RM0008 Advanced-control timers (TIM1&TIM8)
Doc ID 13902 Rev 12 337/1096
Note: The state of the external I/O pins connected to the complementary OCx and OCxN
channels depends on the OCx and OCxN channel state and the GPIO and AFIO registers.
Table 83. Output control bits for complementary OCx and OCxN channels with
break feature
Control bits
Output states
(1)
1. When both outputs of a channel are not used (CCxE = CCxNE = 0), the OISx, OISxN, CCxP and CCxNP
bits must be kept cleared.
MOE
bit
OSSI
bit
OSSR
bit
CCxE
bit
CCxNE
bit
OCx output state OCxN output state
1X
00 0
Output Disabled (not
driven by the timer)
OCx=0, OCx_EN=0
Output Disabled (not driven by
the timer)
OCxN=0, OCxN_EN=0
00 1
Output Disabled (not
driven by the timer)
OCx=0, OCx_EN=0
OCxREF + Polarity
OCxN=OCxREF xor CCxNP,
OCxN_EN=1
01 0
OCxREF + Polarity
OCx=OCxREF xor CCxP,
OCx_EN=1
Output Disabled (not driven by
the timer)
OCxN=0, OCxN_EN=0
01 1
OCREF + Polarity + dead-
time
OCx_EN=1
Complementary to OCREF (not
OCREF) + Polarity + dead-time
OCxN_EN=1
10 0
Output Disabled (not
driven by the timer)
OCx=CCxP, OCx_EN=0
Output Disabled (not driven by
the timer)
OCxN=CCxNP, OCxN_EN=0
10 1
Off-State (output enabled
with inactive state)
OCx=CCxP, OCx_EN=1
OCxREF + Polarity
OCxN=OCxREF xor CCxNP,
OCxN_EN=1
11 0
OCxREF + Polarity
OCx=OCxREF xor CCxP,
OCx_EN=1
Off-State (output enabled with
inactive state)
OCxN=CCxNP, OCxN_EN=1
11 1
OCREF + Polarity + dead-
time
OCx_EN=1
Complementary to OCREF (not
OCREF) + Polarity + dead-time
OCxN_EN=1
0
0
X
00
Output Disabled (not driven by the timer)
Asynchronously: OCx=CCxP, OCx_EN=0, OCxN=CCxNP,
OCxN_EN=0
Then if the clock is present: OCx=OISx and OCxN=OISxN
after a dead-time, assuming that OISx and OISxN do not
correspond to OCX and OCxN both in active state.
001
010
011
100
1 0 1 Off-State (output enabled with inactive state)
Asynchronously: OCx=CCxP, OCx_EN=1, OCxN=CCxNP,
OCxN_EN=1
Then if the clock is present: OCx=OISx and OCxN=OISxN
after a dead-time, assuming that OISx and OISxN do not
correspond to OCX and OCxN both in active state
110
111
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