ATmega16U4 Atmel Corporation, ATmega16U4 Datasheet - Page 147
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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
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15.6.1
7766F–AVR–11/10
Compare Output Mode and Waveform Generation
Figure 15-9. Compare Match Output Unit, Schematic
The Waveform Generator uses the COM4x1:0 bits differently in Normal mode and PWM modes.
For all modes, setting the COM4x1:0 = 0 tells the Waveform Generator that no action on the
OCW4x Output is to be performed on the next Compare Match. For compare output actions in
the non-PWM modes refer to
on page
A change of the COM4x1:0 bits state will have effect at the first Compare Match after the bits are
written. For non-PWM modes, the action can be forced to have immediate effect by using the
FOC4x strobe bits.
clk I/O
162, and for the Phase and Frequency Correct PWM refer to
PORTC6
DDRC6
PORTC7
DDRC7
PORTB5
DDRB5
PORTB6
DDRB6
PORTD6
DDRD6
PORTD7
DDRD7
D Q
D Q
D Q
D Q
D Q
D Q
D Q
D Q
D Q
D Q
D Q
D Q
OCW4A
clk Tn
OCW4B
OCW4D
clk Tn
clk Tn
Table 15-6 on page
Generator A
Generator B
Generator D
Dead Time
Dead Time
Dead Time
COM4A1:0
WGM41
OC4OE1:0
WGM41
OC4OE3:2
COM4B1:0
WGM41
OC4OE5:4
COM4D1:0
Q
Q
Q
Q
Q
Q
OC4B
OC4B
OC4A
OC4
OC4D
OC4A
162. For fast PWM mode, refer to
0
1
Output Compare
Pin Configuration
2
1
0
2
1
0
Output Compare
Pin Configuration
Output Compare
Pin Configuration
ATmega16/32U4
1
0
1
0
Table 15-8 on page
1
0
1
0
1
0
1
0
1
0
1
0
Table 15-7
OC4A
OC4A
OC4B
OC4D
OC4B
OC4D
PIN
PIN
PIN
PIN
PIN
PIN
163.
147
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