HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 407

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

9.4.3
Port 3 pins also function as SCI I/O pins (TxD
functions are shown in table 9.7.
Table 9.7
Pin
P3
P3
5
4
/SCK
/SCK
1
0
Pin Functions
Port 3 Pin Functions
The pin function is switched as shown below according to the combination of
bit C/A in the SCI1 SMR, bits CKE0 and CKE1 in SCR, and bit P35DDR.
Note: * When P35ODR = 1, the pin becomes an NMOS open-drain output.
The pin function is switched as shown below according to the combination of
bit C/A in the SCI0 SMR, bits CKE0 and CKE1 in SCR, and bit P34DDR.
Note: * When P34ODR = 1, the pin becomes an NMOS open-drain output.
Selection Method and Pin Functions
CKE1
C/A
CKE0
P35DDR
Pin function
CKE1
C/A
CKE0
P34DDR
Pin function
input pin
input pin
P3
P3
0
0
5
4
0
, RxD
0
0
output pin *
output pin *
0
P3
P3
, SCK
0
1
0
1
Rev.6.00 Sep. 27, 2007 Page 377 of 1268
5
4
0
0
0
, TxD
output pin *
output pin *
SCK
SCK
—
—
1
1
1
, RxD
1
0
1
, and SCK
output pin *
output pin *
SCK
SCK
Section 9 I/O Ports
—
—
—
—
1
1
REJ09B0220-0600
1
0
1
). Port 3 pin
input pin
input pin
SCK
SCK
—
—
—
—
—
—
1
1
1
0