ATmega32U4 Atmel Corporation, ATmega32U4 Datasheet - Page 309

• 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 24-4.
MUX5..0
010001
010010
010011
010100
010101
010110
010111
011000
011001
011010
011011
011100
011101
011110
011111
100000
100001
100010
100011
100100
100101
100110
100111
101000
101001
101010
101011
101100
101101
101110
101111
110000
110001
110010
110011
(1)
Single Ended Input
N/A
1.1V (V
0V (GND)
ADC8
ADC9
ADC10
ADC11
ADC12
ADC13
N/A
Temperature Sensor
N/A
Input Channel and Gain Selections (Continued)
Band Gap
)
Positive Differential Input
N/A
ADC4
ADC5
ADC6
ADC7
N/A
ADC1
ADC4
ADC5
ADC6
ADC7
ADC4
ADC5
ADC6
ADC7
ADC4
ADC5
ADC6
ADC7
Negative Differential Input
ADC1
ADC1
ADC1
ADC1
ADC0
ADC0
ADC0
ADC0
ADC0
ADC1
ADC1
ADC1
ADC1
ADC0
ADC0
ADC0
ADC0
ATmega16/32U4
Gain
1x
1x
1x
1x
40x
10x
10x
10x
10x
10x
10x
10x
10x
40x
40x
40x
40x
309