51
LQFP
QFP
Pin Name
Circuit Type
Function
P71
General-purpose I/O port
26
28
SOT0
F
(CMOS)
The pin functions as an UART data output pin.
P72
General-purpose I/O port
27
29
SCK0
G
(CMOS/H)
The pin functions as an UART clock I/O pin.
P73
General-purpose I/O port
28
30
TIN0
G
(CMOS/H)
The pin functions as the event input pin of the 16-bit reload timer.
P74
General-purpose I/O port
29
31
TOT0
F
(CMOS/H)
The pin functions as the output pin of the 16-bit reload timer.
P75
General-purpose I/O port
30
32
PWC2
G
(CMOS/H)
The pin functions as a PWC input pin.
P76
General-purpose I/O port
31
33
SCL
I
(NMOS/H)
The pin functions as the I
2
C interface data I/O pin.
While the I
2
C interface is operating, set the port output to Hi-Z.
P77
General-purpose I/O port
32
34
SDA
I
(NMOS/H)
The pin functions as the I
2
C interface clock I/O pin.
While the I
2
C interface is operating, set the port output to Hi-Z.
P80, P81
General-purpose I/O port
45
46
47
48
IRQ0, IRQ1
E
(CMOS/H)
The pins function as external interrupt input pins.
P82 to P87
General-purpose I/O port
50 to 55
52 to 57
IRQ2 to IRQ7
E
(CMOS/H)
The pins function as external interrupt input pins.
P90
General-purpose I/O port
SIN1
The pin functions as the simple serial I/O data input pin.
56
58
CS0
E
(CMOS/H)
Chip select 0
P91
General-purpose I/O port
SOT1
The pin functions as the I/O clock I/O pins.
57
59
CS1
D
(CMOS)
Chip Select 1
P92
General-purpose I/O port
SCK1
The pin functions as the SCI clock I/O pin.
58
60
CS2
E
(CMOS/H)
Chip Select 2
P93
General-purpose I/O port
FRCK
The pin functions as the external clock input pin while the free-running
timer is in use.
ADTG
The pin functions as the external trigger input pin while the A/D
converter is in use.
59
61
CS3
E
(CMOS/H)
Chip Select 3
P94
General-purpose I/O port
60
62
PPG4
D
(CMOS/H)
The pin functions as a PPG timer output pin.
P95
General-purpose I/O port
61
63
PPG5
D
(CMOS)
The pin functions as a PPG timer output pin.
P96
General-purpose I/O port
62
64
IN0
E
(CMOS/H)
The pin is captured as the input capture ch0 trigger input pin.
P97
General-purpose I/O port
63
65
IN1
E
(CMOS/H)
The pin is captured as the input capture ch1 trigger input pin.
PA0 to PA3
General-purpose I/O port
64 to 67
66 to 69
OUT0 to OUT3
D
(CMOS)
The pins function as the output-compare event output pins.
33
35
AVCC
-
Pin for power supply to A/D converter
34
36
AVRH
-
Pin for external reference power supply to A/D converter
35
37
AVSS
-
Pin for power supply to A/D converter
47 to 49
49 to 51
MD0 to MD2
J
(CMOS/H)
Input pins for selecting operation mode
82
84
VCC3
-
Pin for power supply 3.3 V
±
0.3 V (VCC3)
21
23
VCC5
-
Amphibious pin for power supply 3.3 V
±
0.3 V/5.0 V
±
0.5 (VCC5)
9
40
79
11
42
81
VSS
-
Pins for input for power (GND)