HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 349

• Manufacturer Part Number: HD6433044
• Description: (HD64 Series) Hitachi Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

1. Set bits TPSC2 to TPSC0 in TCR to select the counter clock source. If an external clock
2. For periodic counting, set CCLR1 and CCLR0 in TCR to have TCNT 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.
5. Set the STR bit to 1 in TSTR to start the timer counter.
Select counter clear source
Select output compare
source is selected, set bits CKEG1 and CKEG0 in TCR to select the desired edge(s) of the
external clock signal.
compare match or GRB compare match.
step 2.
Select counter clock
Type of counting?
Periodic counting
Periodic counter
register function
Counter setup
Start counter
Set period
Yes
Figure 10-14 Counter Setup Procedure (Example)
No
1
2
3
4
5
337
Free-running counting
Free-running counter
Start counter
5