Datasheet

Section 11 Programmable Pulse Generator (PPG)
Rev.6.00 Mar. 18, 2009 Page 501 of 980
REJ09B0050-0600
11.4.5 Sample Setup Procedure for Non-Overlapping Pulse Output
Figure 11.8 shows a sample procedure for setting up non-overlapping pulse output.
Select TGR functions [1]
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
Set next pulse
output data
Compare match A?
No
Yes
TPU setup
PPG setup
TPU setup
Non-overlapping
pulse output
Set non-overlapping groups
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[1] Set TIOR to make TGRA and
TGRB an output compare registers
(with output disabled)
[2] Set the pulse output trigger period
in TGRB and the non-overlap
period in TGRA.
[3] Select the counter clock source
with bits TPSC2 to TPSC0 in TCR.
Select the counter clear source
with bits CCLR2 to CCLR0.
[4] Enable the TGIA interrupt in TIER.
The DTC or DMAC can also be set
up to transfer data to NDR.
[5] Set the initial output values in
PODR.
[6] Set the DDR and NDER bits for the
pins to be used for pulse output to
1.
[7] Select the TPU compare match
event to be used as the pulse
output trigger in PCR.
[8] In PMR, select the groups that will
operate in non-overlap mode.
[9] Set the next pulse output values in
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.
Figure 11.8 Setup Procedure for Non-Overlapping Pulse Output (Example)