MKM34Z256VLx7 Bare Metal Software Drivers  R4.1.6
Reference Manual
SIM RTC Clock Sources

Overview

List of clock sources.

Macros

#define SIM_RTCCLK_SRC1
 OSC32KCLK (default)
 
#define SIM_RTCCLK_SRC2
 MCG32KIRCLK.