Datasheet > AT29C020-70TI

AT29C020-70TI

更新时间： 2024-09-21 03:51:43

品牌	Logo	应用领域
爱特美尔 - ATMEL		光电二极管
页数	文件大小	规格书
17页	420K
描述
Flash, 256KX8, 70ns, PDSO32, 8 X 20 MM, PLASTIC, MO-142BD, TSOP1-32

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AT29C020-70TI 数据手册

Features

• Fast Read Access Time – 70 ns

• 5-volt Only Reprogramming

• Sector Program Operation

– Single Cycle Reprogram (Erase and Program)

– 1024 Sectors (256 Bytes/Sector)

– Internal Address and Data Latches for 256 Bytes

• Internal Program Control and Timer

• Hardware and Software Data Protection

• Two 8K Bytes Boot Blocks with Lockout

• Fast Sector Program Cycle Time – 10 ms

• DATA Polling for End of Program Detection

• Low Power Dissipation

2-megabit

(256K x 8)

5-volt Only

Flash Memory

– 40 mA Active Current

– 100 µA CMOS Standby Current

• Typical Endurance > 10,000 Cycles

• Single 5V 10% Supply

• CMOS and TTL Compatible Inputs and Outputs

• Commercial and Industrial Temperature Ranges

• Green (Pb/Halide-free) Packaging Option

AT29C020

1. Description

The AT29C020 is a 5-volt-only in-system Flash programmable and erasable read-only

memory (PEROM). Its 2 megabits of memory is organized as 262,144 bytes. Manu-

factured with Atmel’s advanced nonvolatile CMOS technology, the device offers

access times to 70 ns with power dissipation of just 220 mW over the commercial tem-

perature range. When the device is deselected, the CMOS standby current is less

than 100 µA. Device endurance is such that any sector can typically be written to in

excess of 10,000 times.

To allow for simple in-system reprogrammability, the AT29C020 does not require high

input voltages for programming. Five-volt-only commands determine the operation of

the device. Reading data out of the device is similar to reading from an EPROM.

Reprogramming the AT29C020 is performed on a sector basis; 256 bytes of data are

loaded into the device and then simultaneously programmed.

During a reprogram cycle, the address locations and 256 bytes of data are internally

latched, freeing the address and data bus for other operations. Following the initiation

of a program cycle, the device will automatically erase the sector and then program

the latched data using an internal control timer. The end of a program cycle can be

detected by DATA polling of I/O7. Once the end of a program cycle has been

detected, a new access for a read or program can begin.

0291Q–FLASH–11/05

12 3 4 5 6 7...17

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AT29C020-70TI 替代型号

型号	品牌	替代类型	描述	数据表
AT29C020-70TU	ATMEL	功能相似	2-megabit (256K x 8) 5-volt Only Flash Memory

与AT29C020-70TI相关器件

型号	品牌	获取价格	描述	数据表
AT29C020-70TU	ATMEL	获取价格	2-megabit (256K x 8) 5-volt Only Flash Memory
AT29C020-90	ATMEL	获取价格	2-Megabit 256K x 8 5-volt Only CMOS Flash Memory
AT29C020-90JC	ATMEL	获取价格	2-Megabit 256K x 8 5-volt Only CMOS Flash Memory
AT29C020-90JCT/R	ATMEL	获取价格	Flash, 256KX8, 90ns, PQCC32, PLASTIC, LCC-32
AT29C020-90JI	ATMEL	获取价格	Flash, 256KX8, 90ns, PQCC32, PLASTIC, MS-016AE, LCC-32
AT29C020-90JU	ATMEL	获取价格	2-megabit (256K x 8) 5-volt Only Flash Memory
AT29C020-90PC	ATMEL	获取价格	2-Megabit 256K x 8 5-volt Only CMOS Flash Memory
AT29C020-90TC	ATMEL	获取价格	2-Megabit 256K x 8 5-volt Only CMOS Flash Memory
AT29C020-90TCT/R	ATMEL	获取价格	Flash, 256KX8, 90ns, PDSO32, PLASTIC, TSOP-32
AT29C020-90TI	ATMEL	获取价格	Flash, 256KX8, 90ns, PDSO32, 8 X 20 MM, PLASTIC, MO-142BD, TSOP1-32

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