ATMEGA169 ATMEL [ATMEL Corporation], ATMEGA169 Datasheet - Page 70
ATMEGA169
Manufacturer Part Number
ATMEGA169
Description
8-bit Microcontroller with 16K Bytes In-System Programmable Flash
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.ATMEGA169.pdf
(365 pages)
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Alternate Functions of Port E
70
ATmega169/V
The Port E pins with alternate functions are shown in Table 39.
Table 39. Port E Pins Alternate Functions
• PCINT7 – Port E, Bit 7
PCINT7, Pin Change Interrupt Source 7: The PE7 pin can serve as an external interrupt
source.
CLKO, Divided System Clock: The divided system clock can be output on the PE7 pin.
The divided system clock will be output if the CKOUT Fuse is programmed, regardless
of the PORTE7 and DDE7 settings. It will also be output during reset.
• DO/PCINT6 – Port E, Bit 6
DO, Universal Serial Interface Data output.
PCINT6, Pin Change Interrupt Source 6: The PE6 pin can serve as an external interrupt
source.
• DI/SDA/PCINT5 – Port E, Bit 5
DI, Universal Serial Interface Data input.
SDA, Two-wire Serial Interface Data:
PCINT5, Pin Change Interrupt Source 5: The PE5 pin can serve as an external interrupt
source.
• USCK/SCL/PCINT4 – Port E, Bit 4
USCK, Universal Serial Interface Clock.
SCL, Two-wire Serial Interface Clock.
PCINT4, Pin Change Interrupt Source 4: The PE4 pin can serve as an external interrupt
source.
• AIN1/PCINT3 – Port E, Bit 3
AIN1 – Analog Comparator Negative input. This pin is directly connected to the negative
input of the Analog Comparator.
PCINT3, Pin Change Interrupt Source 3: The PE3 pin can serve as an external interrupt
source.
Port Pin
PE7
PE6
PE5
PE4
PE3
PE2
PE1
PE0
Alternate Function
PCINT7 (Pin Change Interrupt7)
CLKO (Divided System Clock)
DO/PCINT6 (USI Data Output or Pin Change Interrupt6)
DI/SDA/PCINT5 (USI Data Input or TWI Serial DAta or Pin Change Interrupt5)
USCK/SCL/PCINT4 (USART External Clock Input/Output or TWI Serial Clock or
Pin Change Interrupt4)
AIN1/PCINT3 (Analog Comparator Negative Input or Pin Change Interrupt3)
XCK/AIN0/ PCINT2 (USART External Clock or Analog Comparator Positive Input
or Pin Change Interrupt2)
TXD/PCINT1 (USART Transmit Pin or Pin Change Interrupt1)
RXD/PCINT0 (USART Receive Pin or Pin Change Interrupt0)
2514P–AVR–07/06
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