Datasheet

Section 7 I/O Ports
Rev. 3.00 Sep. 28, 2009 Page 138 of 910
REJ09B0350-0300
Function
Port Description Bit I/O Input Output
Input Pull-
up MOS
Function
LED Drive
Capability
(5 mA Sink
Current)
On-Chip
Noise
Canceller
7 ⎯ P77/AN7 ⎯
6 ⎯ P76/AN6 ⎯
5 ⎯ P75/AN5 ⎯
4 ⎯ P74/AN4 ⎯
3 ⎯ P73/AN3 ⎯
2 ⎯ P72/AN2 ⎯
1 ⎯ P71/AN1 ⎯
Port 7 General input
port also
functioning as
A/D converter
analog input
0 ⎯ P70/AN0 ⎯
⎯ ⎯ ⎯
6 P86/SCK1/
SCL1
IRQ5 ⎯
5 P85 RxD1/IRQ4 ⎯
4 P84 IRQ3 TxD1
3 P83 LPCPD ⎯
2 P82/CLKRUN ⎯ ⎯
1 P81/GA20 ⎯ ⎯
Port 8 General I/O
port also
functioning as
interrupt
input, IIC_1,
SCI_1, and
LPC
inputs/outputs
0 P80/PME ⎯ ⎯
⎯ ⎯ ⎯
7 P97/SDA0 IRQ15 ⎯
6 P96 EXCL φ
5 P95 IRQ14 ⎯
4 P94 IRQ13 ⎯
3 P93 IRQ12 ⎯
2 P92 IRQ0 ⎯
Port 9 General I/O
port also
functioning as
external sub-
clock,
interrupt
input, IIC_0
input/output,
and system
clock output
1 P91 IRQ1 ⎯
O
(P95 to
P90)
⎯ ⎯
0 P90 IRQ2 ⎯