CY62147G30-45ZSXAT is a 4-Mbit (256K × 16) CMOS asynchronous SRAM with embedded ECC for single-bit error correction. It supports byte writes via BLE/BHE and uses CE, OE, and WE control. The 3 V option operates from 2.2 V to 3.6 V over -40°C to 85°C, with 45 ns access time. Standby current is 3.5 µA typical and 8.7 µA max, with automatic/byte power-down. ICC is 20 mA max at f = 22.22 MHz. 44-pin TSOP II.