| Компонент | Описание | Производитель | |
| DS1643P-100 | Nonvolatile Timekeeping RAMs |
Maxim Integrated Products |
|
| DS1643P-100 | Nonvolatile Timekeeping RAM |
Dallas Semiconductor |
|
| DS1643P-100 | Nonvolatile Timekeeping RAMs |
Maxim Integrated Products |
|
| DS1643P-100+ | Nonvolatile Timekeeping RAMs |
Maxim Integrated Products |