23LC1024T-E/ST

Memory IC Overview

The Microchip Technology 23LC1024T-E/ST is a 1 Mbit Serial Static Random Access Memory (SRAM) device. It features an SPI-compatible interface with support for SDI and SQI modes, operating at clock frequencies up to 20 MHz in industrial temperature ranges and 16 MHz in automotive ranges. The device utilizes low-power CMOS technology, offering unlimited read/write cycles and zero write time. It operates within a supply voltage range of 2.5V to 5.5V and is housed in an 8-lead TSSOP package.

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
• Operates across extended automotive temperature ranges (-40°C to +125°C)
• Includes HOLD functionality to suspend serial communication sequences

Memory IC Applications

• Embedded systems requiring external high-speed data buffering
• Automotive electronics demanding extended temperature reliability
• Microcontroller-based designs needing non-volatile-like SRAM performance without refresh cycles
• Industrial control applications utilizing serial peripheral interfaces

Memory IC Procurement Notes

Verify the specific ordering suffix 'E' confirms the automotive temperature grade (-40°C to +125°C) and the 'ST' indicates the 8-lead TSSOP package. Confirm that the datasheet revision matches the required specifications, as electrical characteristics such as maximum clock frequency may vary between Industrial and Automotive grades. Ensure compatibility with the host controller's SPI mode settings.

Memory IC Selection Notes

Select this component when an application requires 1 Mbit of fast, random-access memory with serial connectivity. The Automotive grade ensures operation in harsh thermal environments where standard Industrial parts would fail. Consider the SQI capability if higher throughput is needed compared to standard SPI. Verify that the host microcontroller supports the required instruction set or can implement it via software GPIO.

Memory IC Part Context

This part belongs to the 23LC1024 family of 1 Mbit Serial SRAMs from Microchip Technology. It shares architectural similarities with the 23A1024 but differs in supply voltage requirements and temperature ratings. The 'T' suffix typically denotes tape and reel packaging, while 'ST' specifies the TSSOP form factor. It serves as a drop-in replacement for other 1 Mbit serial SRAMs with compatible pinouts and command sets.

Memory IC Replacement Considerations

Public confirmed substitute part numbers: 23LC1024-I/ST (Industrial grade), 23LC1024-E/P (Automotive grade, PDIP package). Note that package type and temperature grade must match application requirements when substituting.