23LC512-E/ST

Memory IC Overview

The Microchip Technology 23LC512-E/ST is a 512-Kbit Serial SRAM device housed in an 8-lead TSSOP package. It supports SPI, SDI, and SQI interfaces with a maximum clock frequency of 16 MHz for the Extended temperature grade. The supply voltage range is 2.5V to 5.5V. Memory organization is 64K x 8 bits. Operating temperature ranges from -40°C to +125°C.

Memory IC Feature Summary

• Supports SPI, SDI, and SQI bus interfaces
• Unlimited read and write cycles
• Zero write time operation
• Holds data retention down to 1.0V

Memory IC Applications

• Microcontroller system memory expansion
• Data logging applications requiring high endurance
• Industrial control systems operating at extended temperatures

Memory IC Procurement Notes

Verify the 'E' suffix indicates the Extended temperature range (-40°C to +125°C) and the 'ST' suffix denotes the 8-lead TSSOP package. Confirm the specific datasheet revision matches the required electrical characteristics, particularly the 16 MHz clock limit for this temperature grade.

Memory IC Selection Notes

Select this component when non-volatile storage endurance is insufficient but low latency is required. The Extended temperature grade suits harsh environments. Ensure the host controller supports the desired interface mode (SPI, SDI, or SQI) and operates within the 2.5V to 5.5V supply range.

Memory IC Part Context

This part belongs to the 23LC512 family of serial SRAMs. It shares features with the Industrial grade variant but offers a wider operating temperature range. The device provides a volatile memory alternative to EEPROM, offering faster access times and unlimited write endurance.

Memory IC Replacement Considerations

The 23LC512-I/ST is a compatible substitute with identical electrical specifications except for the reduced operating temperature range (-40°C to +85°C). Verify thermal requirements before substitution.