FEATURES
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
Microchip Technology Inc. is a leading provider of microcontroller and analog semiconductors, providing low-risk product development, lower total system cost and faster time to market for thousands of diverse customer applications worldwide. Headquartered in Chandler, Arizona, Microchip offers outstanding technical support along with dependable delivery and quality.