CY62256V is a 256K (32K x 8) Static RAM from Cypress Semiconductor Corporation, featuring low working voltage, low power consumption and easy expansion.
The CY62256V family is a high‑performance CMOS static RAM organized as 32K × 8 bits. It offers low active and standby power, automatic power‑down, and TTL‑compatible I/O. The device is available in several temperature grades (commercial, industrial, automotive) and in standard 28‑lead SOIC and TSOP packages.
This datasheet details the functional description, pin definitions, maximum ratings, electrical characteristics, switching timings, data‑retention behavior, and thermal resistance. It also includes typical application notes and reference waveforms for read and write cycles.
| Temperature range (Commercial) | 0 °C to 70 °C |
|---|---|
| Temperature range (Industrial) | -40 °C to 85 °C |
| Temperature range (Automotive) | -40 °C to 125 °C |
| Access speed | 70 ns and 100 ns |
| Supply voltage (CY62256V) | 2.7 V‑3.6 V |
| Supply voltage (CY62256V25) | 2.3 V‑2.7 V |
| Power‑down reduction | >99 % when deselected |
The device is offered in three grades: Commercial (0 °C to 70 °C), Industrial (‑40 °C to 85 °C), and Automotive (‑40 °C to 125 °C).
CY62256V operates from 2.7 V to 3.6 V, while the CY62256V25 version operates from 2.3 V to 2.7 V.
The automatic power‑down feature reduces power consumption by more than 99 % when the chip is not selected.