ATmega32U2 Atmel Corporation, ATmega32U2 Datasheet - Page 81
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
Table 12-10. Overriding Signals for Alternate Functions PD7..PD4
Table 12-11. Overriding Signals for Alternate Functions in PD3..PD0
Note:
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
1. When enabled, the 2-wire Serial Interface enables Slew-Rate controls on the output pins PD0
and PD1. This is not shown in this table. In addition, spike filters are connected between the
AIO outputs shown in the port figure.
PD3/INT3/TXD1
TXEN1
0
TXEN1
1
TXEN1
TXD1
INT3 ENABLE
1
INT3 INPUT
–
PD7/T0/INT7/
HBW/CTS
CTS
PORTD7 •
PUD
CTS
0
0
0
INT7/CTS
ENABLE
1
T0 INPUT
INT7 INPUT
CTS INPUT
–
PD6/INT6/
RTS
RTS
0
RTS
1
RTS
OUTPUT
ENABLE
RTS
OUTPUT
INT6
ENABLE
1
INT6 INPUT
–
PD2/INT2/RXD1/
AIN1
RXEN1
PORTD2 • PUD
RXEN1
0
0
0
INT2 ENABLE
AIN1 ENABLE
AIN1 ENABLE
INT2 INPUT/RXD1
AIN1 INPUT
PD5/XCK/PCINT12
0
0
0
0
XCK OUTPUT ENABLE
XCK1 OUTPUT
PCINT12 ENABLE
1
XCK INPUT
PCINT12 INPUT
–
ATmega8U2/16U2/32U2
PD1/INT1/AIN0
0
0
0
0
0
0
INT1 ENABLE
AIN0 ENABLE
AIN0 ENABLE
INT1 INPUT
AIN0 INPUT
(1)
PD0/INT0/OC0B
0
0
0
0
OC0B ENABLE
OC0B
INT0 ENABLE
1
INT0 INPUT
–
PD4/INT5
0
0
0
0
0
0
INT5
ENABLE
1
INT5 INPUT
–
81
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