25C320T-E/SN

Memory IC Overview

The Microchip Technology 25C320T-E/SN is a 32 Kbit serial Electrically Erasable PROM featuring a 4096 x 8 bit organization. It operates within a voltage range of 4.5 V to 5.5 V and supports a maximum clock frequency of 3 MHz. The device utilizes an SPI-compatible interface and is housed in an 8-pin SOIC package with tape-and-reel packaging. It is rated for industrial and automotive temperature ranges, spanning from -40 °C to +125 °C.

Memory IC Feature Summary

• Supports high-speed serial communication via a standard SPI bus interface
• Includes built-in hardware write protection mechanisms and block protection capabilities
• Features self-timed erase and write cycles with automatic status polling
• Provides data retention exceeding 200 years and high endurance ratings

Memory IC Applications

• Embedded systems requiring non-volatile data storage
• Industrial control applications operating in harsh environments
• Automotive electronic modules needing extended temperature tolerance

Memory IC Procurement Notes

Verify the specific suffix 'E' confirms the automotive temperature grade (-40°C to +125°C) and the 'SN' indicates the SOIC-8 package. Confirm the 'T' suffix matches the required tape-and-reel packaging format rather than tube or cut tape. Ensure the supply voltage aligns with the 4.5V to 5.5V operational range specified for this variant.

Memory IC Selection Notes

Select this component when a 32 Kbit EEPROM is required with a 3 MHz SPI interface speed. It is suitable for designs needing robust data retention and high endurance. Consider the 4.5V minimum supply voltage requirement. Verify that the 8-pin SOIC footprint fits the PCB layout constraints.

Memory IC Part Context

This part belongs to the 25XX320 family of serial EEPROMs manufactured by Microchip Technology. It shares architectural similarities with the 25LC320 and 25AA320 but is distinguished by its higher voltage requirements and faster clock speeds. The datasheet DS21227F provides comprehensive electrical and timing specifications for integration.

Memory IC Replacement Considerations

Public confirmed substitute part numbers: 25LC320T-E/SN, 25AA320T-I/SN.