Electronics America Single-Chip Microcontrollers User's Manual

CHAPTER 7 8-BIT TIMERS 50, 60, AND 61
User’s Manual U15331EJ4V1UD
138
Figure 7-15. Timing of Interval Timer Operation with 8-Bit Resolution
(When CRnm Changes from N to M (N > M))
Count clock
CRnm
TCEnm
INTTMnm
TOnm
TMnm
00H
00H
00H
N − 1
N
MN M
N
M
00H
FFH M
H
Clear Clear Clear
TMnm overflows
because M < N
CRnm overwritten
Remark 00H ≤ M < N ≤ FFH
nm = 50, 60, 61