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. 

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 μA 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 Range Supported:
• Pb-Free and RoHS Compliant, Halogen Free
• 8-Lead SOIC, TSSOP and PDIP Packages
   - Industrial (I): -40°C to +85°C