CY7C139 Overview
The CY7C138 and CY7C139 are high-speed CMOS 4K x 8 and 4K x 9 dual-port static RAMs. Various arbitration schemes Logic BlockDiagram R/WL CEL OEL 4K x 8/9 Dual-Port Static RAM with Sem, Int, Busy are included on the.
CY7C139 Key Features
- True Dual-Ported memory cells that allow simultaneous reads of the same memory location
- 4K x 8 organization (CY7C138)
- 4K x 9 organization (CY7C139)
- 0.65-micron CMOS for optimum speed/power
- High-speed access: 15 ns
- Low operating power: ICC = 160 mA (max.)
- Fully asynchronous operation
- Automatic power-down
- TTL patible
- Expandable data bus to 32/36 bits or more using