Figure 101. Dead-Time Insertion Performed For Complementary Outputs - Holtek HT32F12345 User Manual

32-Bit Arm ® Cortex ® -M3 MCU
HT32F12345
Dead Time Generator
An an 8-bit dead time generator function is included for channels 0 ~ 2. The dead time insertion
is enabled by setting both the CHxE and CHxNE bits. The relationship between the CHxO and
CHxNO signals with respect to the CHxOREF signal is as follows:
▄
The CHxO signal is the same as the CHxOREF signal except for the rising edge which is delayed
with a dead time relative to the reference signal rising edge.
▄
The CHxNO is the opposite of the CHxOREF signal except for the rising edge which is delayed
with a dead time relative to the reference signal falling edge.
CHxOREF
CHxO
CHxNO
When dead-time greater than negative pulse
CHxO
CHxNO
CHxOCREF
CHxOC
CHxNOC
When dead-time is greater than positive pulse
CHxOC
CHxNOC

Figure 101. Dead-time Insertion Performed for Complementary Outputs

If the delay is greater than the width of the active output of CHxO or CHxNO, then the
corresponding PWM pulses will not be generated.
Break Function
The MCTM includes break function and maximum two input signals for MCTM break. The
MTn_BRK0 is default function and from external MTn_BRK pin. But the second break signal
MTn_BRK1 is share with the MTn_ETI pin and default is disabled. It can set the BRK1SEL bit
in CHBRKCTR register to select the MTn_ETI pin for extra break signal MTn_BRK1. The detail
block diagram is shown as below figure.
Rev. 1.10
CHxP=0, CHxNP=0, CHMOE=1,CHxE=1, CHxNE=1
Dead-time
CHxP=0, CHxNP=0, CHxMOE=1,CHxE=1, CHxNE=1
dead-time
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November 28, 2018