DocID13902 Rev 15 350/1128
RM0008 Advanced-control timers (TIM1&TIM8)
359
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 GPIOand AFIO registers.
Table 83. Output control bits for complementary OCx and OCxN channels with
break feature
Control bits
Output states
(1)
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
1. When both outputs of a channel are not used (CCxE = CCxNE = 0), the OISx, OISxN, CCxP and CCxNP bits must be kept
cleared.
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