Table of Contents
Advertisement
Type
Symbol
A/D converter
AN15 to AN0 Input
ADTRG
AVCC
AVSS
Vref
I/O ports
P17 to P10
P37 to P30
P47 to P40
P77 to P70
P97 to P90
PA3 to PA0
PB7 to PB0
PC7 to PC0
PD7 to PD0
46
I/O
Name and Function
Analog 15 to 0: Analog input pins.
Input
A/D conversion external trigger input: Pin for input of
an external trigger to start A/D conversion.
Input
A/D converter power supply pin.
When the A/D converter are not used, this pin should
be connected to the system power supply (+5 V).
Input
Analog circuit ground and reference voltage
A/D converter ground and reference voltage.
Connect to system power supply (0 V).
Input
A/D converter reference voltage input pin.
When the A/D converter are not used, this pin should
be connected to the system power supply (+5 V).
I/O
Port 1: An 8-bit I/O port. Input or output can be
designated for each bit by means of the port 1 data
direction register (P1DDR).
I/O
Port 3: An 8-bit I/O port. Input or output can be
designated for each bit by means of the port 3 data
direction register (P3DDR).
Input
Port 4: An 8-bit input port.
I/O
Port 7: An 8-bit I/O port. Input or output can be
designated for each bit by means of the port 7 data
direction register (P7DDR).
Input
Port 9: An 8-bit input port.
I/O
Port A: A 4-bit I/O port. Input or output can be
designated for each bit by means of the port A data
direction register (PADDR).
I/O
Port B: An 8-bit I/O port. Input or output can be
designated for each bit by means of the port B data
direction register (PBDDR).
I/O
Port C: An 8-bit I/O port. Input or output can be
designated for each bit by means of the port C data
direction register (PCDDR).
I/O
Port D: An 8-bit I/O port. Input or output can be
designated for each bit by means of the port D data
direction register (PDDDR).
Advertisement
Table of Contents
