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AT32F413
Series Reference Manual
2022.06.27
Page 59
Rev 2.00
0: Disabled
1: Enabled
Bit 18
USART3EN
0x0
rw
USART3 clock enable
0: Disabled
1: Enabled
Bit 17
USART2EN
0x0
rw
USART2 clock enable
0: Disabled
1: Enabled
Bit 16: 15 Reserved
0x0
resd
Kept at its default value.
Bit 14
SPI2EN
0x0
rw
SPI2 clock enable
0: Disabled
1: Enabled
Bit 13: 12 Reserved
0x0
resd
Kept at its default value.
Bit 11
WWDTEN
0x0
rw
WWDT clock enable
0: Disabled
1: Enabled
Bit 10: 4 Reserved
0x0
resd
Kept its default value.
Bit 3
TMR5EN
0x0
rw
TMR5 clock enable
0: Disabled
1: Enabled
Bit 2
TMR4EN
0x0
rw
TMR4 clock enable
0: Disabled
1: Enabled
Bit 1
TMR3EN
0x0
rw
TMR3 clock enable
0: Disabled
1: Enabled
Bit 0
TMR2EN
0x0
rw
TMR2 clock enable
0: Disabled
1: Enabled
4.3.9
Battery powered domain control register ( CRM_BPDC)
Access: 0 to 3 wait states. Wait states are inserted in the case of consecutive accesses to this register.
Note: LEXTEN, LEXTBYPS, RTCSEL, and RTCEN bits of the battery powered domain control register
(CRM_BDC) are in the battery powered domain. As a result, these bits are write protected after
reset, and can only be modified by setting the BPWEN bit in the power control register
(PWR_CTRL). These bits could be reset only by battery powered domain reset. Any internal or external
Reset does not affect these bits.
Bit
Name
Reset value
Type
Description
Bit 31: 17 Reserved
0x0000
resd
Kept at its default value.
Bit 16
BPDRST
0x0
rw
Battery powered domain software reset
0: No effect
1: Reset
Bit 15
RTCEN
0x0
rw
RTC clock enable
Set and cleared by software.
0: Disabled
1: Enabled
Bit 14: 10 Reserved
0x00
resd
Kept at its default value.
Bit 9: 8
RTCSEL
0x0
rw
RTC clock selection
Once the RTC clock source is selected, it cannot be
changed until the BPDRST bit is reset.
00: No clock
01: LEXT