AT89C55WD Datasheet PDF - ATMEL

●Description

●The AT89C55WD is a low-power, high-performance CMOS 8-bit microcontroller with 20K bytes of Flash programmable read only memory and 256 bytes of RAM. The device is manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the industry standard 80C51 and 80C52 instruction set and pinout. The on-chip Flash allows the program memory to be user programmed by a conventional nonvolatile memory programmer. By combining a versatile 8-bit CPU with Flash on a monolithic chip, the Atmel AT89C55WD is a powerful microcomputer which provides a highly flexible and cost effective solution to many embedded control applications.

●Features

●• Compatible with MCS®-51 Products

●• 20K Bytes of Reprogrammable Flash Memory

●• Endurance: 1000 Write/Erase Cycles

●• 4V to 5.5V Operating Range

●• FullyStaticOperation:0Hzto33MHz

●• Three-level Program Memory Lock

●• 256 x 8-bit Internal RAM

●• 32 Programmable I/O Lines

●• Three 16-bit Timer/Counters

●• Eight Interrupt Sources

●• Programmable Serial Channel

●• Low-power Idle and Power-down Modes

●• Interrupt Recovery from Power-down Mode

●• Hardware Watchdog Timer

●• Dual Data Pointer

●• Power-off Flag