HD6412373R RENESAS [Renesas Technology Corp], HD6412373R Datasheet - Page 672

• Manufacturer Part Number: HD6412373R
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 11 16-Bit Timer Pulse Unit (TPU)
Examples of Phase Counting Mode Operation: In phase counting mode, TCNT counts up or
down according to the phase difference between two external clocks. There are four modes,
according to the count conditions.
1. Phase counting mode 1
Table 11.32 Up/Down-Count Conditions in Phase Counting Mode 1
TCLKA (Channels 1 and 5)
TCLKC (Channels 2 and 4)
High level
Low level
High level
Low level
Legend:
Rev.7.00 Mar. 18, 2009 page 604 of 1136
REJ09B0109-0700
TCLKA (channels 1 and 5)
TCLKC (channels 2 and 4)
TCLKB (channels 1 and 5)
TCLKD (channels 2 and 4)
Figure 11.25 shows an example of phase counting mode 1 operation, and table 11.32
summarizes the TCNT up/down-count conditions.
: Rising edge
: Falling edge
TCNT value
Figure 11.25 Example of Phase Counting Mode 1 Operation
Up-count
TCLKB (Channels 1 and 5)
TCLKD (Channels 2 and 4)
Low level
High level
High level
Low level
Down-count
Operation
Up-count
Down-count
Time