h8s-2628 Renesas Electronics Corporation., h8s-2628 Datasheet - Page 258

• Manufacturer Part Number: h8s-2628
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 10 16-Bit Timer Pulse Unit (TPU)
Examples of Cascaded Operation: Figure 10.18 illustrates the operation when TCNT_2
overflow/underflow counting has been set for TCNT_1, when TGRA_1 and TGRA_2 have been
designated as input capture registers, and when 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 10.19 illustrates the operation when TCNT_2 overflow/underflow counting 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. 3.00 Oct 04, 2005 page 218 of 598
REJ09B0155-0300
TCNT_1
clock
TCNT_1
TCNT_2
clock
TCNT_2
TIOCA2,
TIOCA1
TGRA_1
TGRA_2
TCLKA
TCLKB
TCNT_2
TCNT_1
H'03A1
H'FFFF
Figure 10.18 Example of Cascaded Operation (1)
Figure 10.19 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