The GR12883 is a 131072 word by 8 bits (128K x 8) non-volatile CMOS Static Ram, fabricated from advanced silicon gate CMOS technology and a high reliability lithium power cell.
The GR12883 is a 128 K × 8 non‑volatile CMOS static RAM fabricated with silicon‑gate technology and powered by an internal lithium cell. It features automatic power‑down, fast 15 µs shutdown, and retains data for up to ten years without external power.
The device is suited for program development, data logging, process control, automation and robotics, and includes detailed timing, pin‑out and electrical specifications. When disposing, do not incinerate or crush; return the part to Greenwich Instruments Ltd.
| Memory capacity | 128K × 8 bits (131072 words) |
|---|---|
| Power‑down time | 15 µs from 5 V to 0 V |
| Data retention time | 10 years (typical) |
| Operating supply voltage (Vdd) | 4.75 V – 5.5 V |
| Dimensions (mm) | 13 × 43.5 × 2.5 |
| Read cycle time | 100 ns |
| Write pulse width | 75 ns |
| Absolute maximum Vdd | 0.3 V – 7.0 V |
It can retain data for up to ten years, limited by the lithium cell life.
The chip powers down from 5 V to 0 V in a maximum of 15 µs.
The package measures 13 mm × 43.5 mm × 2.5 mm.
Do not incinerate or crush; return the device to Greenwich Instruments Ltd. for disposal.