r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 626

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 10 I/O Ports
Operating
mode
EXPE
A19E
CKE1
C/A
CKE0
PA3DDR
Pin function
Note:
• PA2/A18/RxD4-B
Operating
mode
EXPE
A18E
RE
PA2DDR
Pin function
Note:
Rev. 1.00 Sep. 19, 2008 Page 598 of 1270
REJ09B0466-0100
The pin function is switched as shown below according to the combination of the operating
mode, bit EXPE, bit RE in SCR_4 of the SCI, bit A18E in PFCR1, bit RXD4S in PFCR4, and
bit PA2DDR.
*
*
output
SCK4-B input/output when the SCK4S bit in PFCR4 is 1.
RxD4-B input when the RXD4S bit in PFCR4 is 1.
A18
1, 2
input




PA3
0
0
input
PA2
output
0
PA3
1
0
0
output
PA2
0
SCK4-B
1
output*
0

1

0
RxD4-B
input*


1
4
SCK4-B
output*


1
input
PA2
0
SCK4-B
input*

1



1
output
A18
1
input
PA3
input
PA2
0
0
0
7
0
output
output
PA3
PA2
1
1
0

0
0
SCK4-B
RxD4-B
output*
input*


1
1
0
input
PA2
SCK4-B
output*
0


1
1
7
0
output
PA2
1
0
SCK4-B
input*



RxD4-B
1
input*

1
1
input
PA3
input
0
PA2
0



1

1
output
output
A19
A18
1
1