Datasheet

Section 10 I/O Ports
Page 624 of 1408 R01UH0309EJ0500 Rev. 5.00
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
• PB4/A12/TIOCA7
The pin function is switched as shown below according to the combination of the operating
mode, bit EXPE, TPU channel 7 settings (by bits MD3 to MD0 in TMDR_7, bits IOA3 to
IOA0 in TIOR_7, and bits CCLR1 and CCLR0 in TCR_7), and bit PB4DDR.
Operating
mode
1, 2 4 3, 7 (EXPE = 1) 3, 7 (EXPE = 0)
TPU channel
7 settings
⎯ ⎯ (1) in table
below
(2) in table below
PB4DDR ⎯ 0 1 ⎯ 0 1
PB4 input PB4 output Pin function A12 output PB4 input A12 output TIOCA7
output
TIOCA7 input*
1
TPU channel 7
settings
(2) (1) (2) (1) (1) (2)
MD3 to MD0 B'0000, B'01xx 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
CCLR1,
CCLR0
⎯ ⎯ ⎯ ⎯ Other than
B'01
B'01
Output function ⎯ Output
compare
output
⎯ PWM*
2
mode 1
output
PWM mode
2 output
⎯
[Legend]
x: Don't care
Notes: 1. TIOCA7 input when MD3 to MD0 = B'0000 or B'01xx and IOA3 to IOA0 = B'10xx.
2. TIOCB7 output disabled.