EmbeddedRelated.com
The 2026 Embedded Online Conference
    Parts   Memory & Storage  SRAM    23A512-I/SN
23A512-I/SN

MCHP23A512-I/SN

Microchip Technology
SRAM Memory IC 512Kbit SPI - Quad I/O 20 MHz 8-SOIC
Active51 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The 23A512-I/SN is a 512 Kbit Serial SRAM organized as 64K x 8 bits, designed for applications requiring temporary data storage without the endurance limits of Flash or EEPROM. It operates over a 1.7V to 2.2V range and features a high-speed SPI interface that supports SDI (Serial Dual Interface) and SQI (Serial Quad Interface) protocols for increased throughput. With a low standby current of 4 uA and 20 MHz clock rate, it is optimized for low-power mobile and battery-operated devices.

Why Choose This Part

This SRAM offers unlimited read/write cycles, eliminating the wear-out concerns associated with non-volatile memory. Its support for Quad I/O (SQI) allows for significantly higher data transfer rates than standard SPI, while the 1.7V minimum supply voltage ensures compatibility with modern low-voltage CPU rails.

Applications

Audio Data Buffering
Provides temporary storage for digital audio streams in low-voltage portable electronics where low latency and high endurance are critical.
Scratchpad Memory
Acts as an external RAM expansion for resource-constrained microcontrollers needing extra workspace for calculations or look-up tables.
Sensor Data Logging
Stores high-frequency sensor readings before batch-processing or transmitting data via a wireless radio.
Display Frame Buffering
Holds image data for small graphical LCDs or OLED displays in 1.8V systems.

Key Specifications

Technology SRAM
Memory Size 512Kbit
Memory Type Volatile
Memory Format SRAM
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Clock Frequency 20 MHz
Memory Interface SPI - Quad I/O
Voltage - Supply 1.7V ~ 2.2V
Memory Organization 64K x 8
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 8-SOIC

Getting Started

To evaluate this part, use a microcontroller with a 1.8V I/O domain or level shifters if interfacing with 3.3V/5V logic. Implement the SPI, SDI, or SQI protocol in your firmware, ensuring the clock frequency does not exceed 20 MHz. The 8-SOIC package is easily integrated onto a breakout board for prototyping with standard breadboards.

Also Consider

23LC512-I/SN MCHPMicrochip Technology - Offers a wider 2.5V to 5.5V supply voltage range for systems not restricted to 1.8V rails.
APS6404L-3SQR-SN AP Memory - A much higher density 64 Mbit Pseudo-SRAM alternative for applications requiring significantly more memory in a similar SOIC-8 package.

Categories

Memory & Storage > SRAM
The 2026 Embedded Online Conference