AT89C405124SU ATMEL Corporation, AT89C405124SU Datasheet

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AT89C405124SU

Manufacturer Part Number

AT89C405124SU

Description

SOP20

Manufacturer

ATMEL Corporation

Datasheet

1.AT89C405124PI.pdf (19 pages)

Specifications of AT89C405124SU

Date_code

07+

Current page: 1 of 19
Download datasheet (335Kb)

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1. Description

The AT89C4051 is a low-voltage, high-performance CMOS 8-bit microcontroller with

4K bytes of Flash programmable and erasable read-only memory. The device is man-

ufactured using Atmel’s high-density nonvolatile memory technology and is

compatible with the industry-standard MCS-51 instruction set. By combining a versa-

tile 8-bit CPU with Flash on a monolithic chip, the Atmel AT89C4051 is a powerful

microcontroller which provides a highly-flexible and cost-effective solution to many

embedded control applications.

The AT89C4051 provides the following standard features: 4K bytes of Flash,

128 bytes of RAM, 15 I/O lines, two 16-bit timer/counters, a five-vector, two-level inter-

rupt architecture, a full duplex serial port, a precision analog comparator, on-chip

oscillator and clock circuitry. In addition, the AT89C4051 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 continue functioning. The power-down mode saves

the RAM contents but freezes the oscillator disabling all other chip functions until the

next hardware reset.

Compatible with MCS

4K Bytes of Reprogrammable Flash Memory

2.7V to 6V Operating Range

Fully Static Operation: 0 Hz to 24 MHz

Two-level Program Memory Lock

128 x 8-bit Internal RAM

15 Programmable I/O Lines

Two 16-bit Timer/Counters

Six Interrupt Sources

Programmable Serial UART Channel

Direct LED Drive Outputs

On-chip Analog Comparator

Low-power Idle and Power-down Modes

Brown-out Detection

Power-On Reset (POR)

Green (Pb/Halide-free/RoHS Compliant) Packaging

– Endurance: 1,000 Write/Erase Cycles

®

51 Products

8-bit

Microcontroller

with 4K Bytes

Flash

AT89C4051

1001E–MICRO–6/05

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