Electronics America Single-Chip Microcontrollers User's Manual

CHAPTER 7 8-BIT TIMERS 50, 60, AND 61
User’s Manual U15331EJ4V1UD
147
TMI60 pin input
TM60 count value
CR60
TCE60
INTTM60
FFH 00H7FH
00H
N00H
NN N N
80H
7FH
80H
FFH
00H
N
00H
N
N
N
TM50 count pulse
TM50 00H
X
01H
CR50
X
X
X
7FH
80H FFH
00H
N
00H
N
N
N
X
X − 1
00H
X − 1
Not cleared because TM50 does not match
Cleared because TM50 and TM60 match simultaneously
Count start
Interrupt not generated because
TM50 does not match
Interrupt acknowledgement Interrupt
acknowledgement
Remark X = 00H to FFH, N = 00H to FFH
Figure 7-20. Timing of External Event Counter Operation with 16-Bit Resolution