Renesas H8S/2100 Series Hardware Manual page 298

Section 10 16-Bit Timer Pulse Unit (TPU)
(c) Phase counting mode 3
Figure 10.28 shows an example of phase counting mode 3 operation, and table 10.23 summarizes
the TCNT up/down-count conditions.
TCLKA (channel 1)
TCLKC (channel 2)
TCLKB (channel 1)
TCLKD (channel 2)
TCNT value
Figure 10.28 Example of Phase Counting Mode 3 Operation
Table 10.23 Up/Down-Count Conditions in Phase Counting Mode 3
TCLKA (Channel 1)
TCLKC (Channel 2)
High level
Low level
High level
Low level
[Legend]
: Rising edge
: Falling edge
Rev. 1.00 May 09, 2008 Page 272 of 954
REJ09B0462-0100
Up-count
TCLKB (Channel 1)
TCLKD (Channel 2)
Low level
High level
High level
Low level
Down-count
Operation
Don't care
Don't care
Don't care
Up-count
Down-count
Don't care
Don't care
Don't care
Time