M451
May. 4, 2018
Page
180
of
1006
Rev.2.08
M4
51
S
E
RI
E
S
T
E
CH
NICA
L RE
F
E
R
E
NC
E
M
A
NU
A
L
1. LXT (32768 Hz XTL) ON or OFF depends on SW setting in run mode.
2. LIRC (10 kHz OSC) ON or OFF depends on S/W setting in run mode.
3. If TIMER clock source is selected as LIRC/LXT and LIRC/LXT is on.
4. If WDT clock source is selected as LIRC and LIRC is on.
5. If RTC clock source is selected as LXT and LXT is on.
Normal Mode
Idle Mode
Power-Down Mode
HXT (4~20 MHz XTL)
ON
ON
Halt
HIRC (12/16 MHz OSC)
ON
ON
Halt
LXT (32768 Hz XTL)
ON
ON
ON/OFF
1
LIRC (10 kHz OSC)
ON
ON
ON/OFF
2
PLL
ON
ON
Halt
LDO
ON
ON
ON
CPU
ON
Halt
Halt
HCLK/PCLK
ON
ON
Halt
SRAM retention
ON
ON
ON
FLASH
ON
ON
Halt
EBI
ON
ON
Halt
GPIO
ON
ON
Halt
PDMA
ON
ON
Halt
TIMER
ON
ON
ON/OFF
3
PWM
ON
ON
Halt
WDT
ON
ON
ON/OFF
4
WWDT
ON
ON
Halt
RTC
ON
ON
ON/OFF
5
UART
ON
ON
Halt
SC
ON
ON
Halt
I
2
C
ON
ON
Halt
SPI
ON
ON
Halt
USBH
ON
ON
Halt
USBD
ON
ON
Halt
OTG
ON
ON
Halt
CAN
ON
ON
Halt
EADC
ON
ON
Halt
DAC
ON
ON
Halt
ACMP
ON
ON
Halt
