Renesas H8S/2111B 用户手册

Rev. 1.00, 05/04, page 126 of 544 

 

PAPIN indicates the port A state. 

7 PA7PIN 

Undefined* R 

6 PA6PIN 

Undefined* R 

5 PA5PIN 

Undefined* R 

4 PA4PIN 

Undefined* R 

3 PA3PIN 

Undefined* R 

2 PA2PIN 

Undefined* R 

1 PA1PIN 

Undefined* R 

0 PA0PIN 

Undefined* R 

Reading PAPIN always returns the pin states. PAPIN 
has the same address as PADDR. If a write is 
performed, the port A settings will change. 

Note:  *  The initial value is determined according to the PA7 to PA0 pin states. 

 

•  PA7/KIN15/PS2CD 

The pin function is switched as shown below according to the combination of the KBIOE bit in 
KBCRH_2 of the keyboard buffer controller, and the PA7DDR bit. 

 

KBIOE 0 

1 

PA7DDR 0  1 

— 

PA7 input pin 

PA7 output pin 

PS2CD output pin 

Pin Function 

KIN15 input pin, PS2CD input pin* 

Note:  *  When the KBIOE bit is set to 1 or the IICS bit in STCR is set to 1, this pin is an NMOS 

open-drain output, and has direct bus drive capability. This pin can always be used as 
the PS2CD or 

KIN15 input pin. 

 

•  PA6/KIN14/PS2CC 

The pin function is switched as shown below according to the combination of the KBIOE bit in 
KBCRH_2 of the keyboard buffer controller, and the PA6DDR bit. 

 

KBIOE 0 

1 

PA6DDR 0  1 

— 

PA6 input pin 

PA6 output pin 

PS2CC output pin 

Pin Function 

KIN14 input pin, PS2CC input pin* 

Note:  *  When the KBIOE bit is set to 1 or the IICS bit in STCR is set to 1, this pin is an NMOS 

open-drain output, and has direct bus drive capability. This pin can always be used as 
the PS2CC or 

KIN14 input pin.