h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 306

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 9 I/O Ports
Table 9-5
Rev. 6.00 Feb 22, 2005 page 246 of 1484
REJ09B0103-0600
Pin
P35/SCK1/
SCL0 *
P34/RxD1/
SDA0 *
1
1
/
I R Q 5
Port 3 Pin Functions
Selection Method and Pin Functions
Switches as follows according to combinations of ICCR0 ICE bit *
SMR1, bits CKE0 and CKE1 of SCR1, and bit P35DDR.
When used as a SCL0 I/O pin, always be sure to clear the following bits to 0: bit
C/
NMOS open drain output, enabling direct bus driving.
Note: * When P35ODR = 1, it becomes NMOS open drain output.
Switches as follows according to combinations of ICCR0 ICE bit *
SCR1 and bit P34DDR. The SDA0 output format is NMOS open drain output,
enabling direct bus driving.
Note: * When P34ODR = 1, it becomes NMOS open drain output.
ICE *
CKE1
C/
CKE0
P35DDR
Pin function
ICE *
RE
P34DDR
Pin function
A
A
of SMR1, and bits CKE0 and CKE1 of SCR1. The SCL0 output format is
1
1
In W mask-ROM versions, the output format is NMOS push-pull. However, it
becomes NMOS open drain output when P35ODR = 1.
In W mask-ROM versions, the output format is NMOS push-pull. However, it
becomes NMOS open drain output when P34ODR = 1.
input
P35
P34 input
0
0
0
output *
P35
0
0
1
P34 output *
0
0
1
output *
SCK1
—
0
1
I R Q 5
input
output *
RxD1 input
SCK1
—
—
1
—
1
SCK1
input
1
1
—
—
—
1
of IIC0, bit C/
of IIC0, bit RE of
SDA0 I/O
—
—
1
SCL0
I/O
—
1
0
0
0
A
of