upd78f0114hgb-8es-a Renesas Electronics Corporation., upd78f0114hgb-8es-a Datasheet - Page 121

• Manufacturer Part Number: upd78f0114hgb-8es-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

5.8.2 Switching from high-speed system clock to internal oscillation clock
High-speed system
Internal oscillation
clock operation
clock operation
Note Required only when “can be stopped by software” is selected for internal oscillator by the option byte.
Figure 5-17. Switching from High-Speed System Clock to Internal Oscillation Clock (Flowchart)
in high-speed system
Register setting
clock operation
RSTOP = 0
Yes: RSTOP = 1
CHAPTER 5 CLOCK GENERATOR
Internal oscillation clock operation
User’s Manual U16961EJ4V0UD
PCC.7 (MCC) = 0
PCC.4 (CSS) = 0
(RSTOP) = 1?
MCM = 03H
MCM.0
RCM.0
No: RSTOP = 0
Note
0
; High-speed system clock oscillation
; High-speed system clock or Internal oscillation clock
; High-speed system clock operation
; Internal oscillator oscillating?
; Internal oscillation clock operation
MCM.1 (MCS) is changed from 1 to 0
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