RTC (AxelUltra)

From DAVE Developer's Wiki
Jump to: navigation, search
Info Box
Axel-04.png Applies to Axel Ultra

On-board RTC

An on-board Maxim Integrated DS3232 device provides a very accurate, temperature-compensated real-time clock (RTC) resource with:

  • Temperature-compensated crystal oscillator
  • Date, time and calendar
  • Alarm capability
  • Backup power from external battery
  • ±3.5ppm accuracy from -40°C to +85°C
  • 236 Bytes of Battery-Backed SRAM
  • I²C Interface

Backup power is provided through the RTC_VBAT (J1.124) signal. If not used, RTC_VBAT must be externally connected to VCC.

For a detailed description of RTC characteristics, please refer to the DS3232 datasheet.