Renesas H8S/2111B 用户手册

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页码 582
Rev. 1.00, 05/04, page 119 of 544 
 
7.8.3 Pin 
Functions 
•  P86/IRQ5/SCK1/SCL1 
The pin function is switched as shown below according to the combination of the C/
A bit in 
SMR of SCI_1, the CKE0 and CKE1 bits in SCR, the SPS1 bit*
2
 in SPSR, the ICE bit in ICCR 
of IIC_1, the IIC1AS and the IIC1BS bits in PGCTL*
3
, and the 86DDR bit. 
 
P86ICE 
= ICE • (IIC1AS+IIC1BS)*
3
 
 
SPS1*
2
 0 
P86ICE*
3
 0  1 
CKE1 0 
— 
— 
— 
C/
A 0 
— 
— 
— 
— 
CKE0 0 
— 
— 
— 
— 
— 
P86DDR 
0  1 — — —  —  0 
1  — 
P86  
input 
pin 
P86  
output 
pin 
SCK1 
output 
pin 
SCK1 
output 
pin 
SCK1 
input 
pin 
SCL1 
I/O pin 
P86  
input pin
P86 
output 
pin 
SCL1 
I/O pin
Pin Function 
IRQ5 input pin*
1
 
Notes:  1.  When the IRQ5E bit in IER is set to 1, this pin is used as the IRQ5 input pin. When this 
pin is used as the SCL1 I/O pin, bits CKE1 and CKE0 in SCR of SCI_1 and bit C/A in 
SMR of SCI_1 must all be cleared to 0. When the P86 output pin and SCK1 output pin 
are set, the output type is NMOS push-pull output. SCL1 is an NMOS-only output, and 
has direct bus drive capability. 
 
2.  The program development tool (emulator) does not support this function. 
 
3.  The program development tool (emulator) does not support the function of PGCTL. 
Thus P86ICE is treated as ICE. 
 
•  P85/IRQ4/RxD1 
The pin function is switched as shown below according to the combination of the RE bit in 
SCR of SCI_1, the SPS1 bit*
2
 in SPSR, and the P85DDR bit. 
 
SPS1*
2
 0 
RE 0 
— 
P85DDR 0 
—  0 
P85 input 
pin 
P85 output 
pin 
RxD1 input 
pin 
P85 input pin 
P85 output pin 
Pin Function 
IRQ4 input pin*
1
 
Notes:  1.  When the IRQ4E bit in IER is set to 1, this pin is used as the 
IRQ4 input pin. 
 
2.  The program development tool (emulator) does not support this function.