ATMEGA32U4-AUR Atmel, ATMEGA32U4-AUR Datasheet - Page 3

• Manufacturer Part Number: ATMEGA32U4-AUR
• Description: MCU AVR 16K FLASH 16MHZ 44TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA32U4-AUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 26
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2.5K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1. Pin Configurations
2. Overview
7766F–AVR–11/10
(PDO/PCINT3/MISO) PB3
(PDI/PCINT2/MOSI) PB2
(PCINT1/SCLK) PB1
(INT.6/AIN0) PE6
(SS/PCINT0) PB0
Figure 1-1.
The ATmega16U4/ATmega32U4 is a low-power CMOS 8-bit microcontroller based on the AVR
enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the
ATmega16U4/ATmega32U4 achieves throughputs approaching 1 MIPS per MHz allowing the
system designer to optimize power consumption versus processing speed.
UVcc
UGnd
UCap
VBus
D+
D-
Pinout ATmega16U4/ATmega32U4
10
11
1
2
3
4
5
6
7
8
9
44-pin QFN/TQFP
INDEX CORNER
ATmega32U4
ATmega16U4
33
32
31
30
29
28
27
26
25
24
23
ATmega16/32U4
PE2 (HWB)
PC7 (ICP3/CLK0/OC4A)
PC6 (OC3A/OC4A)
PB6 (PCINT6/OC1B/OC4B/ADC13)
PB5 (PCINT5/OC1A/OC4B/ADC12)
PB4 (PCINT4/ADC11)
PD7 (T0/OC4D/ADC10)
PD6 (T1/OC4D/ADC9)
PD4 (ICP1/ADC8)
AVCC
GND
3