AT89C1051-12PA ATMEL [ATMEL Corporation], AT89C1051-12PA Datasheet

AT89C1051-12PA

Manufacturer Part Number

AT89C1051-12PA

Description

8-Bit Microcontroller with 1K Byte Flash

Manufacturer

ATMEL [ATMEL Corporation]

Datasheet

1.AT89C1051-12PA.pdf (12 pages)

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Features

•

Description

The AT89C1051 is a low-voltage, high-performance CMOS 8-bit microcomputer with

1K byte of Flash programmable and erasable read only memory (PEROM). The

device is manufactured using Atmel’s high density nonvolatile memory technology

and is compatible with the industry standard MCS-51™ instruction set. By combining

a versatile 8-bit CPU with Flash on a monolithic chip, the Atmel AT89C1051 is a pow-

erful microcomputer which provides a highly flexible and cost effective solution to

many embedded control applications.

The AT89C1051 provides the following standard features: 1K Byte of Flash, 64 bytes

of RAM, 15 I/O lines, one 16-bit timer/counter, a three vector two-level interrupt archi-

tecture, a precision analog comparator, on-chip oscillator and clock circuitry. In addi-

tion, the AT89C1051 is designed with static logic for operation down to zero frequency

and supports two software selectable power saving modes. The Idle Mode stops the

CPU while allowing the RAM, timer/counters, serial port and interrupt system to con-

tinue functioning. The Power Down Mode saves the RAM contents but freezes the

oscillator disabling all other chip functions until the next hardware reset.

Pin Configuration

Compatible with MCS-51™ Products

1K Byte of Reprogrammable Flash Memory

2.7V to 6V Operating Range

Fully Static Operation: 0 Hz to 24 MHz

Two-Level Program Memory Lock

64 bytes SRAM

15 Programmable I/O Lines

One 16-Bit Timer/Counter

Three Interrupt Sources

Direct LED Drive Outputs

On-Chip Analog Comparator

Low Power Idle and Power Down Modes

– Endurance: 1,000 Write/Erase Cycles

PDIP/SOIC

8-Bit

Microcontroller

with 1K Byte

Flash

AT89C1051

0366D-A–12/97

4-3

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