描述 Description

The AT29BV020 is a 2.7-volt-only in-system Flash Programmable and Erasable Read Only Memory (PEROM). Its 2 megabits of memory is organized as 262,144 words by 8 bits. Manufactured with Atmel’s advanced nonvolatile CMOS EEPROM technology, the device offers access times up to 250 ns, and a low 54 mW power dissipation.

特性 Features

? Single Supply Voltage, Range 2.7V to 3.6V

? Single Supply for Read and Write

? Software Protected Programming

? Fast Read Access Time - 250 ns

? Low Power Dissipation

15 mA Active Current

20 μA CMOS Standby Current

? Sector Program Operation

Single Cycle Reprogram (Erase and Program)

1024 Sectors (256 bytes/sector)

Internal Address and Data Latches for 256-Bytes

? Two 8 KB Boot Blocks with Lockout

? Fast Sector Program Cycle Time - 20 ms Max.

? Internal Program Control and Timer

? DATA Polling for End of Program Detection

? Typical Endurance > 10,000 Cycles

? CMOS and TTL Compatible Inputs and Outputs

? Commercial and Industrial Temperature Ranges