AS7C3256A 3.3V 32K X 8 CMOS SRAM (Common I/O) is a high-performance storage product from Alliance Semiconductor. It has a storage capacity of 32,768 words × 8 bits and supports 10/12/15/20 ns address access time and 5, 6, 7, 8 ns output enable access time. It has low power consumption and a wide working temperature range.
The AS7C3256A is a 3.3 V high‑performance CMOS static RAM organized as 32,768 words × 8 bits. It provides fast address access times (10‑20 ns) and low active power (180 mW max) while supporting standby power as low as 7.2 mW. The device is TTL‑compatible, three‑state and available in standard 28‑pin JEDEC packages.
The datasheet lists detailed electrical specifications, timing diagrams for read and write cycles, AC test conditions, and ordering information for commercial and industrial temperature grades. Package dimensions for SOJ and TSOP1 variants are provided, along with part numbering conventions for lead‑free options.
| Supply voltage | 3.0 V – 3.6 V |
|---|---|
| Address access time | 10 ns – 20 ns |
| Output enable access time | 5 ns – 8 ns |
| Active power consumption | 180 mW max @ 10 ns |
| Standby power consumption | 7.2 mW max |
| Maximum operating current | 50 mA (typical) |
| Maximum standby current | 2 mA |
| Package types | 28‑pin SOJ (300 mil) and 28‑pin TSOP1 (8 × 13.4 mm) |
| Ambient temperature range | -40 °C to +85 °C (industrial), 0 °C to +70 °C (commercial) |
The device operates from 3.0 V to 3.6 V.
Standby power consumption is up to 7.2 mW.
It is offered in a 28‑pin SOJ (300 mil) and a 28‑pin TSOP1 (8 × 13.4 mm) package.
The maximum address access time ranges from 10 ns to 20 ns depending on the part grade.