R2221 Series
| Mfr.Part# | Description | Manufacturer | In Stock | Operation |
| R2221T-E2-F | SERIAL INTERFACE REAL TIME CLOCK | Nisshinbo Micro Devices Inc. | 6827 |
|
| R2221L-E2 | 2-WIRE SERIAL INTERFACE REAL TIM | Nisshinbo Micro Devices Inc. | 6940 |
|