23A1024-I/ST

Memory IC Overview

The Microchip Technology 23A1024-I/ST is a 1 Mbit Serial Static Random Access Memory (SRAM) device. It features an SPI-compatible bus interface supporting SDI and SQI modes with a maximum clock frequency of 20 MHz. The memory organization is 128K x 8 bits, utilizing an 8-lead TSSOP package. Operating voltage ranges from 1.7 V to 2.2 V, with an industrial temperature range of -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
• Operates in Byte, Page, and Sequential access modes
• Includes a HOLD function to suspend serial communication sequences

Memory IC Applications

• Data logging applications requiring frequent updates
• Real-time buffer storage for microcontroller systems
• Embedded systems needing non-volatile-like temporary storage

Memory IC Procurement Notes

Verify the specific suffix 'I' confirms the Industrial temperature grade (-40°C to +85°C). Confirm the '/ST' designation matches the required TSSOP-8 package type. Ensure the supply voltage requirements align with the 1.7V to 2.2V operating range specified for the 23A1024 series.

Memory IC Selection Notes

Select this component when low-power SRAM with high-speed serial access is required. The 23A1024-I/ST is suitable for designs needing unlimited endurance compared to EEPROMs. Consider the 23LC1024 if a wider voltage range up to 5.5V is necessary instead of the lower voltage operation of the 23A1024.

Memory IC Part Context

This part belongs to the 23A1024/23LC1024 family of 1 Mbit Serial SRAM devices. These components are designed to interface directly with SPI ports on popular microcontroller families. The family offers dual and quad I/O capabilities to enhance throughput beyond standard SPI speeds.

Memory IC Replacement Considerations

The 23LC1024 is a functional equivalent within the same family but operates at a higher voltage range (2.5V to 5.5V). Verify voltage compatibility before substitution. Other 1 Mbit serial SRAMs may differ in interface speed or package availability.