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12.3.4
Non-Overlapping Pulse Output
Sample Setup Procedure for Non-Overlapping Pulse Output: Figure 12-6 shows a sample
procedure for setting up non-overlapping pulse output.
TPU setup
PPG setup
Set non-overlapping groups
TPU setup
Figure 12-6 Setup Procedure for Non-Overlapping Pulse Output (Example)
Non-overlapping
PPG output
Select TGR functions
Set TGR values
Set counting operation
Select interrupt request
Set initial output data
Enable pulse output
Select output trigger
Set next pulse
output data
Start counter
Compare match?
Yes
Set next pulse
output data
[1] Set TIOR to make TGRA and
TGRB an output compare registers
(with output disabled)
[1]
[2] Set the pulse output trigger period
in TGRB and the non-overlap
[2]
margin in TGRA.
[3]
[3] Select the counter clock source
with bits TPSC2 to TPSC0 in TCR.
[4]
Select the counter clear source
with bits CCLR1 and CCLR0.
[5]
[4] Enable the TGIA interrupt in TIER.
The DTC or DMAC can also be set
[6]
up to transfer data to NDR.
[7]
[5] Set the initial output values in
PODR.
[8]
[6] Set the DDR and NDER bits for the
pins to be used for pulse output to
[9]
1.
[7] Select the TPU compare match
[10]
event to be used as the pulse
output trigger in PCR.
No
[8] In PMR, select the groups that will
operate in non-overlap mode.
[9] Set the next pulse output values in
[11]
NDR.
[10] Set the CST bit in TSTR to 1 to
start the TCNT counter.
[11] At each TGIA interrupt, set the next
output values in NDR.
513
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