Datasheet
78K0/Ix2 CHAPTER 9 8-BIT TIMER H1
R01UH0010EJ0500 Rev.5.00 346
Feb 28, 2012
Figure 9-12. Operation Timing in PWM Output Mode (1/4)
(a) Basic operation
Count clock
8-bit timer counter H1
CMP01
TMHE1
INTTMH1
TOH1
(TOLEV1 = 0)
TOH1
(TOLEV1 = 1)
00H 01H A5H 00H 01H 02H A5H 00H A5H 00H01H 02H
CMP11
A5H
01H
<1>
<2>
<3>
<4>
<1> The count operation is enabled by setting the TMHE1 bit to 1. Start the 8-bit timer counter H1 by masking one
count clock to count up. At this time, PWM output outputs an inactive level.
<2> When the values of the 8-bit timer counter H1 and the CMP01 register match, an active level is output. At this
time, the value of the 8-bit timer counter H1 is cleared, and the INTTMH1 signal is output.
<3> When the values of the 8-bit timer counter H1 and the CMP11 register match, an inactive level is output. At this
time, the 8-bit timer counter value is not cleared and the INTTMH1 signal is not output.
<4> Clearing the TMHE1 bit to 0 during timer H1 operation sets the INTTMH1 signal to the default and PWM output to
an inactive level.