Datasheet

Section 9 16-Bit Timer Pulse Unit (TPU)
Rev.7.00 Feb. 14, 2007 page 367 of 1108
REJ09B0089-0700
• Phase counting mode 4
Figure 9.32 shows an example of phase counting mode 4 operation, and table 9.12 summarizes
the TCNT up/down-count conditions.
Time
TCLKA (channels 1 and 5)
TCLKC (channels 2 and 4)
TCLKB (channels 1 and 5)
TCLKD (channels 2 and 4)
Up-count
Down-count
TCNT value
Figure 9.32 Example of Phase Counting Mode 4 Operation
Table 9.12 Up/Down-Count Conditions in Phase Counting Mode 4
TCLKA (Channels 1 and 5)
TCLKC (Channels 2 and 4)
TCLKB (Channels 1 and 5)
TCLKD (Channels 2 and 4) Operation
High level Up-count
Low level
Low level Don’t care
High level
High level Down-count
Low level
High level Don’t care
Low level
Legend:
: Rising edge
: Falling edge