D12320VF25IV Datasheet, PDF (409/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 9 I/O Ports
9.4.3 Pin Functions
Port 3 pins also function as SCI I/O pins (TxD₀, RxD₀, SCK₀, TxD₁, RxD₁, and SCK₁). Port 3 pin
functions are shown in table 9.7.
Table 9.7 Port 3 Pin Functions
Pin
P35/SCK1
Selection Method and 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.
CKE1
C/A
0
0
1
1
—
CKE0
0
1
—
—
P35DDR
0
1
—
—
—
Pin function
P35
P35
SCK1
SCK1
SCK1
input pin output pin^* output pin^* output pin^* input pin
Note: * When P35ODR = 1, the pin becomes an NMOS open-drain output.
P34/SCK0
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.
CKE1
0
1
C/A
0
1
—
CKE0
0
1
—
—
P34DDR
0
1
—
—
—
Pin function
P34
P34
SCK0
SCK0
SCK0
input pin output pin^* output pin^* output pin^* input pin
Note: * When P34ODR = 1, the pin becomes an NMOS open-drain output.
Rev.6.00 Sep. 27, 2007 Page 377 of 1268
REJ09B0220-0600