
38
Chapter 1
Introduction
User’s Manual U16702EE3V2UD00
Table 1-2:
Port Functions and Control Function
Port
I/O
Port
Function
Control Function
P0
7-bit I/O
General-
purpose
port
Serial interface I/O, external interrupt
P1
3-bit I/O
External interrupt, Timer I/O
P3
9-bit I/O
External interrupt, serial interface I/O, timer I/O
P4
3-bit I/O
Serial interface I/O
P5
6-bit I/O
Timer I/O, Serial interface I/O
P7
16-bit I/O
A/D converter analog input
P9
16-bit I/O
Serial interface I/O, timer I/O, external interrupt, clock output, on chip debug I/O
PCS
2-bit I/O
Chip select signal
PCM
4-bit I/O
External bus interface
PCT
4-bit I/O
External bus interface
PDL
14-bit I/O
External address/data bus
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