25LC128T-E/ST16KVAO

Overview

The Microchip Technology 25LC128T-E/ST16KVAO is a 128 Kbit Serial Electrically Erasable PROM featuring a 16,384 x 8-bit organization. It operates via an SPI-compatible serial bus with a maximum clock frequency of 10 MHz at VCC voltages between 4.5V and 5.5V. The device supports a supply voltage range of 2.5V to 5.5V and includes a 64-byte page buffer for write operations. It is housed in an 8-lead TSSOP package and is qualified to the AEC-Q100 automotive standard.

Feature Summary

• Automotive-grade reliability with AEC-Q100 qualification
• Hardware write protection via dedicated WP pin and STATUS register bits
• Data retention exceeding 200 years with high endurance cycles
• Serial communication pause capability through HOLD input

Applications

• Automotive electronic control units requiring non-volatile data storage
• Industrial systems needing extended temperature operation up to +125°C
• Embedded controllers storing configuration parameters or calibration data

Procurement Notes

Verify that the specific suffix '16KVAO' aligns with the manufacturer's current packaging specifications for the TSSOP variant. Confirm that the Extended temperature grade (E) meets the operational thermal requirements of the target environment. Ensure compatibility with the system's SPI interface voltage levels before integration.

Selection Notes

Select this component when automotive certification is mandatory for the application. Choose this part over industrial variants if the operating environment exceeds +85°C. Consider the 64-byte page size constraints for write efficiency compared to larger block memories. Verify that the 2.5V minimum supply voltage matches the system power rail availability.

Part Context

This device belongs to the 25LC128 family of SPI EEPROMs from Microchip Technology. It shares functional similarities with the 25AA128 but differs in supply voltage range and temperature rating. The family provides a standardized interface for microcontrollers lacking built-in SPI ports through firmware emulation.

Replacement Considerations

Public confirmed substitute part numbers: 25LC128-I/ST, 25LC128-E/P.