ATmega32U4 Notes


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ATmega32U4
General
Physical Logical Function Description
3   D- USB
4   D+ USB
5   UGnd  
6   UCap  
7   VBUS +5V
13   RESET  
14   VCC +5V
15   GND  
16   XTAL2  
17   XTAL1  
24   AVCC +5V
34   VCC +5V
35   GND  
42   AREF  
43   AGND  
44   AVCC +5V
Port B
Physical Logical Function Description
8 d17 SS SPI
9 d15 SCK SPI
10 d16 MOSI SPI
11 d14 MISO SPI
28 a8/d8    
29 a9/d9 PWM  
30 a10/d10 PWM  
12 d11 RTS USART
Port C
Physical Logical Function Description
31 d5 PWM  
32 d13 PWM  
Port D
Physical Logical Function Description
18 d3 SCL TWI
19 d2 SDA TWI
20 d0 RX USART
21 d1 TX USART
25 a6/d4    
22   CTS USART
26 d12    
27 a7/d6    
Port E
Physical Logical Function Description
33   HWB  
1 d7    
Port F
Physical Logical Function Description
41 a5 ADC0  
40 a4 ADC1  
39 a3 TCK JTAG
38 a2 TMS JTAG
37 a1 TDO JTAG
36 a0 TDI JTAG


Copyright © 2017, 2018, 2019, 2020
Craig Leres