Rainbow-electronics ATmega128RFA1 Uživatelský manuál stáhnout pdf (Strana 224)

224

8266A-MCU Wireless-12/09

ATmega128RFA1

• Bit 1 – PCIF1 - Pin Change Interrupt Flag 1

When a logic change on any PCINT15:8 pin triggers an interrupt request, PCIF1

becomes set (one). If the I-bit in SREG and the PCIE1 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. Note that the I/O ports corresponding to PCINT15:9 are not implemented.

• Bit 0 – PCIF0 - Pin Change Interrupt Flag 0

When a logic change on any PCINT7:0 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.

16.2.7 PCMSK2 – Pin Change Mask Register 2

Bit 7 6 5 4

NA ($6D) PCINT23 PCINT22 PCINT21 PCINT20 PCMSK2

Read/Write RW RW RW RW

Initial Value 0 0 0 0

Bit 3 2 1 0

NA ($6D) PCINT19 PCINT18 PCINT17 PCINT16 PCMSK2

Read/Write RW RW RW RW

Initial Value 0 0 0 0

Note that the PCMSK2 register has no function in this device. The I/O ports associated

to PCINT23:16 are not implemented. Normally each bit PCINT23:16 selects whether

the pin change interrupt is enabled on the corresponding I/O pin. If PCINT23:16 is set

and the PCIE2 bit in PCICR is set, the pin change interrupt is enabled on the

corresponding I/O pin. If PCINT23:16 is cleared, the pin change interrupt on the

corresponding I/O pin is disabled.

• Bit 7:0 – PCINT23:16 - Pin Change Enable Mask

16.2.8 PCMSK1 – Pin Change Mask Register 1

Bit 7 6 5 4

NA ($6C) PCINT15 PCINT14 PCINT13 PCINT12 PCMSK1

Read/Write RW RW RW RW

Initial Value 0 0 0 0

Bit 3 2 1 0

NA ($6C) PCINT11 PCINT10 PCINT9 PCINT8 PCMSK1

Read/Write RW RW RW RW

Initial Value 0 0 0 0

Bit PCINT8 selects whether the pin change interrupt is enabled on the corresponding

I/O pin. If PCINT8 is set and the PCIE1 bit in PCICR is set, the pin change interrupt is

enabled on the corresponding I/O pin. If PCINT8 is cleared, the pin change interrupt on

the corresponding I/O pin is disabled.

1 2 ... 219 220 221 222 223 224 225 226 227 228 229 ... 523 524

Komentáře k této Příručce

Žádné komentáře

Rainbow-electronics ATmega128RFA1 Uživatelský manuál Strana 224

Komentáře k této Příručce

Související produkty a manuály pro Senzory Rainbow-electronics ATmega128RFA1