Table 57. Output Control Bits For Complementary Ocx And Ocxn Channels With; Break Feature - ST STM32F205 series Reference Manual

Advanced-control timers (TIM1 and TIM8)

Table 57. Output control bits for complementary OCx and OCxN channels with

Control bits
MOE OSSI OSSR
bit bit bit
0
0
0
0
1 X
1
1
1
1
0
0 X
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.
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 registers.
366/1378

break feature

CCxE CCxNE
bit bit
Output Disabled (not driven by
0 0
the timer), OCx=0, OCx_EN=0
Output Disabled (not driven by
0 1
the timer), OCx=0, OCx_EN=0
OCxREF + Polarity
1 0 OCx=OCxREF xor CCxP,
OCx_EN=1
OCREF + Polarity + dead-time
1 1
OCx_EN=1
Output Disabled (not driven by
0 0 the timer)
OCx=CCxP, OCx_EN=0
Off-State (output enabled with
0 1 inactive state)
OCx=CCxP, OCx_EN=1
OCxREF + Polarity
1 0 OCx=OCxREF xor CCxP,
OCx_EN=1
OCREF + Polarity + dead-time
1 1
OCx_EN=1
X X
Output disabled (not driven by the timer anymore). The output state is
defined by the GPIO controller and can be High, Low or Hi-Z.
0 0
0 1 Off-State (output enabled with inactive state)
Asynchronously: OCx=CCxP, OCx_EN=1, OCxN=CCxNP,
1 0
OCxN_EN=1
Then if the clock is present: OCx=OISx and OCxN=OISxN after a
1 1
dead-time, assuming that OISx and OISxN do not correspond to OCX
and OCxN both in active state
Output states
OCx output state
RM0033 Rev 8
(1)
OCxN output state
Output Disabled (not driven by the
timer), OCxN=0, OCxN_EN=0
OCxREF + Polarity OCxN=OCxREF
xor CCxNP, OCxN_EN=1
Output Disabled (not driven by the
timer)
OCxN=0, OCxN_EN=0
Complementary to OCREF (not
OCREF) + Polarity + dead-time
OCxN_EN=1
Output Disabled (not driven by the
timer)
OCxN=CCxNP, OCxN_EN=0
OCxREF + Polarity
OCxN=OCxREF xor CCxNP,
OCxN_EN=1
Off-State (output enabled with
inactive state)
OCxN=CCxNP, OCxN_EN=1
Complementary to OCREF (not
OCREF) + Polarity + dead-time
OCxN_EN=1
RM0033