CHAPTER 19 STANDBY FUNCTION
User’s Manual U16896EJ2V0UD
583
(2) Releasing STOP mode by reset
The same operation as the normal reset operation is performed.
Table 19-7. Operation Status in STOP Mode
When CPU Is Operating with Main Clock
Setting of STOP Mode
Item
When Subclock Is Not Used
When Subclock Is Used
CPU Stops
operation
ROM correction
Stops operation
Main clock oscillator
Oscillation stops
Subclock oscillator
−
Oscillation enabled
Internal oscillator (f
R
) Operable
Interrupt controller
Stops operation
16-bit timer (TMP0)
Stops operation
16-bit timer (TM01)
Stops operation
Operable when INTWT is selected as
count clock and f
XT
is selected as count
clock of WT
8-bit timers (TM50, TM51)
Operable when TI5m is selected as count
clock
Operable when TI5m is selected as count
clock or when INTTM010 is selected as
count clock and TM01 is enabled in STOP
mode
Timer H (TMH0)
Stops operation
Timer H (TMH1)
Operable when f
R
/2048 is selected as count clock
Watch timer
Stops operation
Operable when f
XT
is selected as count clock
Watchdog timer 1
Stops operation
Watchdog timer 2
Operable when f
R
/8 is selected as count
clock
Operable
CSI00, CSI01
Operable when SCK0m input clock is selected as operation clock
I
2
C0
Note 1
Stops
operation
UART0
Operable when ASCK0 is selected as count clock
Serial interface
UART1 Stops
operation
Key interrupt function
Operable
A/D converter
Stops operation
Note 2
Real-time output
Operable when INTTM5m is selected as real-time output trigger and TM5m is enabled in
STOP mode.
However, the RTBH0 and RTBL0 registers cannot be updated because the CPU is
stopped.
Clock monitor (CLM)
Stops operation
Power-on-clear (POC)
Operable
Low-voltage detection (LVI)
Operable
Port function
Retains status before STOP mode was set.
Internal data
The CPU registers, statuses, data, and all other internal data such as the contents of the
internal RAM are retained as they were before the STOP mode was set.
Notes 1.
Only in the
μ
PD703302Y, 70F3302Y
2.
Set the ADM.ADCS and ADM.ADCS2 bits to 00B.
Remark
m = 0, 1
<R>
<R>