Description:
The Microchip Technology Inc. 23A512/23LC512 are 512Kbit 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. Additionally, SDI (Serial Dual Interface) and SQI (Serial Quad Interface) is supported if your application needs faster data rates.

FEATUREs:
SPI-Compatible Bus Interface:
 - 20 MHz Clock rate
 - SPI/SDI/SQI mode
Low-Power CMOS Technology:
 - Read Current: 3 mA at 5.5V, 20 MHz
 - Standby Current: 4 A at +85°C
Unlimited Read and Write Cycles
Zero Write Time
64K x 8-bit Organization:
 - 32-byte page
Byte, Page and Sequential mode for Reads and Writes
High Reliability
Temperature Ranges Supported:
RoHS Compliant
8-Lead SOIC, TSSOP and PDIP Packages
   - Industrial (I): -40C to +85C
   - Automotive (E): -40C to +125C