ATmega32U4 Atmel Corporation, ATmega32U4 Datasheet - Page 293
ATmega32U4
Manufacturer Part Number
ATmega32U4
Description
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
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Part Number
Manufacturer
Quantity
Price
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Manufacturer:
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Figure 24-1. Analog to Digital Converter Block Schematic
7766F–AVR–11/10
ADC13
ADC12
ADC11
ADC10
ADC9
ADC8
ADC7
ADC6
ADC5
ADC4
ADC1
ADC0
AREF
AVCC
GND
TEMPERATURE
REFERENCE
REFERENCE
INTERNAL
8-BIT DATA BUS
BANDGAP
SENSOR
INPUT
INPUT
NEG.
MUX
POS.
MUX
ADC MULTIPLEXER
SELECT (ADMUX)
MUX DECODER
+
-
SINGLE ENDED / DIFFERENTIAL SELECTION
DIFFERENTIAL
AMPLIFIER
10-BIT DAC
ADC CTRL. & STATUS
REGISTER (ADCSRA)
ADC CONVERSION
COMPLETE IRQ
PRESCALER
CONVERSION LOGIC
ADTS[3:0]
INTERRUPT
TRIGGER
SELECT
FLAGS
SAMPLE & HOLD
COMPARATOR
ATmega16/32U4
15
ADC DATA REGISTER
+
-
(ADCH/ADCL)
ADC MULTIPLEXER
OUTPUT
ADHSM
0
293
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