Product Summary

The AT29C020-90PI 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 AT29C020-90PI offers access times to 70 ns with power dissipation of just 220 mW over the commercial temperature range. When the AT29C020-90PI 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.

Parametrics

AT29C020-90PI absolute maximum ratings: (1)Temperature Under Bias: -55℃ to +125℃; (2)Storage Temperature: -65℃ to +150℃; (3)All Input Voltages (including NC Pins) with Respect to Ground: -0.6V to +6.25V; (4)All Output Voltages with Respect to Ground: -0.6V to VCC + 0.6V; (5)Voltage on OE with Respect to Ground: -0.6V to +13.5V.

Features

AT29C020-90PI features: (1)Fast Read Access Time-70 ns; (2)5-volt Only Reprogramming; (3)Sector Program Operation: Single Cycle Reprogram (Erase and Program), 1024 Sectors (256 Bytes/Sector), Internal Address and Data Latches for 256 Bytes; (4)Internal Program Control and Timer; (5)Hardware and Software Data Protection; (6)Two 8K Bytes Boot Blocks with Lockout; (7)Fast Sector Program Cycle Time -10 ms; (8)DATA Polling for End of Program Detection.

Diagrams

AT29C020-90PI block diagram

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