| Компонент | Описание | Производитель | |
| DS3231M_11 | 5ppm, I2C Real-Time Clock Battery Backup for Continuous Timekeeping |
Maxim Integrated Products |
|
| DS3231M_1112 | 5ppm, I2C Real-Time Clock |
Maxim Integrated Products |
|
| DS3231M_12 | a5ppm, I2C Real-Time Clock |
Maxim Integrated Products |