CY7C188

The CY7C188 is a high-performance CMOS static RAM organized as 32,768 words by 9 bits. Easy memory expansion is provided by an active-LOW chip enable (CE₁), an active-HIGH chip enable (CE₂), an active-LOW output enable (OE), and three-state drivers. The  CY7C188  has an automatic power-down feature that reduces power consumption by more than 75% when deselected.

Writing to the CY7C188 is accomplished by taking CE₁ and write enable (WE) inputs LOW and CE₂ input HIGH. Data on the nine I/O pins (I/O_o I/O₈) is then written into the location specified on the address pins (A₀ A₁₄).

Reading from the  CY7C188  is accomplished by taking CE₁ and OE LOW while forcing WE and CE₂ HIGH. Under these conditions, the contents of the memory location specified by the address pins will appear on the I/O pins.

The nine input/output pins (I/O₀ I/O₈) of  CY7C188 are placed in a high-impedance state when the device is deselected (CE₁ HIGH or CE₂ LOW), the outputs are disabled (OE HIGH), or during a write operation (CE₁ LOW, CE₂ HIGH, and WE LOW).

The CY7C188 is available in standard 300-mil-wide SOJs.