UPD78F9500MA-CAC-A Datasheet, PDF (144/342 Pages) Renesas Technology Corp – 8-Bit Single-Chip Microcontrollers

Count clock
CHAPTER 7 8-BIT TIMER H1
Figure 7-10. Operation Timing in PWM Output Mode (1/4)
(a) Basic operation (00H < CMP11 < CMP01 < FFH)
8-bit timer counter H1 00H 01H
A5H 00H 01H 02H
A5H 00H 01H 02H
A5H 00H
CMP01
A5H
CMP11
01H
TMHE1
INTTMH1
TOH1
(TOLEV1 = 0)
<1>
<2>
<3>
<4>
TOH1
(TOLEV1 = 1)
<1> The count operation is enabled by setting the TMHE1 bit to 1. Start 8-bit timer counter H1 by masking one
count clock to count up. At this time, TOH1 output remains inactive (when TOLEV1 = 0).
<2> When the values of 8-bit timer counter H1 and the CMP01 register match, the TOH1 output level is inverted,
the value of 8-bit timer counter H1 is cleared, and the INTTMH1 signal is output.
<3> When the values of 8-bit timer counter H1 and the CMP11 register match, the level of the TOH1 output is
returned. 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 makes the INTTMH1 signal and TOH1 output inactive.
142
User’s Manual U18172EJ3V0UD