AT89S2051_14 datasheet, PDF - EEWORLD Datasheet

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AT89S2051_14: Description2K/4K Bytes of In-System Programmable (ISP) Flash Program Memory; File Size909KB，46 Pages; ManufacturerAtmel (Microchip)

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AT89S2051_14 Overview

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

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Features

•

Compatible with MCS

51 Products

•

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

– Serial Interface for Program Downloading

– Endurance: 10,000 Write/Erase Cycles

2.7V to 5.5V Operating Range

Fully Static Operation: 0 Hz to 24 MHz (x1 and x2 Modes)

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)

– Page Mode: 32 Bytes/Page

User Serviceable Signature Page (32 Bytes)

•

8-bit

Microcontroller

with 2K/4K

Bytes Flash

AT89S2051

AT89S4051

1. Description

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

troller with 2K/4K bytes of In-System Programmable (ISP) Flash program memory.

The device is manufactured using Atmel’s high-density nonvolatile memory technol-

ogy 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.

3390E–MICRO–6/08

AT89S2051_14 Related Products

	AT89S2051_14	AT89S4051_14
Description	2K/4K Bytes of In-System Programmable (ISP) Flash Program Memory	2K/4K Bytes of In-System Programmable (ISP) Flash Program Memory

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