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Product Detailed Parameters
- Description：IC EEPROM 64KBIT PARALLEL
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Memory Type：Non-Volatile
- Memory Format：EEPROM
- Technology：EEPROM
- Memory Size：64Kbit
- Memory Organization：8K x 8
- Memory Interface：Parallel
- Clock Frequency：-
- Write Cycle Time - Word, Page：1ms
- Voltage - Supply：4.5V ~ 5.5V
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Access Time：200 ns
- Grade：-
- Qualification：-
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Overview
The Microchip Technology 28C64A-20B/UC is a CMOS 64K (8K x 8) electrically erasable and programmable read-only memory. It features a parallel interface with a maximum access time of 200 ns. The device operates on a supply voltage range of 4.5V to 5.5V. It is housed in a CQCC32 package, which contains 32 pins. The component supports high reliability performance with endurance ratings typically cited at 1 million write cycles.
Feature Summary
- Non-volatile storage capability retaining data without power
- Parallel interface architecture for direct system connection
- CMOS fabrication technology ensuring low power consumption
Applications
- Industrial control systems requiring persistent configuration storage
- Embedded firmware storage in microcontroller-based designs
- Data logging applications needing reliable non-volatile retention
Procurement Notes
Verify the specific suffix 'UC' corresponds to the CQCC32 ceramic package variant when sourcing. Confirm RoHS compliance status as this specific part number may be classified as non-compliant depending on the manufacturing date code. Ensure the supplier provides genuine Microchip Technology components to guarantee the specified 200 ns access time and electrical characteristics are met.
Selection Notes
Select this component when a parallel EEPROM interface is required for legacy or specific system architectures. The 200 ns speed suits moderate-frequency bus operations. Consider the CQCC32 package constraints for PCB layout. Verify that the 4.5V to 5.5V operating voltage aligns with the target system's power rails before integration.
Part Context
This part belongs to the 28C64A family of 64K-bit EEPROMs from Microchip Technology. The family offers various speed grades and package options, including plastic and ceramic variants. The 28C64A series is designed for applications requiring reliable, electrically alterable non-volatile memory with standard parallel communication protocols.
Replacement Considerations
The 28C64A-20B/P is a pin-compatible alternative in a different package type. Other 28C64A variants with different speed grades or suffixes may serve as substitutes if electrical parameters match the design requirements.
