M4T28-BR12SH_03 и другие
| Компонент | Описание | Производитель | |
| M4T28-BR12SH_03 | TIMEKEEPER SNAPHAT (BATTERY & CRYSTAL) |
STMicroelectronics |
 |
| M4T28-BR12SH_08 | TIMEKEEPER^ SNAPHAT^ (battery and crystal) |
STMicroelectronics |
|