24 MHz in x1 and x2 Modes

• Three-level Program Memory Lock

• 256 x 8-bit Internal RAM

• 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

• Flexible ISP Programming Byte and Page Modes

  – Page Mode: 64 Bytes/Page for Code Memory, 32 Bytes/Page for Data Memory

• Four-level Enhanced Interrupt Controller

• Programmable and Fuseable x2 Clock Option

• Internal Power-on Reset

• 42-pin PDIP Package Option for Reduced EMC Emission

• Green Pb/Halide-free Packaging Option