Port 9 - Renesas H8S/2100 Series Hardware Manual

8.2.9

Port 9

(1) P97/IRQ15/SDA0
The pin function is switched as shown below according to the combination of the ICE bit in ICCR
of IIC_0 and the P97DDR bit. When the ISS15 bit in ISSR16 is cleared to 0 and the IRQ15E bit in
IER16 of the interrupt controller is set to 1, this pin functions as the IRQ15 input pin.
ICE
P97DDR
Pin function
Note: The output format for SDA0 is NMOS output only and direct bus drive is possible. When this
pin is used as the P97 output pin, the output format is NMOS push-pull.
(2) P96/φ/EXCL
The pin function is switched as shown below according to the combination of the register settings
of the EXCLS bit in PTCNT0 and the EXCLE bit in LPWRCR, and the P96DDR bit.
P96DDR
EXCLS
EXCLE
Pin function
(3) P95/IRQ14, P94/IRQ13, P93/IRQ12, P92/IRQ0, P91/IRQ1, P90/IRQ2
The pin function is switched as shown below according to the P9nDDR bit. When the ISSm bit in
ISSR (ISSR16) is cleared to 0 and the IRQmE bit in IER (IER16) of the interrupt controller is set
to 1, this pin functions as the IRQm input pin.
P9nDDR
Pin function
0
P97 input pin
0
0
P96 input pin EXCL input pin
0
P9n input pin
0
1
P97 output pin
IRQ15 input pin
0
1
P96 input pin
IRQm input pin
Rev. 1.00 May 09, 2008 Page 175 of 954
Section 8 I/O Ports
1

SDA0 I/O pin
1

1
 
φ output pin
1
P9n output pin
(n = 5 to 0)
(m = 14 to 12, 2 to 0)
REJ09B0462-0100