r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 808

• Manufacturer Part Number: r5s77631ay266bgv
• Description: Renesas 32-bit Risc Microcomputer Superhtm Risc Engine Family Sh-4a Series
• Manufacturer: Renesas Electronics Corporation.

Section 20 16-Bit Timer Pulse Unit (TPU)
(2)
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.
(a)
Figure 20.15 shows an example of phase counting mode 1 operation, and table 20.10 summarizes
the TCNT up/down-count conditions.
Table 20.10 Up/Down-Count Conditions in Phase Counting Mode 1
[Legend]
Rev. 1.00 Oct. 01, 2007 Page 742 of 1956
REJ09B0256-0100
TPU_TI2A (Channel 2)
TPU_TI3A (Channel 3)
High level
Low level
High level
Low level
: Rising edge
TPU_ TI2A (channel 2)
TPU_ TI3A (channel 3)
TPU_ TI2B (channels 2)
TPU_ TI3B (channels 3)
: Falling edge
Examples of Phase Counting Mode Operation
Phase counting mode 1
TCNT value
Figure 20.15 Example of Phase Counting Mode 1 Operation
Up-count
TPU_TI2B (Channel 2)
TPU_TI3B (Channel 3)
Low level
High level
High level
Low level
Down-count
Operation
Up-count
Down-count
Time