The CY62148ELL-45ZSXIT is a 4-Mbit (512K × 8) CMOS static RAM optimized for low power operation on 4.5 V to 5.5 V supplies. The -45 speed grade supports 45 ns access for fast reads and writes. It offers automatic CE power-down with 2.5 µA typical standby (7 µA max, industrial) and 3.5 mA typical active current at 1 MHz. The ZS option is a 32-pin Pb-free TSOP II for processor memory and buffering.