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UPD784938 Datasheet, PDF (318/733 Pages) NEC – 16-Bit Single-Chip Microcontrollers | |||
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CHAPTER 11 TIMER/EVENT COUNTER 2
Figure 11-7. Basic Operation in 16-Bit Operation Mode (BW2 = 1)
(a) Count started â count disabled â count started
Count clock
TM2W 0H 0H 1H 2H
FFH 100H 101H
0H
0H 1H
CE2
Count started
CE2 â 1
Count stopped
CE2 â 0
(b) When â1â is written to the CE2 bit again after the count starts
Count clock
Count started
CE2 â 1
TM2W 0H
0H 1H 2H 3H 4H 5H 6H
CE2
Count started
CE2 â 1
(c) Operation when TM2W = FFFFH
Count clock
fCLK/8
Rewrite
CE2 â 1
TM2W FFFEH FFFFH 0H 1H
318
OVF2
Cleared by software
OVF2 â 0
Preliminary Userâs Manual U13987EJ1V0UM00
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