AT28C64B-15SU

Product Summary

The AT28C64B-15SU is a high-performance electrically-erasable and programmable readonly memory (EEPROM). Its 64K of memory is organized as 8,192 words by 8 bits. Manufactured with Atmel’s advanced nonvolatile CMOS technology, the device offers access times to 150 ns with power dissipation of just 220 mW. When the device is deselected, the CMOS standby current is less than 100 μA. The AT28C64B-15SU is accessed like a Static RAM for the read or write cycle without the need for external components. The device contains a 64-byte page register to allow writing of up to 64 bytes simultaneously. During a write cycle, the addresses and 1 to 64 bytes of data are internally latched, freeing the address and data bus for other operations. Following the initiation of a write cycle, the AT28C64B-15SU will automatically write the latched data using an internal control timer. The end of a write cycle can be detected by DATA POLLING of I/O7. Once the end of a write cycle has been detected, a new access for a read or write can begin.

Parametrics

AT28C64B-15SU 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 and A9 with Respect to Ground: -0.6V to +13.5V.

Features

AT28C64B-15SU features: (1)Fast Read Access Time ?150 ns; (2)Automatic Page Write Operation, Internal Address and Data Latches for 64 Bytes; (3)Fast Write Cycle Times: Page Write Cycle Time: 10 ms Maximum (Standard) 2 ms Maximum (Option ?Ref. AT28HC64BF Datasheet); 1 to 64-byte Page Write Operation; (4)Low Power Dissipation: 40 mA Active Current; 100 μA CMOS Standby Current; (5)Hardware and Software Data Protection; (6)DATA Polling and Toggle Bit for End of Write Detection; (7)High Reliability CMOS Technology: Endurance: 100,000 Cycles; Data Retention: 10 Years; (8)ingle 5V ?0% Supply; (9)CMOS and TTL Compatible Inputs and Outputs; (10)JEDEC Approved Byte-wide Pinout; (11)Industrial Temperature Ranges; (12)Green (Pb/Halide-free) Packaging Option.

Diagrams