Datasheet > 微控制器和处理器 > 微控制器> AT89S4051-24PI

AT89S4051-24PI

更新时间： 2024-10-01 22:26:15

品牌	Logo	应用领域
爱特美尔 - ATMEL		闪存微控制器
页数	文件大小	规格书
45页	983K
描述
8-bit Microcontroller with 2K/4K Bytes Flash

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数据手册

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AT89S4051-24PI 数据手册

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

• Two-level Program Memory Lock

• 256 x 8-bit Internal RAM

8-bit

• 15 Programmable I/O Lines

• Two 16-bit Timer/Counters

Microcontroller

with 2K/4K

Bytes Flash

• 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

AT89S2051

AT89S4051

• 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

Preliminary

• Flexible Programming (Byte and Page Modes)

– Page Mode: 32 Bytes/Page

• User Serviceable Signature Page (32 Bytes)

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.

3390C–MICRO–7/05

12 3 4 5 6 7...45

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