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ATmega324P Datasheet(PDF) 83 Page - ATMEL Corporation

Part # ATmega324P
Description  8-bit Microcontroller with 16/32/64K Bytes In-System Programmable Flash
PDF  377 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega324P Datasheet(HTML) 83 Page - ATMEL Corporation

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83
7674F–AVR–09/09
ATmega164P/324P/644P
• T0/XCK0/PCINT8, Bit 0
T0, Timer/Counter0 counter source.
XCK0, USART0 External clock. The Data Direction Register (DDB0) controls whether the clock
is output (DDD0 set “one”) or input (DDD0 cleared). The XCK0 pin is active only when the
USART0 operates in Synchronous mode.
PCINT8, Pin Change Interrupt source 8: The PB0 pin can serve as an external interrupt source.
Table 12-7 and Table 12-8 relate the alternate functions of Port B to the overriding signals
shown in Figure 12-5 on page 77. SPI MSTR INPUT and SPI SLAVE OUTPUT constitute the
MISO signal, while MOSI is divided into SPI MSTR OUTPUT and SPI SLAVE INPUT. .
Table 12-7.
Overriding Signals for Alternate Functions in PB7:PB4
Signal
Name
PB7/SCK/
PCINT15
PB6/MISO/
PCINT14
PB5/MOSI/
PCINT13
PB4/SS/OC0B/
PCINT12
PUOE
SPE • MSTR
SPE • MSTR
SPE • MSTR
SPE • MSTR
PUOV
PORTB7 • PUD
PORTB14 • PUD
PORTB13 • PUD
PORTB12 • PUD
DDOE
SPE • MSTR
SPE • MSTR
SPE • MSTR
SPE • MSTR
DDOV
0
0
0
0
PVOE
SPE • MSTR
SPE • MSTR
SPE • MSTR
OC0A ENABLE
PVOV
SCK OUTPUT
SPI SLAVE
OUTPUT
SPI MSTR OUTPUT
OC0A
DIEOE
PCINT15 • PCIE1
PCINT14 • PCIE1
PCINT13 • PCIE1
PCINT4 • PCIE1
DIEOV
111
1
DI
SCK INPUT
PCINT17 INPUT
SPI MSTR INPUT
PCINT14 INPUT
SPI SLAVE INPUT
PCINT13 INPUT
SPI SS
PCINT12 INPUT
AIO
–––
–
Table 12-8.
Overriding Signals for Alternate Functions in PB3:PB0
Signal
Name
PB3/AIN1/OC0B/
PCINT11
PB2/AIN0/INT2/
PCINT10
PB1/T1/CLKO/PCIN
T9
PB0/T0/XCK/
PCINT8
PUOE
00
00
PUOV
00
00
DDOE
0
0
0
0
DDOV
0
0
0
0
PVOE
OC0B ENABLE
0
0
0
PVOV
OC0B
0
0
0
DIEOE
PCINT11 • PCIE1
INT2 ENABLE
PCINT10 • PCIE1
PCINT9 • PCIE1
PCINT8 • PCIE1
DIEOV
1
1
1
1
DI
PCINT11 INPUT
INT2 INPUT
PCINT10 INPUT
T1 INPUT
PCINT9 INPUT
T0 INPUT
PCINT8 INPUT
AIO
–
–
–
–



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