ATmega 32u4 - pin mapping

 

Atmega 32u4/ Atmega 16u4 mapping

Pin Number Pin Name Mapped Pin Name
1 PE6 (INT.6/AIN0) Digital pin 7
2 UVcc +5V
3 D- RD-
4 D+ RD+
5 UGnd UGND
6 UCap UCAP
7 VUSB VBus
8 (SS/PCINT0) PB0 RXLED
9 (PCINT1/SCLK) PB1 SCK
10 (PDI/PCINT2/MOSI) PB2 MOSI
11 (PDO/PCINT3/MISO) PB3 MISO
12 (PCINT7/OC0A/OC1C/#RTS) PB7 Digital pin 11 (PWM)
13 RESET RESET
14 Vcc +5V
15 GND GND
16 XTAL2 XTAL2
17 XTAL1 XTAL1
18 (OC0B/SCL/INT0) PD0 Digital pin 3 (SCL)(PWM)
19 (SDA/INT1) PD1 Digital pin 2 (SDA)
20 (RX D1/AIN1/INT2) PD2 Digital pin 0 (RX)
21 (TXD1/INT3) PD3 Digital pin 1 (TX)
22 (XCK1/#CTS) PD5 TXLED
23 GND1 GND
24 AVCC AVCC
25 (ICP1/ADC8) PD4 Digital pin 4
26 (T1/#OC4D/ADC9) PD6 Digital pin 12
27 (T0/OC4D/ADC10) PD7 Digital Pin 6 (PWM)
28 (ADC11/PCINT4) PB4 Digital pin 8
29 (PCINT5/OC1A/#OC4B/ADC12) PB5 Digital Pin 9 (PWM)
30 (PCINT6/OC1B/OC4B/ADC13) PB6 Digital Pin 10 (PWM)
31 (OC3A/#0C4A) PC6 Digital Pin 5 (PWM)
32 (ICP3/CLK0/)0C4A) PC7 Digital Pin 13 (PWM)
33 (#HWB) PE2 HWB
34 Vcc1 +5V
35 GND2 GND
36 (ADC7/TDI) PF7 Analog In 0
37 (ADC6/TDO) PF6 Analog In 1
38 (ADC5/TMS) PF5 Analog In 2
39 (ADC4/TCK) PF4 Analog In 3
40 (ADC1) PF1 Analog In 4
41 (ADC0) PF0 Analog In 5
42 AREF AEF
43 GND3 GND
44 AVCC1 AVCC

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