MCBSTM32EXL Keil, MCBSTM32EXL Datasheet - Page 312
MCBSTM32EXL
Manufacturer Part Number
MCBSTM32EXL
Description
BOARD EVALUATION FOR STM32F103ZE
Manufacturer
Keil
Specifications of MCBSTM32EXL
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Advanced-control timers (TIM1&TIM8)
13.4.13
13.4.14
312/995
15
15
rw
14
14
rw
Bits 15:8 Reserved, always read as 0.
Bits 15:0 CCR1[15:0]: Capture/Compare 1 value
Bits 7:0 REP[7:0]: Repetition counter value
TIM1&TIM8 repetition counter register (TIMx_RCR)
Address offset: 0x30
Reset value: 0x0000
TIM1&TIM8 capture/compare register 1 (TIMx_CCR1)
Address offset: 0x34
Reset value: 0x0000
13
13
rw
These bits allow the user to set-up the update rate of the compare registers (i.e. periodic
transfers from preload to active registers) when preload registers are enable, as well as the
update interrupt generation rate, if this interrupt is enable.
Each time the REP_CNT related downcounter reaches zero, an update event is generated and
it restarts counting from REP value. As REP_CNT is reloaded with REP value only at the
repetition update event U_RC, any write to the TIMx_RCR register is not taken in account until
the next repetition update event.
It means in PWM mode (REP+1) corresponds to:
– the number of PWM periods in edge-aligned mode
– the number of half PWM period in center-aligned mode.
If channel CC1 is configured as output:
CCR1 is the value to be loaded in the actual capture/compare 1 register (preload value).
It is loaded permanently if the preload feature is not selected in the TIMx_CCMR1 register (bit
OC1PE). Else the preload value is copied in the active capture/compare 1 register when an
update event occurs.
The active capture/compare register contains the value to be compared to the counter
TIMx_CNT and signaled on OC1 output.
If channel CC1 is configured as input:
CCR1 is the counter value transferred by the last input capture 1 event (IC1).
12
12
rw
Reserved
Res.
11
11
rw
10
10
rw
rw
9
9
Doc ID 13902 Rev 9
CCR1[15:0]
rw
8
8
rw
rw
7
7
rw
rw
6
6
rw
rw
5
5
rw
rw
4
4
REP[7:0]
rw
rw
3
3
rw
rw
2
2
rw
rw
1
1
RM0008
rw
rw
0
0
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