ATMEGA328-AUR Atmel, ATMEGA328-AUR Datasheet - Page 75
ATMEGA328-AUR
Manufacturer Part Number
ATMEGA328-AUR
Description
IC MCU AVR 32K FLASH 32TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA328-AUR
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-TQFP, 32-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Part Number
Manufacturer
Quantity
Price
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12.2.6
12.2.7
12.2.8
8271C–AVR–08/10
PCMSK2 – Pin Change Mask Register 2
PCMSK1 – Pin Change Mask Register 1
PCMSK0 – Pin Change Mask Register 0
• Bit 0 – PCIF0: Pin Change Interrupt Flag 0
When a logic change on any PCINT[7:0] pin triggers an interrupt request, PCIF0 becomes set
(one). If the I-bit in SREG and the PCIE0 bit in PCICR are set (one), the MCU will jump to the
corresponding Interrupt Vector. The flag is cleared when the interrupt routine is executed. Alter-
natively, the flag can be cleared by writing a logical one to it.
• Bit 7:0 – PCINT[23:16]: Pin Change Enable Mask 23...16
Each PCINT[23:16]-bit selects whether pin change interrupt is enabled on the corresponding I/O
pin. If PCINT[23:16] is set and the PCIE2 bit in PCICR is set, pin change interrupt is enabled on
the corresponding I/O pin. If PCINT[23:16] is cleared, pin change interrupt on the corresponding
I/O pin is disabled.
• Bit 7 – Reserved
This bit is an unused bit in the ATmega48A/48PA/88A/88PA/168A/168PA/328/328P, and will
always read as zero.
• Bit 6:0 – PCINT[14:8]: Pin Change Enable Mask 14...8
Each PCINT[14:8]-bit selects whether pin change interrupt is enabled on the corresponding I/O
pin. If PCINT[14:8] is set and the PCIE1 bit in PCICR is set, pin change interrupt is enabled on
the corresponding I/O pin. If PCINT[14:8] is cleared, pin change interrupt on the corresponding
I/O pin is disabled.
• Bit 7:0 – PCINT[7:0]: Pin Change Enable Mask 7...0
Each PCINT[7:0] bit selects whether pin change interrupt is enabled on the corresponding I/O
pin. If PCINT[7:0] is set and the PCIE0 bit in PCICR is set, pin change interrupt is enabled on the
corresponding I/O pin. If PCINT[7:0] is cleared, pin change interrupt on the corresponding I/O
pin is disabled.
ATmega48A/48PA/88A/88PA/168A/168PA/328/328
Bit
(0x6D)
Read/Write
Initial Value
Bit
(0x6C)
Read/Write
Initial Value
Bit
(0x6B)
Read/Write
Initial Value
PCINT23
R/W
7
PCINT7
R/W
0
7
0
R
7
–
0
PCINT22
6
PCINT6
R/W
0
R/W
PCINT14
6
0
R/W
6
0
PCINT21
5
PCINT5
R/W
0
R/W
PCINT13
5
0
R/W
5
0
PCINT20
4
PCINT4
R/W
0
R/W
PCINT12
4
0
R/W
4
0
PCINT19
3
PCINT3
R/W
0
PCINT11
R/W
3
0
R/W
3
0
PCINT18
2
PCINT2
R/W
0
PCINT10
R/W
2
0
R/W
2
0
PCINT17
1
PCINT1
R/W
0
PCINT9
R/W
R/W
1
0
1
0
0
PCINT0
R/W
0
PCINT16
PCINT8
R/W
R/W
0
0
0
0
PCMSK0
PCMSK2
PCMSK1
75
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