29C020

Features Fast Read Access Time - 90 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 8 KB Boot Blocks with Lockout Fast Sector Program Cycle Time - 10 ms DATA Polling for End of Program Detection Low Power Dissipation 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 2-Megabit (256K x 8) 5-volt Only CMOS Flash Memory AT29C020 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. Manufactured with Atmel’s advanced nonvolatile CMOS technology, the device offers access times to 90 ns with power dissipation of just 220 mW over the commercial temperature 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. (continued) DIP Top View AT29C020 Pin Configurations Pin Name A0 - A17 CE OE WE Function Addresses Chip Enable Output Enable Write Enable I/O0 - I/O7 Data Inputs/Outputs NC No Connect PLCC Top View TSOP Top View Type 1 0291I/G20-I–6/97 Description (Continued) To all...