HD6432351 Datasheet, PDF (364/989 Pages) Renesas Technology Corp – The H8S/2000 CPU has an internal 32-bit architecture, is provided with sixteen 16-bit general registers and a concise

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
0
1
C/A
0
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.
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