Infineon SRAM, CY62147EV30LL-45BVXI- 4Mbit

The Cypress Semiconductor CY62147EV30 series is a high performance CMOS static RAM organized as 256K words by 16 bits. This device features advanced circuit design to provide ultra low active current. This is ideal for providing more battery life in portable applications. The device also has an automatic power down feature that significantly reduces power consumption.

Very high speed typically of 45 ns
Ultra low standby power
Automatic power down when deselected
Complementary metal oxide semiconductor (CMOS) for optimum speed and power