This document describes the features and characteristics of the 32K/64K x16/18 Synchronous Dual Port Static RAM produced by Cypress Semiconductor Corporation, including True dual-ported memory cells, Flow-Through/Pipelined devices, three operating modes, high-speed clock access, low power consumption, fully synchronous interface, etc.
The Cypress CY7C09279/89 and CY7C09379/89 are high‑speed synchronous dual‑port static RAMs available in 32 K and 64 K densities with 16‑ or 18‑bit data widths. They support true dual‑ported operation, three operating modes (flow‑through, pipelined, burst) and feature low power consumption with active current around 195 mA and standby current as low as 0.05 mA.
The devices are supplied in a 100‑pin Thin Quad Flat Pack (TQFP) and operate over a wide temperature range (commercial 0 °C to +70 °C, industrial –40 °C to +85 °C). Maximum clock frequencies reach 53 MHz in flow‑through mode and 100 MHz in pipelined mode, with typical access times of 6.5 ns (pipelined) and 15 ns (flow‑through). This manual is written in Chinese.
| Memory organization | 32K × 16/18 (CY7C09279/89) or 64K × 16/18 (CY7C09289/89) |
|---|---|
| Maximum access time (pipelined) | 6.5 ns |
| Maximum access time (flow‑through) | 15 ns |
| Typical active operating current | 195 mA |
| Typical standby current (CMOS level) | 0.05 mA |
| Supply voltage range | –0.3 V to +7.0 V DC |
| Operating temperature (commercial) | 0 °C to +70 °C |
| Package type | 100‑pin Thin Quad Plastic Flat Pack (TQFP) |
| Maximum clock frequency (pipelined mode) | 100 MHz |
| Maximum clock frequency (flow‑through mode) | 53 MHz |
The pipelined mode supports up to 100 MHz clock frequency.
Typical active current is 195 mA.
They are supplied in a 100‑pin Thin Quad Flat Pack (TQFP).