AT29C040A-90TU

Product Summary

The AT29C040A-90TU is a 5-volt only in-system Flash Programmable and Erasable Read Only Memory (PEROM). That AT29C040A-90TU has 4 megabits of memory is organized as 524,288 words by 8 bits. Manufactured with Atmel’s advanced nonvolatile CMOS EEPROM technology, the AT29C040A-90TU offers access times up to 90 ns, and a low 220 mW power dissipation. When the AT29C040A-90TU is deselected, the CMOS standby current is less than 100 μA. The AT29C040A-90TU endurance is such that any sector can typically be written to in excess of 10,000 times. The programming algorithm is compatible with other devices in Atmel’s 5-volt only Flash family. To allow for simple in-system reprogrammability, the AT29C040A-90TU 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 AT29C040A-90TU is performed on a sector basis; 256 bytes of data are loaded into the device and then simultaneously programmed.

Parametrics

AT29C040A-90TU absolute maximum ratings :(1)Temperature Under Bias:-55° C to +125°C ; (2)Storage Temperature: -65° C to +150°C; (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

AT29C040A-90TU features: (1)Fast Read Access Time :90 ns; (2)5-volt Only Reprogramming; (3)Sector Program Operation:Single Cycle Reprogram (Erase and Program), 2048 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 16K Bytes Boot Blocks with Lockout; (7)Fast Sector Program Cycle Time :10 ms; (8)DATA Polling for End of Program Detection; (9)Low Power Dissipation：40 mA Active Current, 100 μA CMOS Standby Current; (10)Typical Endurance > 10,000 Cycles; (11)Single 5V ±10% Supply; (12)Green (Pb/Halide-free) Packaging Option.

Diagrams