Datasheet

57
ATmega325/3250/645/6450
2570K–AVR–04/07
PCMSK2 – Pin Change Mask
Register 2
(1)
• Bit 7:0 – PCINT23:16: Pin Change Enable Mask 23..16
Each PCINT23:16 bit selects whether pin change interrupt is enabled on the corre-
sponding 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: 1. PCMSK3 and PCMSK2 are only present in ATmega3250/6450.
PCMSK1 – Pin Change Mask
Register 1
• Bit 7:0 – PCINT15:8: Pin Change Enable Mask 15..8
Each PCINT15:8-bit selects whether pin change interrupt is enabled on the correspond-
ing 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.
PCMSK0 – Pin Change Mask
Register 0
• Bit 7:0 – PCINT7:0: Pin Change Enable Mask 7..0
Each PCINT7:0 bit selects whether pin change interrupt is enabled on the correspond-
ing I/O pin. If PCINT7:0 is set and the PCIE0 bit in EIMSK is set, pin change interrupt is
enabled on the corresponding I/O pin. If PCINT7:0 is cleared, pin change interrupt on
the corresponding I/O pin is disabled.
Bit 76543210
(0x6D) PCINT23 PCINT22 PCINT21 PCINT20 PCINT19 PCINT18 PCINT17 PCINT16 PCMSK2
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Initial
Value
00000000
Bit 76543210
(0x6C)
PCINT15 PCINT14 PCINT13 PCINT12 PCINT11 PCINT10 PCINT9 PCINT8 PCMSK1
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Initial Value 0 0 0 0 0 0 0 0
Bit 76543210
(0x6B) PCINT7 PCINT6 PCINT5 PCINT4 PCINT3 PCINT2 PCINT1 PCINT0 PCMSK0
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Initial Value 0 0 0 0 0 0 0 0