ATmega32U4 Notes
- 32K Flash program memory (28K usable)
- 2.5K SRAM
- 1K EEPROM
- USB 2.0 device
- Four 16 bit resolution PWM Channels
- Six 11 bit resolution PWM Channels
- One 8-bit Timer/Counter
- Two 16-bit Timer/Counters
- Tweleve channel 10-bit ADC
- One Serial USART
- One Master/Slave SPI Serial Interface
- JTAG Interface
- One 2-wire Serial Interface (Philips I2C compatible)
Links
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 |
30 |
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, 2022
Craig Leres