upd78f0114m6gb-8es Renesas Electronics Corporation., upd78f0114m6gb-8es Datasheet - Page 123

• Manufacturer Part Number: upd78f0114m6gb-8es
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

5.8.2 Switching from X1 input clock to Ring-OSC clock
Note Required only when “can be stopped by software” is selected for Ring-OSC by a mask option.
clock operation
clock operation
Ring-OSC
X1 input
Figure 5-15. Switching from X1 Input Clock to Ring-OSC Clock (Flowchart)
Register setting
clock operation
in X1 input
RSTOP = 0
Yes: RSTOP = 1
CHAPTER 5 CLOCK GENERATOR
User’s Manual U16227EJ3V0UD
Ring-OSC clock operation
PCC.7 (MCC) = 0
PCC.4 (CSS) = 0
(RSTOP) = 1?
MCM = 03H
MCM0 ← 0
RCM.0
No: RSTOP = 0
Note
; X1 oscillation
; X1 input clock or Ring-OSC clock
; X1 input clock operation
; Ring-OSC oscillating?
; Ring-OSC clock operation
MCM.1 (MCS) is changed from 1 to 0
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