Datasheet

2
ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [SUMMARY]
8285ES–AVR–02/2013
1. Pin configurations
1.1 Pinout - TQFP and QFN/MLF
Figure 1-1. 64A (TQFP)and 64M1 (QFN/MLF) pinout Atmel
ATmega165A/ATmega165PA/ATmega325A/ATmega325PA/ATmega645A/ATmega645P.
Note: The large center pad underneath the QFN/MLF packages is made of metal and internally connected to GND. It should be sol-
dered or glued to the board to ensure good mechanical stability. If the center pad is left unconnected, the package might loosen
from the board.
64 63 62
47
46
48
45
44
43
42
41
40
39
38
37
36
35
33
34
2
3
1
4
5
6
7
8
9
10
11
12
13
14
16
15
17
61 60
18
59
20
58
19 21
57
22
56
23
55
24
54
25
53
26
52
27
51
29 28
50 49
32 31 30
PC0
VCC GND PF0 (ADC0) PF7 (ADC7/TDI) PF1 (ADC1) PF2 (ADC2) PF3 (ADC3) PF4 (ADC4/TCK) PF5 (ADC5/TMS) PF6 (ADC6/TDO) AREF GND AVCC
(RXD/PCINT0) PE0
(TXD/PCINT1) PE1
DNC
(XCK/AIN0/PCINT2) PE2
(AIN1/PCINT3) PE3
(USCK/SCL/PCINT4) PE4
(DI/SDA/PCINT5) PE5
(DO/PCINT6) PE6
(CLKO/PCINT7) PE7
(SS/PCINT8) PB0
(SCK/PCINT9) PB1
(MOSI/PCINT10) PB2
(MISO/PCINT11) PB3
(OC0A/PCINT12) PB4
(OC2A/PCINT15) PB7
(T1) PG3
(OC1B/PCINT14) PB6
(T0) PG4
(OC1A/PCINT13) PB5
PC1
PG0
PD7
PC2
PC3
PC4
PC5
PC6
PC7
PA7
PG2
PA6
PA5
PA4
PA3
PA0 PA1 PA2
PG1
PD6
PD5
PD4 PD3 PD2
(INT0) PD1
(ICP1) PD0
(TOSC1) XTAL1 (TOSC2) XTAL2
RESET/PG5
GND
VCC
INDEX CORNER