ATmega16U2 Atmel Corporation, ATmega16U2 Datasheet - Page 78

• Manufacturer Part Number: ATmega16U2
• Manufacturer: Atmel Corporation

Specifications of ATmega16U2

• Flash (kbytes): 16 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 12
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 22
• Ext Interrupts: 21
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 2
• Uart: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 0.5
• 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: 2
• Output Compare Channels: 5
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

7799D–AVR–11/10
Reset, Reset input. External Reset input is active low and enabled by unprogramming ("1") the
RSTDISBL Fuse. Pullup is activated and output driver and digital input are deactivated when the
pin is used as the RESET pin.
dW, debugWire channel. When the debugWIRE Enable (DWEN) Fuse is programmed and Lock
bits are unprogrammed, the debugWIRE system within the target device is activated. The
RESET port pin is configured as a wired -AND (open-drain) bi-directional I/O pin with pull-up
enabled and becomes the communication gateway between the target and the emulator.
• XTAL2, Bit 0
XTAL2, Oscillator. The PC0 pin can serve as Inverting Output for internal Oscillator amplifier.
Table 12-7
shown in
Table 12-7.
Table 12-8.
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
Figure 12-5 on page
and
0
PC7/ICP1/INT4/CLK0
0
0
0
0
0
INT4 ENABLE
1
INT4 INPUT
–
Overriding Signals for Alternate Functions in PC7..PC4
Overriding Signals for Alternate Functions in PC2..PC0
PC2/PCINT11
0
0
0
0
0
0
PCINT11 ENABLE
1
PCINT11 INPUT
–
Table 12-8
relate the alternate functions of Port C to the overriding signals
72.
PC6/PCINT8/
OC1A
0
0
0
0
OC1A ENABLE
OC1A
PCINT8 ENABLE
1
PCINT8 INPUT
–
PC1/RESET/dW
0
0
0
0
0
0
0
0
–
–
ATmega8U2/16U2/32U2
PC5/PCINT9/
OC1B
0
0
0
0
OC1B ENABLE
OC1B
PCINT9 ENABLE
1
PCINT9 INPUT
–
PC0/XTAL2
0
0
0
0
0
0
0
0
–
–
PC4/PCINT10
0
0
0
0
0
0
PCINT10 ENABLE
1
PCINT10 INPUT
–
78