ATmega32U4 Atmel Corporation, ATmega32U4 Datasheet - Page 76

• 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
• OC.3A/OC.4A – Port C, Bit 6
OC.3A: Timer 3 Output Compare A. This pin can be used to generate a PWM signal from Timer
3 module.
OC.4A: Timer 4 Output Compare A. This pin can be used to generate a high-speed PWM signal
from Timer 4 module, complementary to OC.4A (PC7) signal. The pin has to be configured as an
output (DDC6 set “one”) to serve this function.
Table 10-7
on page
Table 10-7.
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
70.
relate the alternate functions of Port C to the overriding signals shown in
PC7/ICP3/CLKO/OC.4
A
SRE • (XMM<1)
0
SRE • (XMM<1)
1
SRE • (XMM<1)
A15
0
0
ICP3 input
–
Overriding Signals for Alternate Functions in PC7.PC6
PC6/OC.3A/OC.4A
SRE •
(XMM<2)|OC3A
enable
0
SRE • (XMM<2)
1
SRE • (XMM<2)
if (SRE.XMM<2)
then A14
else OC3A
0
0
–
–
ATmega16/32U4
Figure 10-5
76