ATmega32U4 Atmel Corporation, ATmega32U4 Datasheet - Page 163

• 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
Table 15-8
are set to Phase and Frequency Correct PWM Mode.
Table 15-8.
Table 15-9
are set to single-slope PWM6 Mode. In the PWM6 Mode the same Waveform Output (OCW4A)
is used for generating all waveforms and the Output Compare values OC4A and OC4A are con-
nected on OC4x and OC4x pins as described below.
Table 15-9.
Table 15-10
are set to dual-slope PWM6 Mode.I
Table 15-10. Compare Output Mode, Dual-Slope PWM6 Mode
• Bits 5,4 - COM4B1, COM4B0: Comparator B Output Mode, Bits 1 and 0
These bits control the behavior of the Waveform Output (OCW4B) and the connection of the
Output Compare pin (OC4B). If one or both of the COM4B1:0 bits are set, the OC4B output
overrides the normal port functionality of the I/O pin it is connected to. The complementary
OC4B output is connected only in PWM modes when the COM4B1:0 bits are set to “01”. Note
COM1A1..0
COM4A1..0
COM4A1..0
00
01
10
11
00
01
10
11
00
01
10
11
shows the COM4A1:0 bit functionality when the PWM4A, WGM40 and WGM41 bits
shows the COM4A1:0 bit functionality when the PWM4A, WGM40 and WGM41 bits
shows the COM4A1:0 bit functionality when the PWM4A, WGM40 and WGM41 bits
Compare Output Mode, Phase and Frequency Correct PWM Mode
Compare Output Mode, Single-Slope PWM6 Mode
OCW1A Behavior
Normal port operation.
Cleared on Compare Match when up-counting.
Set on Compare Match when down-counting.
Cleared on Compare Match when up-counting.
Set on Compare Match when down-counting.
Set on Compare Match when up-counting.
Cleared on Compare Match when down-counting.
OCW4A Behavior
Normal port operation.
Cleared on Compare Match.
Set when TCNT4 = 0x000.
Cleared on Compare Match.
Set when TCNT4 = 0x000.
Set on Compare Match.
Cleared when TCNT4 = 0x000.
OCW4A Behavior
Normal port operation.
Cleared on Compare Match when up-counting.
Set on Compare Match when down-counting.
Cleared on Compare Match when up-counting.
Set on Compare Match when down-counting.
Set on Compare Match when up-counting.
Cleared on Compare Match when down-counting.
ATmega16/32U4
Disconnected
Disconnected
Disconnected
Connected
Connected
Connected
OC4A Pin
OC4x Pin
OC4x Pin
OC4A
OC4A
OC4A
OC4A
OC4A
OC4A
Disconnected
Disconnected
Disconnected
Disconnected
Disconnected
Connected
OC4A Pin
OC4x Pin
OC4x Pin
OC4A
OC4A
OC4A
OC4A
OC4A
OC4A
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