Datasheet > AT89S8252

AT89S8252

更新时间： 2024-11-26 22:26:19

品牌	Logo	应用领域
爱特美尔 - ATMEL		微控制器
页数	文件大小	规格书
31页	457K
描述
8-Bit Microcontroller with 8K Bytes Flash

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中文翻译

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数据手册

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AT89S8252 数据手册

Features

• Compatible with MCS-51™ Products

• 8K Bytes of In-System Reprogrammable Downloadable Flash Memory

– SPI Serial Interface for Program Downloading

– Endurance: 1,000 Write/Erase Cycles

• 2K Bytes EEPROM

– Endurance: 100,000 Write/Erase Cycles

• 4.0V 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

Microcontroller

with 8K Bytes

Flash

• 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

• Power Off Flag

AT89S8252

Description

The AT89S8252 is a low-power, high-performance CMOS 8-bit microcomputer with

8K bytes of Downloadable Flash programmable and erasable read only memory and

2K bytes of EEPROM. The device is manufactured using Atmel’s high density nonvol-

atile memory technology and is compatible with the industry standard 80C51 instruc-

tion 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 non-

volatile memory programmer. By combining a versatile 8-bit CPU with Downloadable

Flash on a monolithic chip, the Atmel AT89S8252 is a powerful microcomputer which

provides a highly flexible and cost effective solution to many embedded control appli-

cations.

The AT89S8252 provides the following standard features: 8K bytes of Downloadable

Flash, 2K bytes of EEPROM, 256 bytes of RAM, 32 I/O lines, programmable watch-

dog timer, two Data Pointers, three 16-bit timer/counters, a six-vector two-level inter-

rupt architecture, a full duplex serial port, on-chip oscillator, and clock circuitry. In

addition, the AT89S8252 is designed with static logic for operation down to zero fre-

quency and supports two software selectable power saving modes. The Idle Mode

stops the CPU while allowing the RAM, timer/counters, serial port, and interrupt sys-

tem 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 hard-

ware reset.

The Downloadable Flash can be changed a single byte at a time and is accessible

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

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

unless Lock Bit 2 has been activated.

0401D-A–12/97

4-105

12 3 4 5 6 7...31

中文翻译

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与AT89S8252相关器件

型号	品牌	获取价格	描述	数据表
AT89S8252_02	ATMEL	获取价格	8-bit Microcontroller with 8K Bytes Flash
AT89S8252_06	ATMEL	获取价格	8-bit Microcontroller with 8K Bytes Flash
AT89S8252-12AC	ATMEL	获取价格	Microcontroller, 8-Bit, FLASH, 12MHz, CMOS, PQFP44, 1 MM HEIGHT, PLASTIC, TQFP-44
AT89S8252-12AI	ATMEL	获取价格	Microcontroller, 8-Bit, FLASH, 12MHz, CMOS, PQFP44, 1 MM HEIGHT, PLASTIC, TQFP-44
AT89S8252-12AJ	ATMEL	获取价格	Microcontroller, 8-Bit, FLASH, 12MHz, CMOS, PQFP44, 1 MM HEIGHT, PLASTIC, TQFP-44
AT89S8252-12AL	ATMEL	获取价格	Microcontroller, 8-Bit, FLASH, 12MHz, CMOS, PQFP44, 1 MM HEIGHT, PLASTIC, TQFP-44
AT89S8252-12JC	ATMEL	获取价格	Microcontroller, 8-Bit, FLASH, 12MHz, CMOS, PQCC44, PLASTIC, MS-047AC, LCC-44
AT89S8252-12JCT/R	ATMEL	获取价格	Microcontroller, 8-Bit, FLASH, 12MHz, CMOS, PQCC44, PLASTIC, MS-047AC, LCC-44
AT89S8252-12JI	ATMEL	获取价格	Microcontroller, 8-Bit, FLASH, 12MHz, CMOS, PQCC44, PLASTIC, MS-047AC, LCC-44
AT89S8252-12JIT/R	ATMEL	获取价格	Microcontroller, 8-Bit, FLASH, 12MHz, CMOS, PQCC44, PLASTIC, MS-047AC, LCC-44

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