Microchip Technology 23A640
the 23A640/ 23K640 devices.FEATURES
● Maximum Clock 20 MHz● Low-Power CMOS Technology: - Read current: 3 mA at 1 MHz - Standby Current: 4 A maximum at +85°C
● 8,192 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
● High Reliability
● Temperature Ranges Supported: - Industrial (I): - Extended (E): -40C to +85C -40C to +125C
● Automotive AEC-Q100 Qualified
● RoHS Compliant, Halogen Free Packages
● 8-Lead PDIP
● 8-Lead SOIC
● 8-Lead TSSOP PIN FUNCTION TABLE Name Function CS SO VSS SI SCK HOLD VCC Chip Select Input Serial Data Output Ground Serial Data Input Serial Clock Input Hold Input Supply Voltage Temp. Ranges I, E I Packages P, SN, ST P, SN, ST
DESCRIPTION
The Microchip Technology Inc. 23X640 is a 64-Kbit Serial SRAM device. 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.