AT28C64E-12JI

Memory IC Overview

The AT28C64E-12JI is a high-performance, low-power 8K x 8 parallel EEPROM manufactured by Microchip Technology. It features a fast read access time of 120 ns and operates on a single 5V ± 10% supply. The device supports industrial temperature ranges from -40°C to +85°C and utilizes CMOS technology for low active current (45 mA) and standby current (100 µA). It includes self-timed byte write cycles with internal address and data latches, offering high reliability with endurance up to 100,000 write/erase cycles and 10-year data retention.

Memory IC Feature Summary

• Self-timed byte write cycle with internal control timer and automatic clear before write
• Direct microprocessor control via READY/BUSY open drain output and DATA polling
• High reliability with extended endurance and improved data retention characteristics
• CMOS and TTL compatible inputs and outputs with JEDEC approved pinout

Memory IC Applications

• Industrial control systems requiring nonvolatile memory
• Embedded applications needing direct microprocessor interface
• Data logging and tracking using extra identification bytes

Memory IC Procurement Notes

Verify the specific suffix 'JI' corresponds to the Industrial temperature range (-40°C to +85°C) and 32-lead PLCC package as defined in the official ordering guide. Confirm the 'E' designation indicates the high endurance option with 100,000 write cycles and 200 µs write time. Ensure compatibility with system voltage levels and timing requirements before integration.

Memory IC Selection Notes

Select this component when an industrial temperature range and 32-lead PLCC package are required. The 'E' suffix provides higher endurance compared to standard versions. Verify that the 120 ns access time meets system speed requirements. Consider the 45 mA active current consumption for power budgeting in always-on applications.

Memory IC Part Context

This part belongs to the AT28C64 family of 64Kbit parallel EEPROMs. The 'E' variant offers enhanced endurance and faster write times compared to the base model. The 'JI' suffix specifies the industrial temperature grade and plastic J-leaded chip carrier package. This series is designed for applications requiring reliable nonvolatile storage with simple parallel interfaces.

Memory IC Replacement Considerations

Compatible replacements within the same family include AT28C64-12JI (standard endurance) or AT28C64X-12JI (without RDY/BUSY pin). Cross-family replacements require verification of pinout compatibility and electrical specifications.