Tim1&Tim8 Event Generation Register (Timx_Egr) - ST STM32F40 Series Reference Manual

Advanced-control timers (TIM1&TIM8)
Bit 2 CC2IF: Capture/Compare 2 interrupt flag
Bit 1 CC1IF: Capture/Compare 1 interrupt flag
Bit 0 UIF: Update interrupt flag
14.4.6 TIM1&TIM8 event generation register (TIMx_EGR)
Address offset: 0x14
Reset value: 0x0000
15 14 13
Bits 15:8 Reserved, must be kept at reset value.
Bit 7 BG: Break generation
This bit is set by software in order to generate an event, it is automatically cleared by
hardware.
0: No action
1: A break event is generated. MOE bit is cleared and BIF flag is set. Related interrupt or
DMA transfer can occur if enabled.
403/1422
refer to CC1IF description
If channel CC1 is configured as output:
This flag is set by hardware when the counter matches the compare value, with some
exception in center-aligned mode (refer to the CMS bits in the TIMx_CR1 register
description). It is cleared by software.
0: No match.
1: The content of the counter TIMx_CNT matches the content of the TIMx_CCR1 register.
When the contents of TIMx_CCR1 are greater than the contents of TIMx_ARR, the CC1IF
bit goes high on the counter overflow (in upcounting and up/down-counting modes) or
underflow (in downcounting mode)
If channel CC1 is configured as input:
This bit is set by hardware on a capture. It is cleared by software or by reading the
TIMx_CCR1 register.
0: No input capture occurred
1: The counter value has been captured in TIMx_CCR1 register (An edge has been
detected on IC1 which matches the selected polarity)
This bit is set by hardware on an update event. It is cleared by software.
0: No update occurred.
1: Update interrupt pending. This bit is set by hardware when the registers are updated:
–At overflow or underflow regarding the repetition counter value (update if repetition
counter = 0) and if the UDIS=0 in the TIMx_CR1 register.
–When CNT is reinitialized by software using the UG bit in TIMx_EGR register, if URS=0
and UDIS=0 in the TIMx_CR1 register.
–When CNT is reinitialized by a trigger event (refer to
mode control register
12 11 10 9
Reserved
Doc ID 018909 Rev 4
(TIMx_SMCR)), if URS=0 and UDIS=0 in the TIMx_CR1 register.
8 7 6
BG TG
w w
Section 14.4.3: TIM1&TIM8 slave
5 4 3
COMG CC4G CC3G CC2G
w w w
RM0090
2 1 0
CC1G UG
w w w