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ATmega3290P Datasheet(PDF) 71 Page - ATMEL Corporation

Part # ATmega3290P
Description  8-bit Microcontroller with 32K Bytes In-System Programmable Flash
PDF  385 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega3290P Datasheet(HTML) 71 Page - ATMEL Corporation

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71
8021E–AVR–07/09
ATmega329P/3290P
13.3.2
Alternate Functions of Port B
The Port B pins with alternate functions are shown in Table 13-6.
The alternate pin configuration is as follows:
• OC2A/PCINT15, Bit 7
OC2, Output Compare Match A output: The PB7 pin can serve as an external output for the
Timer/Counter2 Output Compare A. The pin has to be configured as an output (DDB7 set (one))
to serve this function. The OC2A pin is also the output pin for the PWM mode timer function.
PCINT15, Pin Change Interrupt source 15: The PB7 pin can serve as an external interrupt
source.
Table 13-5.
Overriding Signals for Alternate Functions in PA3:PA0
Signal Name
PA3/COM3
PA2/COM2
PA1/COM1
PA0/COM0
PUOE
LCDEN •
(LCDMUX)
LCDEN •
(LCDMUX)
LCDEN •
(LCDMUX)
LCDEN
PUOV
00
00
DDOE
LCDEN •
(LCDMUX)
LCDEN •
(LCDMUX)
LCDEN •
(LCDMUX)
LCDEN
DDOV
0
0
0
0
PVOE
00
00
PVOV
00
00
PTOE
––
––
DIEOE
LCDEN •
(LCDMUX)
LCDEN •
(LCDMUX)
LCDEN •
(LCDMUX)
LCDEN
DIEOV
0
0
0
0
DI
––
––
AIO
COM3COM2COM1COM0
Table 13-6.
Port B Pins Alternate Functions
Port Pin
Alternate Functions
PB7
OC2A/PCINT15 (Output Compare and PWM Output A for Timer/Counter2 or Pin
Change Interrupt15).
PB6
OC1B/PCINT14 (Output Compare and PWM Output B for Timer/Counter1 or Pin
Change Interrupt14).
PB5
OC1A/PCINT13 (Output Compare and PWM Output A for Timer/Counter1 or Pin
Change Interrupt13).
PB4
OC0A/PCINT12 (Output Compare and PWM Output A for Timer/Counter0 or Pin
Change Interrupt12).
PB3
MISO/PCINT11 (SPI Bus Master Input/Slave Output or Pin Change Interrupt11).
PB2
MOSI/PCINT10 (SPI Bus Master Output/Slave Input or Pin Change Interrupt10).
PB1
SCK/PCINT9 (SPI Bus Serial Clock or Pin Change Interrupt9).
PB0
SS/PCINT8 (SPI Slave Select input or Pin Change Interrupt8).



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