| Device | Function |
| HM628512 | SRAM 512 kByte |
| AT24C64 | serial EEPROM 8kByte |
| CD4536 | Watchdog, Reset Circuit, Real time clock |
| MAX690 | Watchdog, Reset circuit |
| MAX7219 | serial display driver 8*7segment |
| PCF8574 | I/O expander |
| PCF8583 | Real time clock |
| RTC58321 | Real time clock |
| TSM7752 | serial driven display 2*16segment |
| X24C16 | serial I2C-EEPROM series: 24C02 ... 24C256 |