Datasheet
Section 6 Power-Down Modes 
    Rev. 3.00 Mar. 15, 2006 Page 83 of 526 
   REJ09B0060-0300 
Table 6.3  Internal State in Each Operating Mode 
Function 
Active Mode 
Sleep Mode 
Subactive 
Mode 
Subsleep 
Mode 
Standby 
Mode 
System clock oscillator  Functioning  Functioning  Halted  Halted  Halted 
Subclock oscillator  Functioning  Functioning Functioning Functioning Functioning 
Instructions Functioning Halted  Functioning Halted  Halted CPU 
operations 
Registers Functioning Retained Functioning Retained  Retained 
RAM Functioning Retained Functioning Retained  Retained 
IO ports  Functioning  Retained  Functioning Retained  Register 
contents are 
retained, but 
output is the 
high-
impedance 
state. 
IRQ3 to IRQ0  Functioning  Functioning Functioning Functioning Functioning External 
interrupts 
WKP5 to 
WKP0 
Functioning Functioning Functioning Functioning Functioning 
RTC Functioning Functioning  Functioning if the timekeeping time-base 
function is selected, and retained if not selected
Peripheral 
functions 
Timer V  Functioning  Functioning  Reset  Reset  Reset 
Watchdog 
timer 
Functioning  Functioning  Retained (functioning if the internal oscillator is 
selected as a count clock*) 
SCI3, SCI3_2, 
SCI3_3 
Functioning Functioning Reset  Reset  Reset 
 IIC2 Functioning Functioning Retained*  Retained Retained 
 Timer B1 Functioning Functioning Retained* Retained  Retained 
 Timer Z Functioning Functioning Retained* Retained  Retained 
 Timer W Functioning Functioning  Retained (the counter is 
incremented by a subclock if 
the internal clock φ is selected 
as a count clock*) 
Retained 
 A/D converter Functioning Functioning Reset Reset Reset 
Note: *  Registers can be read or written in subactive mode. 










