Hitachi H8S/2338 Series Hardware Manual page 309

• Phase counting mode 2
Figure 7-30 shows an example of phase counting mode 2 operation, and table 7-10 summarizes
the TCNT up/down-count conditions.
TCLKA (Channels 1 and 5)
TCLKC (Channels 2 and 4)
TCLKB (Channels 1 and 5)
TCLKD (Channels 2 and 4)
TCNT value
Figure 7-30 Example of Phase Counting Mode 2 Operation
Table 7-10 Up/Down-Count Conditions in Phase Counting Mode 2
TCLKA (Channels 1 and 5)
TCLKC (Channels 2 and 4)
High level
Low level
High level
Low level
Legend
: Rising edge
: Falling edge
Up-count
TCLKB (Channels 1 and 5)
TCLKD (Channels 2 and 4)
Low level
High level
High level
Low level
Down-count
Time
Operation
Don't care
Don't care
Don't care
Up-count
Don't care
Don't care
Don't care
Down-count
295