23A256T-I/SN

Memory IC Overview

The Microchip Technology 23A256T-I/SN is a 256 Kbit Serial Static Random Access Memory (SRAM) device. It features a 32,768 x 8-bit organization and accesses memory via a Serial Peripheral Interface (SPI) compatible bus. The component operates within a supply voltage range of 1.5 V to 1.95 V and supports a maximum clock frequency of 20 MHz depending on voltage conditions. It utilizes an 8-lead TSSOP package and functions within an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Supports flexible operating modes including byte read/write, page mode with 32-byte pages, and sequential mode for continuous array access.
• Includes a HOLD pin that suspends serial communication without resetting the sequence, allowing the host to service higher priority interrupts.
• Utilizes low-power CMOS technology to minimize active read current and standby power consumption during idle states.

Memory IC Applications

• Data buffering in microcontroller systems requiring temporary storage
• Real-time data logging applications needing fast write speeds
• Embedded systems interfacing via SPI-compatible buses

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 for your environment. Ensure the supply voltage provided to the circuit strictly adheres to the 1.5 V to 1.95 V specification to prevent functional failure or damage to the SRAM array.

Memory IC Selection Notes

Select this component when volatile memory with high-speed serial access is required. It is suitable for designs where non-volatile retention is unnecessary but rapid data manipulation is critical. Compare against EEPROM alternatives if data persistence across power cycles is needed, as this device loses content upon power loss.

Memory IC Part Context

This part belongs to the 23X256 family of low-power serial SRAMs from Microchip Technology. It shares architectural similarities with the 23K256 model but differs primarily in its lower operating voltage requirements. The family is designed for direct integration with popular microcontroller families supporting standard SPI protocols.

Memory IC Replacement Considerations

The 23K256T-I/SN serves as a functional substitute if the application can support a higher supply voltage range of 2.7 V to 3.6 V instead of the 1.5 V to 1.95 V required by the 23A256 series.