23K256 256 Kbit (32K x 8) Serial SPI SRAM SOP-8
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Prices updated: 13 Oct 2026
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About this product
23K256 is a 256 Kbit (32K x 8) serial SRAM from Microchip, accessed over SPI. It adds volatile RAM to microcontroller projects that need more memory than the on-chip RAM, in an SOP-8 package for 2.7 V to 5.5 V systems.
Specifications
- Memory size
- 256 Kbit (32K x 8, 32 KB)
- Interface
- SPI (Serial Peripheral Interface)
- Operating voltage
- 2.7 V to 5.5 V
- Operating temperature range
- -40 °C to +85 °C
- Package
- SOP-8
- Memory type
- Volatile SRAM
Frequently asked questions
Does the 23K256 keep data when power is removed?
No. It is SRAM, which is volatile, so stored data is lost when power is removed. Store anything you need to keep in non-volatile memory such as EEPROM or flash.
How is it wired to a microcontroller?
It connects over SPI using the chip select (CS), serial data in and out (SI and SO), clock (SCK), and power and ground. The HOLD pin should be tied high to VCC if it is not used.
