CY7C149 Datasheet | Cypress

CY7C148 CY7C149 1Kx4 Static RAM Features - - - - Automatic power-down when deselected (7C148) CMOS for optimum speed/power 25-ns access time Low active power - 440 mW (mercial) sion is provided by an active LOW chip select (CS) input and three-state outputs. The CY7C148 remains in a low-power mode as long as the device remains unselected; i.e., (CS) is HIGH, thus reducing the average power requirements of the device. The chip select (CS) of the CY7C149 does not affect the power dissipation of the device. Writing to the device is acplished when the chip select (CS) and write enable (WE) inputs are both LOW. Data on the I/O pins (I/O 0 through I/O 3) is written into the memory...