23LC1024-E/ST

Memory IC Overview

The Microchip Technology 23LC1024-E/ST is a 1 Mbit (128K x 8) Serial Static Random Access Memory device. It operates within a supply voltage range of 2.5 V to 5.5 V and supports an automotive temperature range from -40°C to +125°C. The component utilizes a Serial Peripheral Interface (SPI) compatible bus with a maximum clock frequency of 16 MHz for the E-temp grade. It features SDI (dual I/O) and SQI (quad I/O) compatibility, allowing for increased data throughput in supported modes.

Memory IC Feature Summary

• Supports SPI, SDI, and SQI interface protocols for flexible system integration
• Provides unlimited read and write cycles with zero write time
• Operates across a wide voltage range from 2.5 V to 5.5 V
• Includes a HOLD function to suspend serial communication without resetting sequences

Memory IC Applications

• Automotive embedded systems requiring extended temperature reliability
• Microcontroller memory expansion for applications exceeding on-chip RAM limits
• Industrial control systems utilizing SPI-based architectures
• Data logging devices requiring high-speed random access storage

Memory IC Procurement Notes

Verify that the specific ordering suffix corresponds to the Automotive (E) temperature grade (-40°C to +125°C) and the TSSOP-8 package type. Confirm the maximum clock frequency requirement aligns with the 16 MHz limit specified for this grade, as opposed to the higher speeds available in Industrial variants. Ensure power supply rails remain strictly within the 2.5 V to 5.5 V operational window to maintain device integrity.

Memory IC Selection Notes

Select this component when automotive-grade environmental tolerance is mandatory alongside serial memory expansion. The 16 MHz clock speed is sufficient for most standard SPI peripherals but may require mode switching to SDI or SQI for higher bandwidth needs. Consider the 8-TSSOP package constraints regarding board space and thermal dissipation relative to other package options like SOIC or PDIP.

Memory IC Part Context

This part belongs to the 23LC1024 series of 1 Mbit Serial SRAMs manufactured by Microchip Technology. It shares architectural similarities with the 23A1024 but differs in operating voltage and temperature specifications. The 'E' designation specifically denotes the extended automotive temperature rating, while '/ST' identifies the surface-mount TSSOP packaging configuration.

Memory IC Replacement Considerations

Public confirmed substitute part numbers: 23LC1024-I/ST.