N64S818HA 64 kb Low Power Serial SRAMs 8 k x 8 Bit Organization Introduction N64S818HA 1 1 CS VCC VCC CS SO SO HOLD HOLD SCK NC NC SCK VSS SI VSS SI TSSOP8 SOIC8 Figure 1. Pin Connections (Top View) Table 1. DEVICE OPTIONS Power Typical Standby Read/Write Part Number Density Supply (V) Speed (MHz) Package Current Operating Current N64S818HAS2 SOIC 64 Kb 1.8 16 200 nA 3 mA 1 Mhz N64S818HAT2 TSSOP Table 2. PIN NAMES Pin Name Pin Function CS Chip Select Input SCK Serial Clock Input SI Serial Data Input SO Serial Data Output HOLD Hold Input NC No Connect V Power CC V Ground SS SCK Clock Circuitry HOLD CS Decode Logic 64 Kb SDI SRAM Array Data In Receiver Data Out SDO Buffer Figure 2. Functional Block Diagram