AT28C64X-20JI

电可擦除可编程只读存储器 64K -200NS IND TEMP

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