RL78/G1H CHAPTER 6 CLOCK GENERATOR
R01UH0575EJ0120 Rev. 1.20 Page 108 of 920
Dec 22, 2016
6.3.5 Oscillation stabilization time select register (OSTS)
This register is used to select the X1 clock oscillation stabilization wait time.
When the X1 clock is made to oscillate by clearing the MSTOP bit to start the X1 oscillation circuit operating,
actual operation is automatically delayed for the time set in the OSTS register.
When switching the CPU clock from the high-speed on-chip oscillator clock or the subsystem clock to the X1
clock, and when using the high-speed on-chip oscillator clock for switching the X1 clock from the oscillating state
to STOP mode, use the oscillation stabilization time counter status register (OSTC) to confirm that the desired
oscillation stabilization time has elapsed after release from the STOP mode. That is, use the OSTC register to
check that the oscillation stabilization time corresponding to its setting has been reached.
The OSTS register can be set by an 8-bit memory manipulation instruction.
Reset signal generation sets the OSTS register to 07H.
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