HD6432621 Hitachi, HD6432621 Datasheet - Page 431

• Manufacturer Part Number: HD6432621
• Description: (HD64F262x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

11.3.3
Sample Setup Procedure for Normal Pulse Output: Figure 11-4 shows a sample procedure for
setting up normal pulse output.
TPU setup
Port and
PPG setup
TPU setup
Normal Pulse Output
Figure 11-4 Setup Procedure for Normal Pulse Output (Example)
Set counting operation
Select interrupt request
Set initial output data
Select TGR functions
Select output trigger
Enable pulse output
Normal PPG output
Compare match?
Set TGRA value
Set next pulse
Set next pulse
Start counter
output data
output data
Yes
No
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[1] Set TIOR to make TGRA an output
[2] Set the PPG output trigger period
[3] Select the counter clock source
[4] Enable the TGIA interrupt in TIER.
[5] Set the initial output values in
[6] Set the DDR and NDER bits for the
[7] Select the TPU compare match
[8] Set the next pulse output values in
[9] Set the CST bit in TSTR to 1 to
[10] At each TGIA interrupt, set the next
compare register (with output
disabled)
with bits TPSC2 to TPSC0 in TCR.
Select the counter clear source
with bits CCLR1 and CCLR0.
The DTC can also be set up to
transfer data to NDR.
PODR.
pins to be used for pulse output to 1.
event to be used as the output
trigger in PCR.
NDR.
start the TCNT counter.
output values in NDR.
387