25LC128T-E/SN16KVAO

Overview

The Microchip Technology 25LC128T-E/SN16KVAO is a 128 Kbit Serial Electrically Erasable PROM accessed via an SPI-compatible serial bus. It features a 16,384 x 8-bit organization with a 64-byte page size. The device operates within a supply voltage range of 2.5V to 5.5V and supports a maximum clock frequency of 10 MHz at 5.5V. It is housed in an 8-lead SOIC package and qualified for the extended temperature range of -40°C to +125°C.

Feature Summary

• Supports sequential read operations and self-timed erase/write cycles with a maximum duration of 5 ms.
• Includes built-in write protection mechanisms such as power-on/off data protection, a write enable latch, and a dedicated write-protect pin.
• Offers block write protection capabilities allowing users to protect none, one-quarter, one-half, or the entire memory array.
• Features high reliability characteristics including over one million erase/write cycle endurance and greater than 200 years of data retention.

Applications

• Data storage in microcontroller systems requiring non-volatile memory
• Industrial applications operating within extended temperature ranges
• Automotive electronic systems requiring AEC-Q100 qualification

Procurement Notes

Verify that the specific ordering suffix '16KVAO' corresponds to the required tape and reel quantity configuration, as standard datasheets may list generic packaging options. Confirm the extended temperature grade (E) and SOIC package type match the design requirements. Ensure compatibility with the 2.5V to 5.5V supply voltage range for the target application environment.

Selection Notes

Select this component when an SPI interface is required for 128 Kbit non-volatile storage in environments demanding operation up to 125°C. The 25LC128 series is suitable for designs needing hardware write protection and high endurance. Compare against the 25AA128 if lower voltage operation down to 1.8V is necessary, as the LC variant requires a minimum of 2.5V.

Part Context

This part belongs to the 25XX128 family of Serial EEPROMs from Microchip Technology. The family includes variants like the 25AA128 and 25LC128, which share functional similarities but differ in voltage ranges and temperature grades. The 25LC128 specifically targets industrial and automotive sectors with its extended temperature capability and AEC-Q100 qualification.

Replacement Considerations

The 25LC128T-I/ST is a documented substitute offering similar functionality in an 8-TSSOP package with industrial temperature ratings. Verify pinout compatibility and ensure the replacement meets the specific voltage and temperature requirements of the original design.