23A512

23A512/23LC512 512-Kbit SPI Serial SRAM with SDI and SQI Interface Device Selection Table Part Number VCC Range 23A512 1.7V-2.2V 23LC512 2.5V-5.5V Note 1: 16 MHz for E-temp. Temp. Ranges I, E I, E Dual I/O (SDI) Yes Yes Quad I/O (SQI) Yes Yes Max. Clock Frequency 20 MHz(1) 20 MHz(1) Packages SN, ST, P SN, ST, P 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: - Industrial (I): - Extended (E): -40C to +85C -40C to +125C RoHS Compliant Packages 8-Lead PDIP 8-Lead SOIC 8-Lead TSSOP Description The Microchip Technology Inc. 23A512/23LC512 are 512-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. Additionally, SDI (Serial Dual Interface) and SQI (Serial Quad Interface) is supported if your application needs faster data rates. This device also supports unlimited reads and writes to the memory array. Package Types (not to scale) SOIC/TSSOP/PDIP CS 1 SO/SIO1 2 SIO2 3 VSS 4 8 VCC ...