25LC320A-E/ST16KVAO

Overview

The Microchip Technology 25LC320A-E/ST16KVAO is a 32-Kbit Serial Electrically Erasable PROM featuring an SPI-compatible interface. It utilizes low-power CMOS technology with a supply voltage range of 2.5V to 5.5V and supports clock frequencies up to 10 MHz. The memory array is organized as 4096 x 8 bits with a 32-byte page size. It operates within an extended temperature range of -40°C to +125°C and is housed in an 8-lead TSSOP package.

Feature Summary

• Supports high-speed serial communication via SPI bus with hold functionality for interrupt servicing
• Includes hardware write protection mechanisms and block-level array protection
• Features built-in power-on/off data protection circuitry and self-timed erase/write cycles

Applications

• Data logging in industrial control systems
• Configuration storage for microcontroller-based devices
• Parameter retention in automotive electronic modules

Procurement Notes

Verify the specific suffix '16KVAO' against official Microchip documentation, as standard datasheets list 'ST' for TSSOP packages without this suffix. Confirm AEC-Q100 qualification status and RoHS compliance directly with the manufacturer or authorized distributors to ensure alignment with project requirements.

Selection Notes

Select this component when extended temperature operation up to 125°C is required alongside a surface-mount TSSOP footprint. Ensure the system design accommodates the 2.5V minimum supply voltage and provides adequate decoupling for the specified standby current levels during low-power states.

Part Context

This device belongs to the 25LC320A series of 32-Kbit EEPROMs manufactured by Microchip Technology. It shares architectural similarities with the 25AA320A but differs in operating voltage specifications. The series is designed for applications requiring non-volatile data storage with reliable endurance and long-term data retention capabilities.

Replacement Considerations

Cross-reference with other 25LC320A variants such as 25LC320A-E/SN or 25LC320A-I/ST for pin-compatible alternatives. Verify that any substitute maintains the same voltage range, temperature grade, and package dimensions before implementation.