| Manufacturer | Part Number | Description |
|---|---|---|
| Greenwich | GR3281H | NON-VOLATILE RAM |
| Greenwich | GR3281 | NON-VOLATILE RAM |
| Greenwich | GR12883 | NON-VOLATILE RAM |
| Greenwich | GR281 | 2048 x 8-Bit Non-Volatile CMOS Static RAM |
| Greenwich Instruments | GR281 | Non Volatile Memory |
| Greenwich Instruments | GR881 | NON Voltage Memory |
