Datasheet

Section 10 I/O Ports
R01UH0309EJ0500 Rev. 5.00 Page 657 of 1408
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
• PF6/AS/AH
The pin function is switched as shown below according to the combination of the operating
mode, bit EXPE, bit MPXE in MPXCR of the bus controller, bit ASOE in PFCR2, and bit
PF6DDR.
Operating
mode
1, 2, 4 3, 7
EXPE ⎯ 0 1
ASOE 1 0 ⎯ 1 0
PF6DDR ⎯ 0 1 0 1 ⎯ 0 1
Pin function AS/AH*
output
PF6
input
PF6
output
PF6
input
PF6
output
AS/AH*
output
PF6
input
PF6
output
Note: * AH output when MPXE = 1, and AS output when MPXE = 0.
• PF5/RD
The pin function is switched as shown below according to the combination of the operating
mode, bit EXPE, and bit PF5DDR.
Operating
mode
1, 2, 4 3, 7
EXPE ⎯ 0 1
PF5DDR ⎯ 0 1 ⎯
Pin function RD output PF5 input PF5 output RD output
• PF4/HWR
The pin function is switched as shown below according to the combination of the operating
mode, bit EXPE, and bit PF4DDR.
Operating
mode
1, 2, 4 3, 7
EXPE ⎯ 0 1
PF4DDR ⎯ 0 1 ⎯
Pin function HWR output PF4 input PF4 output HWR output