23K256 Series

2.7-3.6V 256Kb SPI Serial SRAM

Catalog

2.7-3.6V 256Kb SPI Serial SRAM

Part	Voltage - Supply [Min]	Voltage - Supply [Max]	Memory Format	Mounting Type	Memory Size	Package / Case	Package / Case	Package / Case	Operating Temperature [Min]	Operating Temperature [Max]	Memory Interface	Memory Type	Technology	Clock Frequency	Supplier Device Package	Memory Organization	Package / Case [custom]	Package / Case [custom]	Package / Case [y]	Package / Case [x]
Microchip Technology 23K256-E/P	2.7 V	3.6 V	SRAM	Through Hole	32 KB	0.3 in	8-DIP	7.62 mm	-40 °C	125 °C	SPI	Volatile	SRAM	20 MHz	8-PDIP	32K x 8
Microchip Technology 23K256-E/ST	2.7 V	3.6 V	SRAM	Surface Mount	32 KB		8-TSSOP		-40 °C	125 °C	SPI	Volatile	SRAM	20 MHz	8-TSSOP	32K x 8	0.173 "	4.4 mm
Microchip Technology 23K256T-E/ST	2.7 V	3.6 V	SRAM	Surface Mount	32 KB		8-TSSOP		-40 °C	125 °C	SPI	Volatile	SRAM	20 MHz	8-TSSOP	32K x 8	0.173 "	4.4 mm
Microchip Technology 23K256-I/P	2.7 V	3.6 V	SRAM	Through Hole	32 KB	0.3 in	8-DIP	7.62 mm	-40 °C	85 °C	SPI	Volatile	SRAM	20 MHz	8-PDIP	32K x 8
Microchip Technology 23K256T-I/SN	2.7 V	3.6 V	SRAM	Surface Mount	32 KB		8-SOIC		-40 °C	85 °C	SPI	Volatile	SRAM	20 MHz	8-SOIC	32K x 8			3.9 mm	0.154 in
Microchip Technology 23K256T-E/SN	2.7 V	3.6 V	SRAM	Surface Mount	32 KB		8-SOIC		-40 °C	125 °C	SPI	Volatile	SRAM	20 MHz	8-SOIC	32K x 8			3.9 mm	0.154 in
Microchip Technology 23K256T-I/ST	2.7 V	3.6 V	SRAM	Surface Mount	32 KB		8-TSSOP		-40 °C	85 °C	SPI	Volatile	SRAM	20 MHz	8-TSSOP	32K x 8	0.173 "	4.4 mm
Microchip Technology 23K256-I/SN	2.7 V	3.6 V	SRAM	Surface Mount	32 KB		8-SOIC		-40 °C	85 °C	SPI	Volatile	SRAM	20 MHz	8-SOIC	32K x 8			3.9 mm	0.154 in
Microchip Technology 23K256-I/ST	2.7 V	3.6 V	SRAM	Surface Mount	32 KB		8-TSSOP		-40 °C	85 °C	SPI	Volatile	SRAM	20 MHz	8-TSSOP	32K x 8	0.173 "	4.4 mm

Catalog

2.7-3.6V 256Kb SPI Serial SRAM

Key Features

• + Max. Clock 20 MHz

• + Low-Power CMOS Technology:

-- Read Current: 3 mA at 1 MHz

-- Standby Current: 4 µA Max. at 3.6V

• + 32,768 x 8-bit Organization

• + 32-Byte Page

• + HOLD pin

• + Flexible Operating modes:

-- Byte read and write

-- Page mode (32 Byte Page)

-- Sequential mode

• + Sequential Read/Write

Description

The Microchip Technology Inc. 23X256 are 256 Kbit Serial SRAM devices. The memory is accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus separate data in (SI) and data out (SO) lines. Access to the device is controlled through a Chip Select (CS) input. Communication to the device can be paused via the hold pin (HOLD). While the device is paused, transitions on its inputs will be ignored, with the exception of Chip Select, allowing the host to service higher priority interrupts. The 23X256 is available in standard packages including 8-lead PDIP and SOIC, and advanced packaging including 8-lead TSSOP.