25LC320A-H/SN16KVAO

Overview

The Microchip Technology 25LC320A-H/SN16KVAO is a mid-density Serial Electrically Erasable PROM (EEPROM) with a storage capacity of 32 Kbit, organized as 4,096 x 8 bits. It operates within a supply voltage range of 2.5 V to 5.5 V and supports a maximum clock frequency of 5 MHz at voltages between 4.5 V and 5.5 V. The device utilizes an 8-Lead Plastic Small Outline (SOIC) package and is qualified for an extended temperature range from -40°C to +150°C.

Feature Summary

• Supports SPI-compatible serial bus architecture with separate data in and out lines.
• Includes built-in write protection via power-on/off circuitry and a dedicated write-protect pin.
• Features block-level write protection allowing selective array segment locking.
• Provides high reliability with over one million erase/write cycles and extended data retention.

Applications

• Microcontroller system data logging
• Configuration parameter storage
• Calibration value retention

Procurement Notes

Verify the specific suffix 'H' confirms the extended temperature grade (-40°C to +150°C). Confirm the 'SN' designation matches the required 8-Lead SOIC package dimensions. Ensure the 'VAO' suffix aligns with current automotive AEC-Q100 qualification requirements if applicable to the design.

Selection Notes

Select this component when high-temperature operation up to +150°C is required. The 32 Kbit density suits applications needing moderate non-volatile storage. Verify that the host microcontroller supports the SPI protocol or can emulate it via discrete I/O lines for proper communication.

Part Context

This part belongs to the 25LCXXX family of mid-density Serial EEPROMs. It shares architectural similarities with other densities in the series, such as the 25LC080C and 25LC640A, while differing in memory organization and page size specifications defined in the selection table.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.