ATmega324PA Atmel Corporation, ATmega324PA Datasheet - Page 84

• Manufacturer Part Number: ATmega324PA
• Manufacturer: Atmel Corporation

Specifications of ATmega324PA

• Flash (kbytes): 32 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 32
• Ext Interrupts: 32
• Usb Speed: No
• Usb Interface: No
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 2
• Eeprom (bytes): 1024
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 6
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

8272C–AVR–06/11
CLKO, Divided System Clock: The divided system clock can be output on the PB1 pin. The
divided system clock will be output if the CKOUT Fuse is programmed, regardless of the
PORTB1 and DDB1 settings. It will also be output during reset.
PCINT9, Pin Change Interrupt source 9: The PB1 pin can serve as an external interrupt source.
• 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 14-7
shown in
MISO signal, while MOSI is divided into SPI MSTR OUTPUT and SPI SLAVE INPUT.
Table 14-7.
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
Figure 14-5 on page
PB7/SCK/
PCINT15
SPE • MSTR
PORTB7 • PUD
SPE • MSTR
0
SPE • MSTR
SCK OUTPUT
PCINT15 • PCIE1
1
SCK INPUT
PCINT17 INPUT
–
and
ATmega164A/PA/324A/PA/644A/PA/1284/P
Overriding Signals for Alternate Functions in PB7:PB4
Table 14-8
relate the alternate functions of Port B to the overriding signals
78. SPI MSTR INPUT and SPI SLAVE OUTPUT constitute the
PB6/MISO/
PCINT14
SPE • MSTR
PORTB14 • PUD
SPE • MSTR
0
SPE • MSTR
SPI SLAVE
OUTPUT
PCINT14 • PCIE1
1
SPI MSTR INPUT
PCINT14 INPUT
–
PB5/MOSI/
PCINT13
SPE • MSTR
PORTB13 • PUD
SPE • MSTR
0
SPE • MSTR
SPI MSTR OUTPUT
PCINT13 • PCIE1
1
SPI SLAVE INPUT
PCINT13 INPUT
–
PCINT12 • PCIE1
PB4/SS/OC0B/
PCINT12
SPE • MSTR
PORTB12 • PUD
SPE • MSTR
0
OC0A ENABLE
OC0A
1
SPI SS
PCINT12 INPUT
–
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