ATmega88PA Automotive Atmel Corporation, ATmega88PA Automotive Datasheet - Page 72

• Manufacturer Part Number: ATmega88PA Automotive
• Manufacturer: Atmel Corporation

13.2.6
13.2.7
13.2.8
72
Atmel ATmega48PA/88PA/168PA [Preliminary]
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.
Alternatively, 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 Atmel
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 corre-
sponding 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.
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
PCINT6
R/W
R/W
6
0
PCINT14
6
0
R/W
6
0
PCINT21
5
PCINT5
R/W
0
R/W
PCINT13
5
0
R/W
5
0
®
ATmega48PA/88PA/168PA, and will always read as
PCINT20
4
PCINT4
R/W
0
PCINT12
R/W
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
PCINT1
R/W
1
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
9223B–AVR–09/11
PCMSK0
PCMSK2
PCMSK1