r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 764

• 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)
(2)
Figure 11.19 illustrates the operation when counting upon TCNT_2 overflow/underflow has been
set for TCNT_1, TGRA_1 and TGRA_2 have been designated as input capture registers, and the
TIOC pin rising edge has been selected.
When a rising edge is input to the TIOCA1 and TIOCA2 pins simultaneously, the upper 16 bits of
the 32-bit data are transferred to TGRA_1, and the lower 16 bits to TGRA_2.
Figure 11.20 illustrates the operation when counting upon TCNT_2 overflow/underflow has been
set for TCNT_1, and phase counting mode has been designated for channel 2.
TCNT_1 is incremented by TCNT_2 overflow and decremented by TCNT_2 underflow.
Rev. 1.00 Sep. 19, 2008 Page 736 of 1270
REJ09B0466-0100
Examples of Cascaded Operation
TCNT_1
clock
TCNT_1
TCNT_2
clock
TCNT_2
TIOCA1,
TIOCA2
TGRA_1
TGRA_2
TCLKC
TCLKD
TCNT_2
TCNT_1
H'FFFF
H'03A1
Figure 11.19 Example of Cascaded Operation (1)
Figure 11.20 Example of Cascaded Operation (2)
FFFD
0000
FFFE
FFFF
0000
H'0000
0001
H'03A2
H'03A2
H'0000
0001
0002
0001
0000
H'0001
FFFF
0000