r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 575

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

• P34/SCK0/SCK4-A/SDA0
ICE
CKE1
C/A
CKE0
P34DDR
Pin function
Notes: 1. NMOS open-drain output when P34ODR = 1.
• P33/RxD1/SCL1
ICE
RE
P33DDR
Pin function
Notes: 1. NMOS open-drain output when P33ODR = 1.
The pin function is switched as shown below according to the combination of bit ICE in
ICCRA_0 of I
and bit P34DDR.
The pin function is switched as shown below according to the combination of bit ICE in
ICCRA_1 of I
2. NMOS open-drain output regardless of P34ODR.
3. Simultaneous output of SCK0 and SCK4 cannot be set.
4. SCK4-A input/output when the SCK4S bit in PFCR4 is 0.
2. NMOS open-drain output regardless of P33ODR.
2
2
C, bit C/A in SMR_0 and bits CKE0 and CKE1 in SCR_0 and SCR_4 of SCI,
C, bit RE in SCR_1 of SCI, and bit P33DDR.
input
P34
0
P33 input
0
0
output *
P34
1
0
1
0
SCK0/SCK4-A
output*
P33 output *
0

1
1
*
0
1
3
*
4
0
1
SCK0/SCK4-A
output*
Rev. 1.00 Sep. 19, 2008 Page 545 of 1342
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1
1
RxD1 input
*
3
*
4

1
SCK0/SCK4-A
input*



1
Section 10 I/O Ports
4
REJ09B0467-0100
SCL1 I/O *


SDA0
1
I/O *




1
2
2