The CY7C135 and CY7C1342 are high-speed CMOS 4K x 8 dual-port static RAMs. The CY7C1342 includes semaphores that provide a means to allocate portions of the dual-port RAM or any shared resource. Two ports are provided permitting independent, asynchronous access for reads and writes to any location in memory.
The document describes the CY7C135 and CY7C1342, which are high-speed CMOS 4K x 8 dual-port static RAMs. These devices feature true dual-ported memory cells allowing simultaneous reads of the same location and fully asynchronous operation. The CY7C1342 variant includes semaphores to permit software handshaking between ports for resource arbitration.
| Organization | 4K x 8 |
|---|---|
| Technology | 0.65-micron CMOS |
| Maximum Access Time (15ns variant) | 15 ns |
| Package Type | 52-pin PLCC |
The CY7C1342 includes semaphores that provide a means to allocate portions of the dual-port RAM or any shared resource, while the CY7C135 does not.
Yes, true dual-ported memory cells allow simultaneous reads of the same memory location.