CHAPTER 7 8-BIT TIMER
Figure 7-22. Operation Timing in PWM Free-Running Mode (When Rising Edge Is Selected)
Count clock
N
N
00H
01H
FFH 00H
Overflow
N
FFH 00H
Overflow
TM50
N
CR50
TCE50
Count start
INTTM50
TO50
Caution When the rising edge is selected, do not set the CR50 to 00H. If the CR50 is set to 00H, PWM
output may not be performed normally.
Figure 7-23. Operation Timing When Overwriting CR50 (When Rising Edge Is Selected) (1/2)
(1) When setting CR50 > TM50 after overflow
Count clock
N
00H
01H
FFH 00H
Overflow
M
FFH 00H
Overflow
TM50
01H
Overflow
M
CR50
N
TCE50
Count start
INTTM50
TO50
CR50 overwrite
User’s Manual U15075EJ1V0UM00
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NEC [ NEC ]
