HD6413008F RENESAS [Renesas Technology Corp], HD6413008F Datasheet - Page 254

• Manufacturer Part Number: HD6413008F
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series
• Manufacturer: RENESAS [Renesas Technology Corp]

8. 16-Bit Timer
• Sample setup procedure for counter
1. Set bits TPSC2 to TPSC0 in 16TCR to select the counter clock source. If an external clock
2. For periodic counting, set CCLR1 and CCLR0 in 16TCR to have 16TCNT cleared at GRA
3. Set TIOR to select the output compare function of GRA or GRB, whichever was selected in
4. Write the count period in GRA or GRB, whichever was selected in step 2.
Rev.4.00 Aug. 20, 2007 Page 210 of 638
REJ09B0395-0400
Figure 8.12 shows a sample procedure for setting up a counter.
source is selected, set bits CKEG1 and CKEG0 in 16TCR to select the desired edge(s) of the
external clock signal.
compare match or GRB compare match.
step 2.
Select counter clear source
Select output compare
Select counter clock
Periodic counting
Periodic counter
Count operation
register function
Counter setup
Start counter
Set period
Figure 8.12 Counter Setup Procedure (Example)
Yes
No
1
2
3
4
5
Free-running counting
Free-running counter
Start counter
5