23LC512T-I/ST

Memory IC Overview

The Microchip Technology 23LC512T-I/ST is a 512-Kbit Serial SRAM device housed in an 8-lead TSSOP package. It features a SPI-compatible bus interface supporting SDI and SQI modes with a maximum clock frequency of 20 MHz for the Industrial temperature grade. The memory organization is 64K x 8 bits, utilizing a 32-byte page structure. Operating voltage ranges from 2.5V to 5.5V, with an industrial operating temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Supports SPI, SDI, and SQI interface modes for flexible data transfer rates
• Enables unlimited read and write cycles without write time delays
• Includes a Hold function to suspend serial communication sequences temporarily

Memory IC Applications

• Data logging applications requiring frequent small data writes
• Real-time clock backup memory systems
• Microcontroller cache memory expansion

Memory IC Procurement Notes

Verify that the ordering suffix 'T' corresponds to tape and reel packaging as specified by the manufacturer. Confirm the 'I' suffix indicates the Industrial temperature grade (-40°C to +85°C) rather than Extended grade. Ensure the ST package designation matches the required 8-TSSOP footprint for PCB layout compatibility.

Memory IC Selection Notes

Select this component when non-volatile storage is not required but high endurance and zero write latency are necessary. The 23LC512T-I/ST is suitable for designs needing faster access speeds compared to EEPROMs. Consider the 2.5V to 5.5V supply range for compatibility with various logic levels. Verify system requirements against the 20 MHz clock limit for the Industrial grade variant.

Memory IC Part Context

This part belongs to the 23LC512 family of Serial SRAM devices manufactured by Microchip Technology. It shares functional similarities with the 23A512 but differs in supply voltage requirements. The TSSOP package variant offers a compact surface-mount solution suitable for space-constrained electronic designs requiring reliable volatile memory storage.

Memory IC Replacement Considerations

Public confirmed substitute part numbers include 23LC512-I/SN and 23LC512-I/P. These alternatives offer identical electrical specifications and pinouts but differ in package type (SOIC or PDIP). Verify package dimensions and lead configurations before substitution.