GigaDevice Semiconductor GD32F3x0 - Figure 16-48. Timing Chart of up Counting Mode, PSC=0;2; Figure 16-49. Timing Chart of up Counting Mode, Change Timerx_Car on the Go

GD32F3x0 User Manual
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Figure 16-48. Timing chart of up counting mode, PSC=0/2
CEN
PSC_CLK
CNT_REG
94 95 96 97 98 99
0 1 2 3 4
5 6 7
Update event (UPE)
Update interrupt flag (UPIF)
CNT_REG
96
Update event (UPE)
Update interrupt flag (UPIF)
Hardware set
Software clear
Hardware set
PSC = 0
PSC = 2
TIMER_CK
8
PSC_CLK
97
98
99
0
1
Figure 16-49. Timing chart of up counting mode, change TIMERx_CAR on the go
TIMER_CK
CEN
PSC_CLK
CNT_REG
94 95 96 97 98 99
0 1 2 3 4
5 6 7
Update event (UPE)
Update interrupt flag (UPIF)
Auto-reload register
120
99
change CAR Vaule
CNT_REG
113 114 115 116 117 118
119 120 0 1 2
98 99 0
Update event (UPE)
Update interrupt flag (UPIF)
Auto-reload register
120
99
change CAR Vaule
120 99
Auto-reload shadow register
...
Hardware set
Hardware set
Software clear
Hardware set
ARSE = 0
ARSE = 1