23LC1024-I/ST

Memory IC Overview

The Microchip Technology 23LC1024-I/ST is a 1 Mbit (128K x 8-bit) Serial SRAM device housed in an 8-lead TSSOP package. It operates within a supply voltage range of 2.5V to 5.5V and supports industrial temperature conditions from -40°C to +85°C. The component utilizes a SPI-compatible interface with a maximum clock frequency of 20 MHz, supporting SDI and SQI modes for enhanced data throughput.

Memory IC Feature Summary

• Supports SPI, SDI, and SQI bus interfaces for flexible communication protocols
• Provides unlimited read and write cycles with zero write time
• Features low-power CMOS technology with standby current as low as 4 µA at +85°C
• Includes HOLD functionality to suspend serial sequences without resetting the address pointer

Memory IC Applications

• Data logging applications requiring non-volatile storage emulation
• Microcontroller systems needing fast random access memory expansion
• Industrial control systems operating within extended temperature ranges
• Embedded devices utilizing SPI-compatible processors for efficient data buffering

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required temperature grade and package type. Confirm the voltage range aligns with system requirements, as the 'LC' variant specifies 2.5V to 5.5V operation. Ensure compatibility with the host controller's SPI mode settings before integration into the design.

Memory IC Selection Notes

Select this component when a 1 Mbit capacity is required with high-speed serial access capabilities. The Industrial temperature rating makes it suitable for environments where standard commercial grades may fail. Consider the TSSOP package dimensions if board space is constrained compared to larger SOIC or PDIP options.

Memory IC Part Context

This part belongs to the 23LC1024 family of Serial SRAM devices manufactured by Microchip Technology. It shares functional similarities with the 23A1024 but differs in its specified operating voltage range. The series is designed to replace parallel SRAMs in space-constrained designs while maintaining high-speed performance through serial interfaces.

Memory IC Replacement Considerations

The 23LC1024T-I/ST serves as a tape-and-reel replacement for the tube-packaged version. Verify pinout compatibility when substituting with other 1Mbit serial SRAMs from different manufacturers.