Datasheet
Section 13 8-Bit Timers (TMR) 
R01UH0310EJ0500 Rev. 5.00    Page 833 of 1384 
Sep 25, 2012     
H8S/2426, H8S/2426R, H8S/2424 Group 
Table 13.3  Clock Input to TCNT and Count Condition 
 TCR TCCR  
Channel 
Bit 2 
CKS2 
Bit 1 
CKS1 
Bit 0 
CKS0 
Bit 1 
ICKS1 
Bit 0 
ICKS0 Description 
TMR_0 0 0 0 ⎯  ⎯ Clock input disabled 
  0  0  1  0  0  Internal clock, counted at rising edge of φ/8 
        0  1  Internal clock, counted at rising edge of φ/2 
        1  0  Internal clock, counted at falling edge of φ/8 
        1  1  Internal clock, counted at falling edge of φ/2 
  0  1  0  0  0  Internal clock, counted at rising edge of φ/64 
        0  1  Internal clock, counted at rising edge of φ/32 
        1  0  Internal clock, counted at falling edge of φ/64 
        1  1  Internal clock, counted at falling edge of φ/32 
  0  1  1  0  0  Internal clock, counted at rising edge of φ/8192 
        0  1  Internal clock, counted at rising edge of φ/1024 
        1  0  Internal clock, counted at falling edge of φ/8192 
        1  1  Internal clock, counted at falling edge of φ/1024 
  1 0 0 ⎯  ⎯  Counted at TCNT_1 overflow signal
*
TMR_1 0 0 0 ⎯  ⎯ Clock input disabled 
  0  0  1  0  0  Internal clock, counted at rising edge of φ/8 
        0  1  Internal clock, counted at rising edge of φ/2 
        1  0  Internal clock, counted at falling edge of φ/8 
        1  1  Internal clock, counted at falling edge of φ/2 
  0  1  0  0  0  Internal clock, counted at rising edge of φ/64 
        0  1  Internal clock, counted at rising edge of φ/32 
        1  0  Internal clock, counted at falling edge of φ/64 
        1  1  Internal clock, counted at falling edge of φ/32 
  0  1  1  0  0  Internal clock, counted at rising edge of φ/8192 
        0  1  Internal clock, counted at rising edge of φ/1024 
        1  0  Internal clock, counted at falling edge of φ/8192 
        1  1  Internal clock, counted at falling edge of φ/1024 
  1 0 0 ⎯  ⎯  Counted at TCNT_0 compare match A
*










