Datasheet

Section 11 16-Bit Timer Pulse Unit (TPU)
R01UH0309EJ0500 Rev. 5.00 Page 777 of 1408
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
11.9 Operation Timing
11.9.1 Input/Output Timing
(1) TCNT Count Timing
Figure 11.31 shows TCNT count timing in internal clock operation, and figure 11.32 shows TCNT
count timing in external clock operation.
TCNT
TCNT
input clock
Internal clock
φ
N – 1 N N + 1 N + 2
Falling edge Rising edge
Figure 11.31 Count Timing in Internal Clock Operation
TCNT
TCNT
input clock
External clock
φ
N – 1 N N + 1 N + 2
Falling edge Rising edge Falling edge
Figure 11.32 Count Timing in External Clock Operation