CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
User’s Manual U17446EJ3V1UD
100
Figure 6-15. External Event Counter Configuration Diagram
16-bit timer capture/compare
register 000 (CR000)
16-bit timer counter 00 (TM00)
Internal bus
Match
Clear
OVF00
Note
INTTM000
Noise eliminator
f
XP
Valid edge of TI000
Note
OVF00 is 1 only when 16-bit timer capture/compare register 000 (CR000) is set to FFFFH.
Figure 6-16. External Event Counter Operation Timing (with Rising Edge Specified)
(1) INTTM000 generation timing immediately after operation starts
Counting is started after a valid edge is detected twice.
CR000
INTTM000
0000H 0001H 0002H 0003H
N-2
N-1
N
0000H 0001H 0002H
N
1
2
3
Count starts
TI000 pin input
TM00 count value
(2) INTTM000 generation timing after INTTM000 has been generated twice
CR000
INTTM000
N
0000H 0001H 0002H 0003H 0004H
N-1
N
0000H 0001H 0002H 0003H
N
TI000 pin input
TM00 count value
Caution When reading the external event counter count value, TM00 should be read.
Содержание 78K0S/KB1+
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