atmega3250v-8auatmega325v-8ai ATMEL Corporation, atmega3250v-8auatmega325v-8ai Datasheet - Page 58

• Manufacturer Part Number: atmega3250v-8auatmega325v-8ai
• Description: Atmega3250 8-bit Microcontroller With In-system Programmable Flash
• Manufacturer: ATMEL Corporation

13.2.6
13.2.7
58
ATmega325/3250/645/6450
PCMSK1 – Pin Change Mask Register 1
PCMSK0 – Pin Change Mask Register 0
• Bit 7:0 – PCINT23:16: Pin Change Enable Mask 23..16
Each PCINT23:16 bit selects whether pin change interrupt is enabled on the corresponding I/O
pin. If PCINT23:16 is set and the PCIE2 bit in EIMSK is set, pin change interrupt is enabled on
the corresponding I/O pin. If PCINT23:16 is cleared, pin change interrupt on the corresponding
I/O pin is disabled.
Note:
• Bit 7:0 – PCINT15:8: Pin Change Enable Mask 15..8
Each PCINT15:8-bit selects whether pin change interrupt is enabled on the corresponding I/O
pin. If PCINT15:8 is set and the PCIE1 bit in EIMSK is set, pin change interrupt is enabled on the
corresponding I/O pin. If PCINT15:8 is cleared, pin change interrupt on the corresponding I/O
pin is disabled.
• Bit 7:0 – PCINT7:0: Pin Change Enable Mask 7..0
Each PCINT7:0 bit selects whether pin change interrupt is enabled on the corresponding I/O pin.
If PCINT7:0 is set and the PCIE0 bit in EIMSK is set, pin change interrupt is enabled on the cor-
responding I/O pin. If PCINT7:0 is cleared, pin change interrupt on the corresponding I/O pin is
disabled.
Bit
(0x6C)
Read/Write
Initial Value
Bit
(0x6B)
Read/Write
Initial Value
1. PCMSK3 and PCMSK2 are only present in ATmega3250/6450.
R/W
PCINT15
7
PCINT7
0
R/W
7
0
6
PCINT6
R/W
0
PCINT14
R/W
6
0
5
PCINT5
R/W
0
PCINT13
R/W
5
0
4
PCINT4
R/W
0
PCINT12
R/W
4
0
PCINT11
3
PCINT3
R/W
0
R/W
3
0
PCINT10
2
PCINT2
R/W
0
R/W
2
0
1
PCINT1
R/W
0
PCINT9
R/W
1
0
0
PCINT0
R/W
0
PCINT8
R/W
0
0
PCMSK0
PCMSK1
2570L–AVR–08/07