ATmega32U4 Atmel Corporation, ATmega32U4 Datasheet - Page 385

• 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

Table 29-5.
7766F–AVR–11/10
INL
DNL
V
AVCC
V
V
R
R
Symbol
REF
IN
INT
REF
AIN
Parameter
Integral Non-Linearity
Differential Non-Linearity
Gain Error
Offset Error
Reference Voltage
Analog Supply Voltage
Input Voltage
Input Bandwidth
Internal Voltage Reference
Reference Input Resistance
Analog Input Resistance
ADC Characteristics
Condition
V
Gain = 1x/10x/40x, V
ADC clock = 200 kHz
Gain = 200x, V
ADC clock = 200 kHz
V
Gain = 1x/10x/40x, V
ADC clock = 200 kHz
Gain = 200x, V
ADC clock = 200 kHz
V
Gain = 1x/10x/40x, V
ADC clock = 200 kHz
Gain = 200x, V
ADC clock = 200 kHz
V
V
Differential mode
Single Ended Conversion
Differential Conversion
Single ended channels
Differential Conversion
Single Ended Channels
Differential Channels
2.56V
REF
REF
REF
REF
REF
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
CC
CC
CC
CC
CC
= 5V, ADC clock = 200 kHz,
REF
REF
REF
= 4V, ADC clock = 200 kHz
= 4V, ADC clock = 200 kHz
= 4V,ADC clock = 200 kHz
= 4V, ADC clock = 200 kHz
= 4V, V
= 4V, V
= 4V, V
REF
REF
REF
= 4V, V
= 4V, V
= 4V, V
CC
CC
CC
= 5V,
= 5V,
= 5V,
CC
CC
CC
= 5V,
= 5V,
= 5V,
V
CC
GND
2.56
2.56
Min
-2.5
-2.5
-2.0
0.0
0.0
2.4
0
- 0.3
ATmega16/32U4
38.5
2.56
Typ
-1.0
-1.5
-1.8
100
0.5
0.3
0.5
0.4
0.3
0.6
1.5
0.0
32
4
AVCC - 0.5
V
CC
AVCC
AVCC
V
Max
-2.5
-3.0
1.5
1.5
1.5
0.7
1.0
1.0
2.5
2.5
2.0
2.8
REF
+ 0.3
Units
LSB
LSB
LSB
LSB
kHz
MΩ
kΩ
V
V
V
V
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