Description
●The AT28C64 is a low-power, high-performance 8,192 words by 8 bit nonvolatile Electrically Erasable and Programmable Read Only Memory with popular, easy to use features. The device is manufactured with Atmel’s reliable nonvolatile technology.
●The AT28C64 is accessed like a Static RAM for the read or write cycles without the need for external components.
●During a byte write, the address and data are latched in ternally, freeing the microprocessor address and data bus for other operations. Following the initiation of a write cycle, the device will go to a busy state and automatically clear and write the latched data using an internal control timer.
●Features
●• Fast Read Access Time - 120 ns
●• Fast Byte Write - 200 µs or 1 ms
●• Self-Timed Byte Write Cycle
● Internal Address and Data Latches
● Internal Control Timer
● Automatic Clear Before Write
●• Direct Microprocessor Control
● READY/BUSY Open Drain Output
● DATA Polling
●• Low Power
● 30 mA Active Current
● 100 µA CMOS Standby Current
●• High Reliability
● Endurance: 104 or 105 Cycles
● Data Retention: 10 Years
●• 5V ± 10% Supply
●• CMOS and TTL Compatible Inputs and Outputs
●• JEDEC Approved Byte-Wide Pinout
●• Commercial and Industrial Temperature Ranges
