Operation Timing; Input/Output Timing; Figure 10.30 Count Timing In Internal Clock Operation; Figure 10.31 Count Timing In External Clock Operation - Renesas H8S Series Hardware Manual

Section 10 16-Bit Timer Pulse Unit (TPU)
10.8

Operation Timing

10.8.1

Input/Output Timing

TCNT Count Timing: Figure 10.30 shows TCNT count timing in internal clock operation, and
figure 10.31 shows TCNT count timing in external clock operation.
φ
Internal clock
TCNT
input clock
TCNT

Figure 10.30 Count Timing in Internal Clock Operation

φ
External clock
TCNT
input clock
TCNT

Figure 10.31 Count Timing in External Clock Operation

Output Compare Output Timing: A compare match signal is generated in the final state in
which TCNT and TGR match (the point at which the count value matched by TCNT is updated).
When a compare match signal is generated, the output value set in TIOR is output at the output
compare output pin. After a match between TCNT and TGR, the compare match signal is not
generated until the TCNT input clock is generated.
Figure 10.32 shows output compare output timing.
Rev. 6.00 Mar 15, 2006 page 226 of 570
REJ09B0211-0600
Falling edge
N − 1
N
Falling edge
N − 1
N
Rising edge
N + 1
Rising edge Falling edge
N + 1
N + 2
N + 2