131
CHAPTER 9 8-BIT TIMER/EVENT COUNTERS 2, 3 TM2, TM3
(b) Operation by change of CRn
Figure 9-9. Timing of Operation by Change of CRn
(i)
Change of CRn value to N to M before overflow of TMn
Count clock
TMn
CRn
TCEn
INTTMn
TIOn
CRn transition (N
→
M)
N N+1 N+2
FFH 00H 01H
M M+1 M+2
FFH 00H 01H 02H
M M+1 M+2
N
02H
M
H
(ii) Change of CRn value to N to M after overflow of TMn
Count clock
TMn
CRn
TCEn
INTTMn
TIOn
N
N+1 N+2
FFH 00H 01H
N
N+1 N+2
FFH 00H 01H 02H
N
02H
N
H
03H
M
M M+1 M+2
CRn transition (N
→
M)
(iii) Change of CRn value to N to M between two clocks (00H and 01H) after overflow of TMn
Count clock
TMn
CRn
TCEn
INTTMn
TIOn
N
N+1 N+2
FFH 00H 01H
N
N+1 N+2
FFH 00H 01H 02H
N
02H
N
H
M
M M+1 M+2
CRn transition (N
→
M)
n = 2, 3
Содержание mPD780973 Series
Страница 2: ...2 MEMO ...
Страница 66: ...66 MEMO ...
Страница 98: ...98 MEMO ...
Страница 138: ...138 MEMO ...
Страница 164: ...164 MEMO ...
Страница 182: ...182 MEMO ...
Страница 204: ...204 MEMO ...
Страница 244: ...244 MEMO ...
Страница 262: ...262 MEMO ...
Страница 278: ...278 MEMO ...
Страница 290: ...290 MEMO ...