ATmega32U4 Atmel Corporation, ATmega32U4 Datasheet - Page 155

• Manufacturer Part Number: ATmega32U4
• Manufacturer: Atmel Corporation

Specifications of ATmega32U4

• Flash (kbytes): 32 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): 3.3
• Eeprom (bytes): 1024
• 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

7766F–AVR–11/10
counter value matches the TOP value. The counter is then cleared at the following timer clock
cycle. The TCNT4 value is in the timing diagram shown as a histogram for illustrating the single-
slope operation. The timing diagram includes Output Compare pins OC4A and OC4A, and the
corresponding Output Compare Override Enable bits (OC4OE1..OC4OE0).
Figure 15-15. PWM6 Mode, Single-slope Operation, Timing Diagram
The general I/O port function is overridden by the Output Compare value (OC4x / OC4x) from
the Dead Time Generator if either of the COM4x1:0 bits are set. The Output Compare pins can
also be overridden by the Output Compare Override Enable bits OC4OE5..OC4OE0. If an Over-
ride Enable bit is cleared, the actual value from the port register will be visible on the port pin
and, if the Override Enable bit is set, the Output Compare pin is allowed to be connected on the
port pin. The Output Compare Pin configurations are described in
Table 15-5.
TCNT4
OCW4A
OC4A Pin
OC4OE1
OC4A Pin
OC4B Pin
OC4B Pin
OC4D Pin
OC4OE0
OC4OE2
OC4OE3
OC4OE4
OC4D Pin
OC4OE5
COM4A1
0
0
1
1
COM4B1
0
0
Output Compare Pin configurations in PWM6 Mode
COM4A0
0
1
0
1
COM4B0
0
1
OC4A Pin (PC6)
Disconnected
OC4A •
OC4A •
OC4A •
OC4B Pin (PB5)
Disconnected
OC4A •
OC4OE0
OC4OE0
OC4OE0
OC4OE2
ATmega16/32U4
Table
OC4A Pin (PC7)
Disconnected
OC4A •
OC4A •
OC4A •
OC4B Pin (PB6)
Disconnected
OC4A •
15-5.
OC4OE1
OC4OE1
OC4OE1
OC4OE3
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