Atmel ATmega328P Xplained Mini MEGA328P-XMINI MEGA328P-XMINI Data Sheet
Product codes
MEGA328P-XMINI
84
ATmega48A/PA/88A/PA/168A/PA/328/P [DATASHEET]
Atmel-8271H-AVR- ATmega-Datasheet_08/2014
input of the inverting Oscillator amplifier. In this mode, a crystal Oscillator is connected to this pin, and the pin
can not be used as an I/O pin.
can not be used as an I/O pin.
PCINT6: Pin Change Interrupt source 6. The PB6 pin can serve as an external interrupt source.
If PB6 is used as a clock pin, DDB6, PORTB6 and PINB6 will all read 0.
• SCK/PCINT5 – Port B, Bit 5
SCK: Master Clock output, Slave Clock input pin for SPI channel. When the SPI is enabled as a Slave, this pin
is configured as an input regardless of the setting of DDB5. When the SPI is enabled as a Master, the data
direction of this pin is controlled by DDB5. When the pin is forced by the SPI to be an input, the pull-up can still
be controlled by the PORTB5 bit.
is configured as an input regardless of the setting of DDB5. When the SPI is enabled as a Master, the data
direction of this pin is controlled by DDB5. When the pin is forced by the SPI to be an input, the pull-up can still
be controlled by the PORTB5 bit.
PCINT5: Pin Change Interrupt source 5. The PB5 pin can serve as an external interrupt source.
• MISO/PCINT4 – Port B, Bit 4
MISO: Master Data input, Slave Data output pin for SPI channel. When the SPI is enabled as a Master, this pin
is configured as an input regardless of the setting of DDB4. When the SPI is enabled as a Slave, the data
direction of this pin is controlled by DDB4. When the pin is forced by the SPI to be an input, the pull-up can still
be controlled by the PORTB4 bit.
is configured as an input regardless of the setting of DDB4. When the SPI is enabled as a Slave, the data
direction of this pin is controlled by DDB4. When the pin is forced by the SPI to be an input, the pull-up can still
be controlled by the PORTB4 bit.
PCINT4: Pin Change Interrupt source 4. The PB4 pin can serve as an external interrupt source.
• MOSI/OC2/PCINT3 – Port B, Bit 3
MOSI: SPI Master Data output, Slave Data input for SPI channel. When the SPI is enabled as a Slave, this pin
is configured as an input regardless of the setting of DDB3. When the SPI is enabled as a Master, the data
direction of this pin is controlled by DDB3. When the pin is forced by the SPI to be an input, the pull-up can still
be controlled by the PORTB3 bit.
is configured as an input regardless of the setting of DDB3. When the SPI is enabled as a Master, the data
direction of this pin is controlled by DDB3. When the pin is forced by the SPI to be an input, the pull-up can still
be controlled by the PORTB3 bit.
OC2, Output Compare Match Output: The PB3 pin can serve as an external output for the Timer/Counter2
Compare Match. The PB3 pin has to be configured as an output (DDB3 set (one)) to serve this function. The
OC2 pin is also the output pin for the PWM mode timer function.
Compare Match. The PB3 pin has to be configured as an output (DDB3 set (one)) to serve this function. The
OC2 pin is also the output pin for the PWM mode timer function.
PCINT3: Pin Change Interrupt source 3. The PB3 pin can serve as an external interrupt source.
• SS/OC1B/PCINT2 – Port B, Bit 2
SS: Slave Select input. When the SPI is enabled as a Slave, this pin is configured as an input regardless of the
setting of DDB2. As a Slave, the SPI is activated when this pin is driven low. When the SPI is enabled as a
Master, the data direction of this pin is controlled by DDB2. When the pin is forced by the SPI to be an input, the
pull-up can still be controlled by the PORTB2 bit.
setting of DDB2. As a Slave, the SPI is activated when this pin is driven low. When the SPI is enabled as a
Master, the data direction of this pin is controlled by DDB2. When the pin is forced by the SPI to be an input, the
pull-up can still be controlled by the PORTB2 bit.
OC1B, Output Compare Match output: The PB2 pin can serve as an external output for the Timer/Counter1
Compare Match B. The PB2 pin has to be configured as an output (DDB2 set (one)) to serve this function. The
OC1B pin is also the output pin for the PWM mode timer function.
Compare Match B. The PB2 pin has to be configured as an output (DDB2 set (one)) to serve this function. The
OC1B pin is also the output pin for the PWM mode timer function.
PCINT2: Pin Change Interrupt source 2. The PB2 pin can serve as an external interrupt source.
• OC1A/PCINT1 – Port B, Bit 1
OC1A, Output Compare Match output: The PB1 pin can serve as an external output for the Timer/Counter1
Compare Match A. The PB1 pin has to be configured as an output (DDB1 set (one)) to serve this function. The
OC1A pin is also the output pin for the PWM mode timer function.
Compare Match A. The PB1 pin has to be configured as an output (DDB1 set (one)) to serve this function. The
OC1A pin is also the output pin for the PWM mode timer function.
PCINT1: Pin Change Interrupt source 1. The PB1 pin can serve as an external interrupt source.