Datasheet
Section 11 16-Bit Timer Pulse Unit (TPU) 
Page 784 of 1384    R01UH0310EJ0500 Rev. 5.00 
 Sep 25, 2012 
H8S/2426, H8S/2426R, H8S/2424 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 










