h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 301

• Manufacturer Part Number: h8s-2158
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

ICE
P82DDR
Pin function
ICE
P81DDR
Pin function
ICE
P80DDR
Pin function
P81/ExIRQ9/SDA0
The pin function is switched as shown below according to the combination of the ICE bit in
ICCR of IIC_0 and the P81DDR bit.
When the ISS9 bit in ISSR16 of the interrupt controller is set to 1, this pin can be used as the
ExIRQ9 input pin. To use this pin as the ExIRQ9 input pin, clear the P81DDR bit to 0.
When this pin is used as the P81 output pin, the output format is NMOS push-pull output. The
output format for SDA0 is NMOS open-drain output, and direct bus drive is possible.
P80/ExIRQ8/SCL0
The pin function is switched as shown below according to the combination of the ICE bit in
ICCR of IIC_0 and the P80DDR bit.
When the ISS8 bit in ISSR16 of the interrupt controller is set to 1, this pin can be used as the
ExIRQ8 input pin. To use this pin as the ExIRQ8 input pin, clear the P80DDR bit to 0.
When this pin is used as the P80 output pin, the output format is NMOS push-pull output. The
output format for SCL0 is NMOS open-drain output, and direct bus drive is possible.
P82 input pin
P81 input pin
P80 input pin
0
0
0
0
0
0
ExIRQ10 input pin
ExIRQ9 input pin
ExIRQ8 input pin
P82 output pin
P81 output pin
P80 output pin
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1
Rev. 3.00 Jan 25, 2006 page 249 of 872
SDA0 input/output pin
SCL1 input/output pin
SCL0 input/output pin
Section 9 I/O Ports
REJ09B0286-0300
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