23A640 Series

1.5-1.95V 64Kb SPI Serial SRAM

Catalog

1.5-1.95V 64Kb SPI Serial SRAM

Part	Memory Format	Operating Temperature (Max)	Operating Temperature (Min)	Technology	Mounting Type	Memory Type	Clock Frequency	Memory Depth	Memory Width	Voltage - Supply (Minimum)	Voltage - Supply (Maximum)	Memory Size	Memory Interface (Type)	Package Length	Package Name	Package Width
Microchip Technology 23A640T-I/SN	SRAM	85 °C	-40 °C	SRAM	Surface Mount	Volatile	20 MHz	8 K	8 bit	1.7 V	1.95 V	8 KB	SPI	0.154 in	8-SOIC	3.9 mm
Microchip Technology 23A640-I/P	SRAM	85 °C	-40 °C	SRAM	Through Hole	Volatile	20 MHz	8 K	8 bit	1.7 V	1.95 V	8 KB	SPI	0.3 in	8-DIP 8-PDIP	7.62 mm
Microchip Technology 23A640-I/ST	SRAM	85 °C	-40 °C	SRAM	Surface Mount	Volatile	20 MHz	8 K	8 bit	1.7 V	1.95 V	8 KB	SPI	0.173 in	8-TSSOP	4.4 mm
Microchip Technology 23A640-I/SN	SRAM	85 °C	-40 °C	SRAM	Surface Mount	Volatile	20 MHz	8 K	8 bit	1.7 V	1.95 V	8 KB	SPI	0.154 in	8-SOIC	3.9 mm
Microchip Technology 23A640T-I/ST	SRAM	85 °C	-40 °C	SRAM	Surface Mount	Volatile	20 MHz	8 K	8 bit	1.7 V	1.95 V	8 KB	SPI	0.173 in	8-TSSOP	4.4 mm

Catalog

1.5-1.95V 64Kb SPI Serial SRAM

Description

The Microchip Technology Inc. 23X640 are 64 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 23X640 is available in standard packages including 8-lead PDIP and SOIC, and advanced packaging including 8-lead TSSOP.