AT89C55-16AA ATMEL [ATMEL Corporation], AT89C55-16AA Datasheet

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AT89C55-16AA

Manufacturer Part Number

AT89C55-16AA

Description

8-Bit Microcontroller with 20K Bytes Flash

Manufacturer

ATMEL [ATMEL Corporation]

Datasheet

1.AT89C55-16AA.pdf (24 pages)

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Features

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Description

The AT89C55 is a low-power, high-performance CMOS 8-bit microcomputer with 20K

bytes of Flash programmable and erasable read only memory. The device is manu-

factured using Atmel’s high density nonvolatile memory technology and is compatible

with the industry standard 80C51 instruction set and pinout. The on-chip Flash allows

the program memory to be reprogrammed in-system or by a conventional nonvolatile

memory programmer. By combining a versatile 8-bit CPU with Flash on a monolithic

chip, the Atmel AT89C55 is a powerful microcomputer which provides a highly flexible

and cost effective solution to many embedded control applications.

Pin Configurations

Compatible with MCS-51™ Products

20K Bytes of In-System Reprogrammable Flash Memory

Fully Static Operation: 0 Hz to 33 MHz

Three-Level Program Memory Lock

256 x 8-bit Internal RAM

32 Programmable I/O Lines

Three 16-bit Timer/Counters

Eight Interrupt Sources

Low Power Idle and Power Down Modes

– Endurance: 1,000 Write/Erase Cycles

PQFP/TQFP

PLCC

PDIP

(continued)

8-Bit

Microcontroller

with 20K Bytes

Flash

AT89C55

0580D-A–12/97

4-169

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