RM0091 General-purpose timers (TIM2 and TIM3)
Doc ID 018940 Rev 1 351/742
16.4.19 TIM2 and TIM3 register map
TIM2 and TIM3 registers are mapped as described in the table below:
Table 50. TIM2 and TIM3 register map and reset values
Offset Register
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x00
TIM2_CR1 and
TIM3_CR1
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
CKD
[1:0]
ARPE
CMS
[1:0]
DIR
OPM
URS
UDIS
CEN
Reset value 0000000000
0x04
TIM2_CR2 and
TIM3_CR2
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
TI1S
MMS[2:0]
CCDS
Res.
Res.
Res.
Reset value 00000
0x08
TIM2_SMCR and
TIM3_SMCR
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
ETP
ECE
ETPS
[1:0]
ETF[3:0]
MSM
TS[2:0]
Res.
SMS[2:0]
Reset value 000000000000 000
0x0C
TIM2_DIER and
TIM3_DIER
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
TDE
Res.
CC4DE
CC3DE
CC2DE
CC1DE
UDE
Res.
TIE
Res.
CC4IE
CC3IE
CC2IE
CC1IE
UIE
Reset value 0
00000 0
00000
0x10
TIM2_SR and
TIM3_SR
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
CC4OF
CC3OF
CC2OF
CC1OF
Res.
Res.
TIF
Res.
CC4IF
CC3IF
CC2IF
CC1IF
UIF
Reset value 0000 0 00000
0x14
TIM2_EGR and
TIM3_EGR
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
TG
Res.
CC4G
CC3G
CC2G
CC1G
UG
Reset value 0 00000
0x18
TIM2_CCMR1
and
TIM3_CCMR1
Output compare
mode
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
OC2CE
OC2M
[2:0]
OC2PE
OC2FE
CC2S
[1:0]
OC1CE
OC1M
[2:0]
OC1PE
OC1FE
CC1S
[1:0]
Reset value 0000000000000000
TIM2_CCMR1
and
TIM3_CCMR1
Input capture
mode
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
IC2F[3:0]
IC2
PSC
[1:0]
CC2S
[1:0]
IC1F[3:0]
IC1
PSC
[1:0]
CC1S
[1:0]
Reset value 0000000000000000
0x1C
TIM2_CCMR2
and
TIM3_CCMR2
Output compare
mode
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
O24CE
OC4M
[2:0]
OC4PE
OC4FE
CC4S
[1:0]
OC3CE
OC3M
[2:0]
OC3PE
OC3FE
CC3S
[1:0]
Reset value 0000000000000000
TIM2_CCMR2
and
TIM3_CCMR2
Input capture
mode
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
IC4F[3:0]
IC4
PSC
[1:0]
CC4S
[1:0]
IC3F[3:0]
IC3
PSC
[1:0]
CC3S
[1:0]
Reset value 0000000000000000
0x20
TIM2_CCER and
TIM3_CCER
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
CC4NP
Res.
CC4P
CC4E
CC3NP
Res.
CC3P
CC3E
CC2NP
Res.
CC2P
CC2E
CC1NP
Res.
CC1P
CC1E
Reset value 0 000 000 000 00
0x24
TIM2_CNT and
TIM3_CNT
CNT[31:16]
(TIM2 only)
CNT[15:0]
Reset value 00000000000000000000000000000000
0x28
TIM2_PSC and
TIM3_PSC
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
PSC[15:0]
Reset value 0000000000000000
0x2C
TIM2_ARR and
TIM3_ARR
ARR[31:16]
(TIM2 only)
ARR[15:0]
Reset value 00000000000000000000000000000000
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