Atmel AT29C020 Manuals

The AT29C020 is a 5-volt in-system Flash programmable and erasable read-only memory (PEROM) from Atmel.

AT29C020 is a 5-volt-only in-system Flash programmable and erasable read-only memory (PEROM) manufactured by Atmel. It has 2 megabits of memory organized as 262,144 bytes. The device offers access times to 70 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. 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 requires the use of special commands, which are explained in this document.