23LC1024T-I/ST

Memory IC Overview

The Microchip Technology 23LC1024T-I/ST is a 1 Mbit 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. The memory organization is 128K x 8-bit, utilizing a 32-byte page structure. Operating voltage ranges from 2.5V to 5.5V, with industrial temperature support spanning -40°C to +85°C.

Memory IC Feature Summary

• Supports SPI, SDI, and SQI bus interfaces for flexible data transfer rates
• Provides unlimited read and write cycles with zero write time
• Enables byte, page, and sequential operation modes via the MODE register
• Includes HOLD functionality to suspend serial communication sequences

Memory IC Applications

• Data logging applications requiring non-volatile storage backup
• Microcontroller systems needing extended RAM expansion
• Industrial control systems operating within specified temperature ranges
• Embedded devices utilizing SPI-compatible communication protocols

Memory IC Procurement Notes

Verify the specific suffix 'T' indicates tape and reel packaging when ordering. Confirm the 'I' designation matches the required industrial temperature range of -40°C to +85°C. Ensure the supply voltage aligns with the 2.5V to 5.5V specification. Cross-reference the datasheet revision DS20005142C for accurate pin configurations and electrical characteristics before finalizing procurement.

Memory IC Selection Notes

Select this component for designs requiring high-speed serial access without complex parallel interfaces. The SQI mode offers increased throughput compared to standard SPI. Consider the 8-TSSOP package constraints for PCB layout. Verify that the host microcontroller supports the required instruction set or can implement the protocol via software GPIO if hardware SPI is unavailable.

Memory IC Part Context

This part belongs to the 23LC1024 family of 1 Mbit Serial SRAMs. It shares functional similarities with the 23A1024 but differs in operating voltage requirements. The device is designed to interface directly with popular microcontroller families, including Microchip PIC controllers, serving as a reliable volatile memory solution for temporary data storage.

Memory IC Replacement Considerations

The 23LC1024-I/ST is a direct equivalent excluding the tape and reel packaging suffix. The 23LC512 series offers similar functionality with half the memory density.