Datasheet > AT89S53_00

AT89S53_00

更新时间： 2024-10-03 04:33:15

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
33页	449K
描述
8-bit Microcontroller with 12K Bytes Flash

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中文翻译

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数据手册

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AT89S53_00 数据手册

Features

• Compatible with MCS-51^™Products

• 12K Bytes of In-System Reprogrammable Downloadable Flash Memory

– SPI Serial Interface for Program Downloading

– Endurance: 1,000 Write/Erase Cycles

• 4V to 6V Operating Range

• Fully Static Operation: 0 Hz to 24 MHz

• Three-level Program Memory Lock

• 256 x 8-bit Internal RAM

• 32 Programmable I/O Lines

• Three 16-bit Timer/Counters

8-bit

• Nine Interrupt Sources

• Programmable UART Serial Channel

• SPI Serial Interface

• Low-power Idle and Power-down Modes

• Interrupt Recovery From Power-down

• Programmable Watchdog Timer

• Dual Data Pointer

Microcontroller

with 12K Bytes

Flash

• Power-off Flag

Description

AT89S53

The AT89S53 is a low-power, high-performance CMOS 8-bit microcomputer with 12K

bytes of downloadable Flash programmable and erasable read only memory. The

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

and is compatible with the industry-standard 80C51 instruction set and pinout. The on-

chip downloadable Flash allows the program memory to be reprogrammed in-system

through an SPI serial interface or by a conventional nonvolatile memory programmer.

By combining a versatile 8-bit CPU with downloadable Flash on a monolithic chip, the

Atmel AT89S53 is a powerful microcomputer which provides a highly-flexible and

cost-effective solution to many embedded control applications.

The AT89S53 provides the following standard features: 12K bytes of downloadable

Flash, 256 bytes of RAM, 32 I/O lines, programmable watchdog timer, two Data Point-

ers, three 16-bit timer/counters, a six-vector two-level interrupt architecture, a full

duplex serial port, on-chip oscillator, and clock circuitry. In addition, the AT89S53 is

designed with static logic for operation down to zero frequency and supports two soft-

ware 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 interrupt or hardware reset.

The downloadable Flash can change a single byte at a time and is accessible through

the SPI serial interface. Holding RESET active forces the SPI bus into a serial pro-

gramming interface and allows the program memory to be written to or read from

unless Lock Bit 2 has been activated.

Rev. 0787D–06/00

12 3 4 5 6 7...33

中文翻译

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