ATMEGA32U4-AUR Atmel, ATMEGA32U4-AUR Datasheet - Page 254
ATMEGA32U4-AUR
Manufacturer Part Number
ATMEGA32U4-AUR
Description
MCU AVR 16K FLASH 16MHZ 44TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA16U4-MU.pdf
(433 pages)
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
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Manufacturer
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21.3
21.3.1
7766F–AVR–11/10
Typical Application Implementation
Bus Powered device
Depending on the target application power supply, the ATmega16U4/ATmega32U4 requires dif-
ferent hardware typical implementations.
Figure 21-2. Operating modes versus frequency and power-supply
Figure 21-3. Typical Bus powered application with 5V I/O
VBUS
UVSS
UDP
UDM
UID
VCC min
5.5
4.5
3.6
3.4
3.0
2.7
0
Rs=22
Rs=22
VCC (V)
USB compliant,
with internal regulator
1µF
USB not operational
USB compliant,
without internal regulator
UCAP
VBUS
UGND
D+
D-
UID
UVCC
XTAL1
XTAL2
AVCC
Max
Operating Frequency (MHz)
GND
16 MHz
8 MHz
2 MHz
ATmega16/32U4
VCC
GND
254
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