WCMA1008C1X

The WCMA1008C1X is a high-performance CMOS static RAM organized as 128K words by 8 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. WCMA1008C1X has an automatic power-down feature that reduces power consumption by more than 75% when deselected.

Writing to the WCMA1008C1X is accomplished by taking Chip Enable 1 (CE₁) and Write Enable (WE) inputs LOW and Chip Enable 2 (CE₂) input HIGH. Data on the eight I/O pins (I/O₀ through I/O₇) is then written into the location specified on the address pins (A₀ through A₁₆).

Reading from the WCMA1008C1X is accomplished by taking Chip Enable 1 (CE1) and Output Enable (OE) LOW while forcing Write Enable (WE) and Chip Enable ² (CE2) HIGH. Under these conditions, the contents of the memory location specified by the address pins will appear on the I/O pins.

The eight input/output pins of WCMA1008C1X (I/O₀ through I/O₇) 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 WCMA1008C1X is available in a standard 32-pin 450-mil-wide body width SOIC and 32-pin TSOP type I.