ATmega32U2 Atmel Corporation, ATmega32U2 Datasheet - Page 80
ATmega32U2
Manufacturer Part Number
ATmega32U2
Description
Manufacturer
Atmel Corporation
Specifications of ATmega32U2
Flash (kbytes)
32 Kbytes
Pin Count
32
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
12
Hardware Qtouch Acquisition
No
Max I/o Pins
22
Ext Interrupts
20
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
2
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
1
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
2
Output Compare Channels
5
Input Capture Channels
1
Pwm Channels
4
32khz Rtc
No
Calibrated Rc Oscillator
Yes
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7799D–AVR–11/10
TXD1, USART1 Transmit Data : When the USART1 Transmitter is enabled, this pin is config-
ured as an ouput regardless of DDRD3.
•
INT2, External Interrupt source 2: The PD2 pin can serve as an external interrupt source to the
MCU.
AIN1, Analog Comparator Negative input. This pin is directly connected to the negative input of
the Analog Comparator.
RXD1, USART1 Receive Data : When the USART1 Receiver is enabled, this pin is configured
as an input regardless of DDRD2. When the USART forces this pin to be an input, the pull-up
can still be controlled by the PORTD2 bit.
•
INT1, External Interrupt source 1: The PD1 pin can serve as an external interrupt source to the
MCU.
AIN0, Analog Comparator Positive input. This pin is directly connected to the positive input of
the Analog Comparator.
•
INT0, External Interrupt source 0: The PD0 pin can serve as an external interrupt source to the
MCU.
OC0B, Output Compare Match B output: The PD0 pin can serve as an external output for the
Timer/Counter0 Output Compare. The pin has to be configured as an output (DDD0 set “one”) to
serve this function. The OC0B pin is also the output pin for the PWM mode timer function.
Table 12-10
shown in
INT2/AIN1/RXD1
INT1/AIN0
INT0/OC0B
Figure 12-5 on page
, Bit 1
and
, Bit 0
Table 12-11
, Bit 2
relates the alternate functions of Port D to the overriding signals
72.
ATmega8U2/16U2/32U2
80
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