R8C-22_1 Datasheet, PDF (110/549 Pages) Renesas Technology Corp – MCU R8C FAMILY / R8C/2x SERIES

R8C/22 Group, R8C/23 Group
Figure 10.13 shows the State Transitions in Power Control Mode.
10. Clock Generation Circuit
State Transition in Power Control Mode
Standard operating mode
Reset
CM14 = 0
OCD2 = 1
FRA01 = 0
Low-speed on-chip oscillator mode
CM14 = 0
OCD2 = 1
FRA01 = 0
CM05 = 0
CM13 = 1
OCD2 = 0
High-speed clock mode
CM05 = 0
CM13 = 1
OCD2 = 0
CM05 = 0
CM13 = 1
OCD2 = 0
CM14 = 0
FRA01 = 0
FRA00 = 1
FRA01 = 1
OCD2 = 1
FRA00 = 1
FRA01 = 1
High-speed on-chip oscillator mode
OCD2 = 1
FRA00 = 1
FRA01 = 1
Interrupt
WAIT instruction
Interrupt
CM10 = 1
Wait mode
CPU operation stops
CM05
: CM0 register
CM13, CM14 : CM1 register
OCD2
: OCD register
FRA00, FRA01 : FRA0 register
Figure 10.13 State Transitions in Power Control Mode
Stop mode
All oscillators stop
Rev.2.00 Aug 20, 2008 Page 90 of 501
REJ09B0251-0200