Datasheet
Section 10 I/O Ports 
Page 546 of 1384    R01UH0310EJ0500 Rev. 5.00 
 Sep 25, 2012 
H8S/2426, H8S/2426R, H8S/2424 Group
•  P10/DREQ0/PO8/TIOCA0 
The pin function is switched as shown below according to the combination of the TPU channel 
0 settings (by bits MD3 to MD0 in TMDR_0, bits IOA3 to IOA0 in TIORH_0, and bits 
CCLR2 to CCLR0 in TCR_0), bit NDER8 in NDERH of the PPG, and bit P10DDR. 
TPU channel 0 
settings 
(1) in table 
below 
(2) in table below 
P10DDR  ⎯ 0  1 
NDER8  ⎯  ⎯ 0 1 
P10 input  P10 output  PO8 output TIOCA0 output 
TIOCA0 input*
1
Pin function 
DREQ0 input 
TPU channel 0 
settings 
(2) (1)  (2)  (1) (1) (2) 
MD3 to MD0  B'0000  B'001x  B'0010  B'0011 
IOA3 to IOA0  B'0000, 
B'0100, 
B'1xxx 
B'0001 to 
B'0011, 
B'0101 to 
B'0111 
B'xx00 Other than 
B'xx00 
Other than B'xx00 
CCLR2 to 
CCLR0 
⎯  ⎯  ⎯  ⎯  Other than 
B'001 
B'001 
Output function  ⎯ Output 
compare 
output 
⎯ PWM*
2
mode 1 
output 
PWM 
mode 2 
output 
⎯ 
[Legend] 
x: Don't care 
Notes:  1.  TIOCA0 input when MD3 to MD0 = B'0000 and IOA3 to IOA0 = B'10xx. 
  2.  TIOCB0 output disabled. 










