HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 361

• Manufacturer Part Number: HD6412340
• Description: H8S/2345 F-ZTAT Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

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.
Table 9.9
TCLKA (Channels 1 and 5)
TCLKC (Channels 2 and 4)
High level
Low level
High level
Low level
Legend
344
TCLKA (channels 1 and 5)
TCLKC (channels 2 and 4)
TCLKB (channels 1 and 5)
TCLKD (channels 2 and 4)
Phase counting mode 1
Figure 9.29 shows an example of phase counting mode 1 operation, and table 9.9 summarizes
the TCNT up/down-count conditions.
: Rising edge
: Falling edge
TCNT value
Up/Down-Count Conditions in Phase Counting Mode 1
Figure 9.29 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