AT89S405124PU ATMEL Corporation, AT89S405124PU Datasheet

AT89S405124PU

Manufacturer Part Number

AT89S405124PU

Description

DIP20

Manufacturer

ATMEL Corporation

Datasheet

1.AT89S405124PU.pdf (45 pages)

Specifications of AT89S405124PU

Date_code

09+

Current page: 1 of 45
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Features

•

1. Description

The AT89S2051/S4051 is a low-voltage, high-performance CMOS 8-bit microcontrol-

ler with 2K/4K bytes of In-System Programmable (ISP) Flash program memory. 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 AT89S2051/S4051 is a

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

many embedded control applications. Moreover, the AT89S2051/S4051 is designed

to be function compatible with the AT89C2051/C4051 devices, respectively.

The AT89S2051/S4051 provides the following standard features: 2K/4K bytes of

Flash, 256 bytes of RAM, 15 I/O lines, two 16-bit timer/counters, a six-vector, four-

level interrupt architecture, a full duplex enhanced serial port, a precision analog

comparator, on-chip and clock circuitry. Hardware support for PWM with 8-bit resolu-

tion and 8-bit prescaler is available by reconfiguring the two on-chip timer/counters. In

addition, the AT89S2051/S4051 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 disabling all other chip functions until the next external interrupt or

hardware reset.

Compatible with MCS

2K/4K Bytes of In-System Programmable (ISP) Flash Program Memory

2.7V to 5.5V Operating Range

Fully Static Operation: 0 Hz to 24 MHz

Two-level Program Memory Lock

256 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 with Selectable Interrupt

8-bit PWM (Pulse-width Modulation)

Low Power Idle and Power-down Modes

Brownout Reset

Enhanced UART Serial Port with Framing Error Detection and Automatic

Address Recognition

Internal Power-on Reset

Interrupt Recovery from Power-down Mode

Programmable and Fuseable x2 Clock Option

Four-level Enhanced Interrupt Controller

Power-off Flag

Flexible Programming (Byte and Page Modes)

User Serviceable Signature Page (32 Bytes)

– Serial Interface for Program Downloading

– Endurance: 10,000 Write/Erase Cycles

– Page Mode: 32 Bytes/Page

51 Products

8-bit

Microcontroller

with 2K/4K

Bytes Flash

AT89S2051

AT89S4051

Preliminary

3390C–MICRO–7/05

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