ATmega32U2 Atmel Corporation, ATmega32U2 Datasheet - Page 76
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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 12-4
shown in
MISO signal, while MOSI is divided into SPI MSTR OUTPUT and SPI SLAVE INPUT..
Table 12-4.
Table 12-5.
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
Figure 12-5 on page
PB7/OC0A/OC1C/
PCINT7
0
0
0
0
OC0A/OC1C ENABLE
OC0A/OC1C
PCINT7 • PCIE0
1
PCINT7 INPUT
–
PB3/MISO/PCINT3/
PDO
SPE • MSTR
PORTB3 • PUD
SPE • MSTR
0
SPE • MSTR
SPI SLAVE OUTPUT
PCINT3 • PCIE0
1
SPI MSTR INPUT
PCINT3 INPUT
–
and
Overriding Signals for Alternate Functions in PB7..PB4
Overriding Signals for Alternate Functions in PB3..PB0
Table 12-5
relate the alternate functions of Port B to the overriding signals
72. SPI MSTR INPUT and SPI SLAVE OUTPUT constitute the
PB2/MOSI/PCINT2/
PDI
SPE • MSTR
PORTB2 • PUD
SPE • MSTR
0
SPE • MSTR
SPI MSTR OUTPUT
PCINT2 • PCIE0
1
SPI SLAVE INPUT
PCINT2 INPUT
–
PCINT6 • PCIE0
PB6/PCINT6
0
0
0
0
0
0
1
PCINT6 INPUT
–
ATmega8U2/16U2/32U2
PB5/PCINT5
0
0
0
0
0
0
PCINT5 • PCIE0
1
PCINT5 INPUT
–
PB1/SCK/
PCINT1
SPE • MSTR
PORTB1 • PUD
SPE • MSTR
0
SPE • MSTR
SCK OUTPUT
PCINT1 • PCIE0
1
SCK INPUT
PCINT1 INPUT
–
PB4/T1/PCINT4
0
0
0
0
0
0
PCINT4 • PCIE0
1
PCINT4 INPUT
T1 INPUT
–
PB0/SS/PCINT0
SPE • MSTR
PORTB0 • PUD
SPE • MSTR
0
0
0
PCINT0 • PCIE0
1
SPI SS
PCINT0 INPUT
–
76
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