The document describes the features of a product from IDT (Integrated Device Technology). The product is a dual-port memory chip that allows simultaneous access to the same memory location. It offers high-speed data access and selectable output modes. The chip supports counter enable and repeat features, and allows depth expansion without additional logic through dual chip enables. It operates synchronously on both ports, with fast cycle time and self-timed write capability. The chip also has separate byte controls for multiplexed bus and bus matching compatibility. It is compatible with low voltage differential signaling and operates in an industrial temperature range.
The IDT70V3319/99S is a high-speed 256/128K x 18 bits synchronous dual-port RAM designed for simultaneous access of any address from both ports. It features true dual-port memory cells, separate byte controls for multiplexed buses, and supports selectable pipelined or flow-through output modes. The device offers commercial 3.6ns (166MHz) or 4.2ns (133MHz) cycle times and industrial 4.2ns (133MHz) cycle times.
| Memory Capacity | 256/128K x 18 |
|---|---|
| Max Operating Frequency | 166MHz |
| Min Cycle Time (Commercial) | 3.6ns |
| Min Cycle Time (Industrial) | 4.2ns |
| Setup Time to Clock | 1.7ns |
| Hold Time | 0.5ns |
| Power Supply Voltage | 3.3V or 2.5V |
| Temperature Range (Industrial) | -40°C to +85°C |
Yes, the device supports an operating voltage of either 3.3V or 2.5V on one or both ports, controllable by the OPT pins.
No, due to limited pin count, JTAG is not supported on the 128-pin TQFP package.
The device offers selectable Pipelined or Flow-Through output modes, though the PL/FT option is not supported for the 128-pin TQFP package.