ATmega16U4 Atmel Corporation, ATmega16U4 Datasheet - Page 3
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ATmega16U4
Manufacturer Part Number
ATmega16U4
Description
Manufacturer
Atmel Corporation
Specifications of ATmega16U4
Flash (kbytes)
16 Kbytes
Pin Count
44
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
14
Hardware Qtouch Acquisition
No
Max I/o Pins
26
Ext Interrupts
13
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
2
Twi (i2c)
1
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
12
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
2.1
Eeprom (bytes)
512
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
4
Output Compare Channels
12
Input Capture Channels
2
Pwm Channels
8
32khz Rtc
No
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
1. Pin Configurations
2. Overview
7766FS–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