ATMEGA32U4-AUR Atmel, ATMEGA32U4-AUR Datasheet - Page 75
ATMEGA32U4-AUR
Manufacturer Part Number
ATMEGA32U4-AUR
Description
MCU AVR 16K FLASH 16MHZ 44TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA16U4-MU.pdf
(433 pages)
Specifications of ATMEGA32U4-AUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
26
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2.5K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Manufacturer
Quantity
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10.3.3
7766F–AVR–11/10
Alternate Functions of Port C
Table 10-5.
The Port C alternate function is as follows:
Table 10-6.
• ICP3/CLKO/OC.4A – Port C, Bit 7
ICP3: If Timer 3 is correctly configured, this pin can serve as Input Capture feature.
CLKO: When the corresponding fuse is enabled, this pin outputs the internal microcontroller
working frequency. If the clock prescaler is used, this will affect this output frequency.
OC.4A: Timer 4 Output Compare A. This pin can be used to generate a high-speed PWM signal
from Timer 4 module. The pin has to be configured as an output (DDC7 set “one”) to serve this
function.
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
PB3/PD0/PCINT3/
MISO
SPE • MSTR
PORTB3 • PUD
SPE • MSTR
0
SPE • MSTR
SPI SLAVE OUTPUT
PCINT3 • PCIE0
1
SPI MSTR INPUT
PCINT3 INPUT
–
Port Pin
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
Overriding Signals for Alternate Functions in PB3.PB0
Port C Pins Alternate Functions
Alternate Function
ICP3/CLKO/OC4A(Input Capture Timer 3 or CLK0 (Divided
System Clock) or Output Compare and direct PWM output A
for Timer 4)
OC.3A/OC4A (Output Compare and PWM output A for
Timer/Counter3 or Output Compare and complementary
PWM output A for Timer 4)
Not present on pin-out.
PB2/PDI/PCINT2/
MOSI
SPE • MSTR
PORTB2 • PUD
SPE • MSTR
0
SPE • MSTR
SPI MSTR OUTPUT
PCINT2 • PCIE0
1
SPI SLAVE INPUT
PCINT2 INPUT
–
PB1/PCINT1/
SCK
SPE • MSTR
PORTB1 • PUD
SPE • MSTR
0
SPE • MSTR
SCK OUTPUT
PCINT1 •
PCIE0
1
SCK INPUT
PCINT1 INPUT
–
ATmega16/32U4
PB0/PCINT0/
SS
SPE • MSTR
PORTB0 • PUD
SPE • MSTR
0
0
0
PCINT0 •
PCIE0
1
SPI SS
PCINT0 INPUT
–
75
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