Example Of Controlling Internal High-Speed Oscillation Clock - Renesas R7F0C011B User Manual

R7F0C011B, R7F0C012B, R7F0C013B

5.6.2 Example of controlling internal high-speed oscillation clock

The following describes examples of clock setting procedures for the following cases.
(1) When restarting oscillation of the internal high-speed oscillation clock
(2) When using internal high-speed oscillation clock as CPU clock, and internal high-speed oscillation clock or high-
speed system clock as peripheral hardware clock
(3) When stopping the internal high-speed oscillation clock
(1) Example of setting procedure when restarting oscillation of the internal high-speed oscillation clock
<1> Setting restart of oscillation of the internal high-speed oscillation clock (RCM register)
When RSTOP is cleared to 0, the internal high-speed oscillation clock starts operating.
<2> Waiting for the oscillation accuracy stabilization time of internal high-speed oscillation clock (RCM register)
Wait until RSTS is set to 1
Notes 1. After a reset release, the internal high-speed oscillator automatically starts oscillating and the internal
high-speed oscillation clock is selected as the CPU clock.
2. This wait time is not necessary if high accuracy is not necessary for the CPU clock and peripheral
hardware clock.
R01UH0408EJ0001 Rev.0.01
Sep 25, 2012
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CHAPTER 5 CLOCK GENERATOR
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