r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 772

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 11 16-Bit Timer Pulse Unit (TPU)
(1)
Figure 11.25 shows an example of the phase counting mode setting procedure.
(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. Phase counting mode 1
Rev. 1.00 Sep. 19, 2008 Page 744 of 1270
REJ09B0466-0100
TCLKA (channels 1 and 5)
TCLKC (channels 2 and 4)
TCLKB (channels 1 and 5)
TCLKD (channels 2 and 4)
Figure 11.26 shows an example of phase counting mode 1 operation, and table 11.33
summarizes the TCNT up/down-count conditions.
Example of Phase Counting Mode Setting Procedure
Examples of Phase Counting Mode Operation
TCNT value
Figure 11.25 Example of Phase Counting Mode Setting Procedure
Select phase counting mode
Figure 11.26 Example of Phase Counting Mode 1 Operation
<Phase counting mode>
Phase counting mode
Start count
Up-count
[1]
[2]
[1]
[2]
Select phase counting mode with bits MD3 to
MD0 in TMDR.
Set the CST bit in TSTR to 1 to start the count
operation.
Down-count
Time