HD64F2638F20J Datasheet, PDF (297/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
Section 9 I/O Ports
Pin
P33/TxD1/
SCL1^*1
Selection Method and Pin Functions
Switches as follows according to combinations of ICCR1 ICE bit^*1 of IIC1, bit TE of
SCR1 and bit P33DDR. The SCL1 output format is NMOS open drain output,
enabling direct bus driving.
ICE^*1
0
1
TE
0
1
—
P33DDR
Pin function
0
P33 input
1
P33 output^*
—
TxD1 output^*
—
SCL1 I/O
Note: * When P33ODR = 1, it becomes NMOS open drain output.
P32/SCK0/ Switches as follows according to combinations of ICCR1 ICE bit^*1 of IIC1, bit C/A of
SDA1^*1/IRQ4 SMR0, bits CKE0 and CKE1 of SCR0, and bit P32DDR. When used as a SDA1 I/O
pin, always be sure to clear the following bits to 0: SMR0 C/A bit, SCR0 CKE0 and
CKE1 bits.
The SDA1 output format is NMOS open drain output, enabling direct bus driving.
ICE^*1
0
1
CKE1
0
1
0
C/A
0
1
—
0
CKE0
0
1
—
—
0
P32DDR
0
1
—
—
—
—
Pin function
P32
input
P32
output
SCK0 SCK0
output^* output^*
SCK0
input
SDA1
I/O
IRQ4 input
Note: * When P32ODR = 1, it becomes NMOS open drain output.
P31/RxD0/
IrRxD
Switches as follows according to combinations of bit RE of SCR0 and bit P31DDR.
RE
0
1
P31DDR
Pin function
0
P31 input
1
P31 output^*
—
RxD0 input
Note: * When P31ODR = 1, it becomes NMOS open drain output.
P30/TxD0/
IrTxD
Switches as follows according to combinations of bit TE of SCR0 and bit P30DDR.
TE
0
1
P30DDR
Pin function
0
P30 input
1
P30 output^*
—
TxD0 output^*
Note: * When P30ODR = 1, it becomes NMOS open drain output.
Note: 1. Available when using I²C bus interface (the W-mask version of the H8S/2638, H8S/2639,
and H8S/2630 only). In W mask-ROM versions, the output format is NMOS push-pull.
However, it becomes NMOS open drain output when P34ODR = 1 and P35ODR = 1.
REJ09B0103-0800 Rev. 8.00
May 28, 2010
Page 247 of 1458