
Rev.1.00
Oct 26, 2004
page 4 of 79
3883 Group
Functions
Name
Pin
P40
P41
8-bit I/O port with the same function as port P0
<Input level>
CMOS compatible input level
<Output level>
P40, P41 : CMOS 3-state output structure
P42-P47 : CMOS 3-state output structure or N-
channel open-drain output structure
Each pin level of P42 to P46 can be read even in
output port mode.
Function except a port function
Table 2 Pin description (2)
8-bit I/O port with the same function as port P0
CMOS compatible input level
CMOS 3-state output structure
8-bit I/O port with the same function as port P0
CMOS compatible input level.
CMOS 3-state output structure.
8-bit CMOS I/O port with the same function as port P0
<Input level>
P70–P75 : CMOS compatible input level or
TTL compatible input level
P76, P77 : CMOS compatible input level or
SMBUS input level in the I2C-BUS
interface function,
<Output structure>
N-channel open-drain output structure
Each pin level of P70 to P75 can be read even in
output port mode.
8-bit CMOS I/O port with the same function as port
P0
CMOS compatible input level.
CMOS 3-state output structure.
I/O port P4
P42/INT0
P43/INT1
P44/PWM4
P45/PWM5
P46
Interrupt input pins
PWM output pins
P47
/CLKRUN
Serialized IRQ function pin
P56/PWM2
P57/PWM3
P50/INT5
P51/INT20
P52/INT30
P53/INT40
P54/CNTR0
P55/CNTR1
I/O port P5
Interrupt input pins
Timer X, timer Y function pins
PWM output pins
P60/AN0–P67/AN7
P70
P71
P72
P76/SDA
P77/SCL
I/O port P6
I/O port P7
A/D converter input pins
Interrupt input pins
I2C-BUS interface function pins
P73/INT21
P74/INT31
P75/INT41
I/O port P8
P80/LAD0
P81/LAD1
P82/LAD2
P83/LAD3
P84/LFRAME
P85/LRESET
P86/LCLK
P87/SERIRQ
Serialized IRQ function pin
LPC interface function pins