ATMEGA16U2-16AU Atmel, ATMEGA16U2-16AU Datasheet - Page 79
ATMEGA16U2-16AU
Manufacturer Part Number
ATMEGA16U2-16AU
Description
8-bit Microcontrollers - MCU 16K Flash
Manufacturer
Atmel
Datasheet
1.ATMEGA16U2-16AU.pdf
(310 pages)
Specifications of ATMEGA16U2-16AU
Product Category
8-bit Microcontrollers - MCU
Rohs
yes
Core
AVR
Data Bus Width
8 bit
Program Memory Size
16 KB
Data Ram Size
1.25 KB
Data Rom Size
512 B
Program Memory Type
Flash
Factory Pack Quantity
1250
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12.3.3
7799D–AVR–11/10
Alternate Functions of Port D
The Port D pins with alternate functions are shown in
Table 12-9.
The alternate pin configuration is as follows:
•
HWB, Hardware Boot : The PD7 pin can serve as
TO, Timer/Counter0 counter source.
INT7, External Interrupt source 7: The PD7 pin can serve as an external interrupt source to the
MCU.
CTS, USART1 Transmitter Flow Control. This pin can control the transmitter in function of its
state.
•
INT6, External Interrupt source 6: The PD6 pin can serve as an external interrupt source to the
MCU.
RTS, USART1 Receiver Flow Control. This pin can control the receiver in function of its state.
•
XCK1, USART1 External Clock : The data direction register DDRD5 controls whether the clock
is output (DDRD5 set) or input (DDRD5 cleared). The XCK1 pin is active only when the USART1
operates in Synchronous Mode.
PCINT12, Pin Change Interrupt source 12: The PD5 pin can serve as an external interrupt
source.
•
INT5, External Interrupt source 5: The PD4 pin can serve as an external interrupt source to the
MCU.
•
INT3, External Interrupt source 3: The PD3 pin can serve as an external interrupt source to the
MCU.
HWB/TO/INT7/CTS
INT6/RTS
XCK1/PCINT12
INT5
INT3/TXD1
Port Pin
PD7
PD6
PD5
PD4
PD3
PD2
PD1
PD0
, Bit 4
,Bit 6
, Bit 3
Port D Pins Alternate Functions
Alternate Function
HWB/TO/INT7/CTS
INT6/RTS
XCK1/PCINT12 (USART1 External Clock Input/Output)
INT5
INT3/TXD1 (External Interrupt3 Input or USART1 Transmit Pin)
INT2/AIN1/RXD1(External Interrupt2 Input or USART1 Receive Pin)
INT1/AIN0 (External Interrupt1 Input)
INT0/OC0B (External Interrupt0 Input)
, Bit 5
, Bit 7
ATmega8U2/16U2/32U2
Table
12-9.
79
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