CY7C187

The CY7C187 is a high-performance CMOS static RAM orga-nized as 65,536 words x 1 bit. Easy memory expansion is pro-vided by an active LOW Chip Enable (CE</a>) and three-state driv-ers. The CY7C187 has an automatic power-down feature,reducing the power consumption by 56% when deselected.

Writing to the device is accomplished when the Chip Enable(CE</a>) and Write Enable (WE</a>) inputs are both LOW. Data on theinput pin (D_IN) is written into the memory location specified on the address pins (A₀ through A₁₅).

Reading the device is accomplished by taking the Chip Enable (CE</a>) LOW, while Write Enable (WE</a>) remains HIGH. Under these conditions, the contents of the memory location speci-fied on the address pin will appear on the data output (D_OUT)pin.

The output pin stays in high-impedance state when Chip En-able (CE</a>) is HIGH or Write Enable (WE</a>) is LOW.

The CY7C187 utilizes a die coat to insure alpha immunity.