IDT70V657
Description
The IDT70V659/58/57 is a high-speed 128/64/32K x 36 Asynchronous Dual-Port Static RAM. The IDT70V659/58/57 is designed to be used as a stand-alone 4/2/1Mbit Dual-Port RAM or as a combination MASTER/ SLAVE Dual-Port RAM for 72-bit-or-more word system.
Key Features
- True Dual-Port memory cells which allow simultaneous access of the same memory location
- High-speed access - Commercial: 10/12/15ns (max.) - Industrial: 12ns (max.)
- Dual chip enables allow for depth expansion without external logic
- IDT70V659/58/57 easily expands data bus width to 72 bits or more using the Master/Slave select when cascading more than one device
- M/S = VIH for BUSY output flag on Master, M/S = VIL for BUSY input on Slave
- Busy and Interrupt Flags
- On-chip port arbitration logic
- Full on-chip hardware support of semaphore signaling between ports
- Fully asynchronous operation from either port
- Separate byte controls for multiplexed bus and bus matching compatibility
