2
atmega640/1280/1281/2560/2561
2549a–avr–03/05
管脚 配置
图示 1.
引脚 atmega640/1280/2560
地
VCC
pa0 (ad0)
pa1 (ad1)
pa2 (ad2)
pa3 (ad3)
pa4 (ad4)
pa5 (ad5)
pa6 (ad6)
pa7 (ad7)
pg2 (ale)
AVCC
地
AREF
pf0 (adc0)
pf1 (adc1)
pf2 (adc2)
pf3 (adc3)
pf4 (adc4/tck)
pf5 (adc5/tms)
pf6 (adc6/tdo)
pf7 (adc7/tdi)
atmega640/12
8
0/2560
100
99 9
8
9
7
9
6
9
5
9
4
9
3
9
2
9
1
9
0 8
9
88 87 86 85 84 83 82 81 80 7
9
78 77 76
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1
9
20
21
22
23
24
25
75
74
73
72
71
70
6
9
68
67
66
65
64
63
62
61
60
5
9
58
57
56
55
54
53
52
51
26 28 2
9
3127 3630 32 35 3733 34 38 3
9
40 41 42 43 44 45 46 47 48 4
9
50
pk0 (adc8/pcint16)
pk1 (模数转换器
9
/pcin
t17)
pk2 (adc10/pcint18)
pk3 (adc11/pcint1
9
)
pk4 (adc12/pcint20)
pk5 (adc13/pcint21)
pk6 (adc14/pci
nt22)
pk7 (adc15/pci
nt23)
(oc2b) ph6
(tosc2) pG3
(tosc1) p
G4
重置
(t4) ph7
(icp4) pl0
VCC
地
XTAL2
XTAL1
PL6
PL7
地
VCC
(oc0b) pg5
VCC
地
(rxd2) ph0
(txd2) ph1
(xck2) ph2
(oc4a) ph3
(oc4b) ph4
(oc4c) ph5
(rxd0/pcint8) pe0
(txd0) pe1
(xck0/ain0) pe2
(oc3a/ain1) pe3
(oc3b/int4) pe4
(oc3c/int5) pe5
(t3/int6) pe6
(clko/icp3/int7) pe7
(ss/pcint0) pb0
(sck/pcint1) pb1
(mosi/pcint2) pb2
(miso/pcint3) pb3
(oc2a/pcint4) pb4
(oc1a/pcint5) pb5
(oc1b/pcint6) pb6
(
oc0a/oc1c/pcint7) pb7
pc7 (a15)
pc6 (a14)
pc5 (a13)
pc4 (a12)
pc3 (a11)
pc2 (a10)
pc1 (一个
9
)
pc0 (a8)
pg1 (rd)
pg0 (wr)
(txd1/int3) pd3
(icp1) pD4
(xck1) pd5
(t1) pd6
(t0) pd7
(scl/int0) pd0
(sda/int1) pd1
(rxd1/int2) pd2
(icp5) pl1
(t5) pl2
(oc5a) pl3
(oc5b) pl4
pj6 (pcint15)
pj5 (pcint14)
pj4 (pcint13)
pj3 (pcint12)
pj2 (xck3/pcint11)
pj1 (txd3/pcint10)
pj0 (rxd3/pcint
9
)
PJ7
(oc5c) pl5
index corner