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AT32F413
Series Reference Manual
2022.06.27
Page 58
Rev 2.00
Bit 6
GPIOEEN
0x0
rw
GPIOE clock enable
0: Disabled
1: Enabled
Bit 5
GPIODEN
0x0
rw
GPIOD clock enable
0: Disabled
1: Enabled
Bit 4
GPIOCEN
0x0
rw
GPIOC clock enable
0: Disabled
1: Enabled
Bit 3
GPIOBEN
0x0
rw
GPIOB clock enable
0: Disabled
1: Enabled
Bit 2
GPIOAEN
0x0
rw
GPIOA clock enable
0: Disabled
1: Enabled
Bit 1
Reserved
0x0
rw
Keep at its default value.
Bit 0
IOMUXEN
0x0
rw
IOMUX clock enable
0: Disabled
1: Enabled
4.3.8
APB1 peripheral clock enable register (CRM_AHB1EN)
Accessible: no-wait state in most cases, word, half-word and byte.
When accessing to peripherals on APB2 bus, wait states are inserted until the completion of the
peripheral access on APB2.
Note: When a peripheral clock is disabled, reading this register by software always returns 0x0.
Bit
Name
Reset value
Type
Description
Bit 31
CAN2EN
0x0
rw
CAN2 clock enable
0: Disabled
1: Enabled
Bit 30: 29 Reserved
0x0
resd
Kept at its default value.
Bit 28
PWCEN
0x0
rw
Power control clock enable
0: Disabled
1: Enabled
Bit 27
BPREN
0x0
rw
BPR clock enable
0: Disabled
1: Enabled
Bit 26
Reserved
0x0
resd
Kept at its default value.
Bit 25
CAN1EN
0x0
rw
CAN1 clock enable
0: Disabled
1: Enabled
Bit 24
Reserved
0x0
resd
Kept its default value.
Bit 23
USBEN
0x0
rw
USB clock enable
0: Disabled
1: Enabled
Bit 22
I2C2EN
0x0
rw
I2C2 clock enable
0: Disabled
1: Enabled
Bit 21
I2C1EN
0x0
rw
I2C1 clock enable
0: Disabled
1: Enabled
Bit 20
UART5EN
0x0
rw
UART5 clock enable
0: Disabled
1: Enabled
Bit 19
UART4EN
0x0
rw
UART4 clock enable