MC68HC908AP16CFA MOTOROLA [Motorola, Inc], MC68HC908AP16CFA Datasheet - Page 385
MC68HC908AP16CFA
Manufacturer Part Number
MC68HC908AP16CFA
Description
Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC908AP16CFA.pdf
(440 pages)
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19.6.2 IRQ2 Status and Control Register
MC68HC908AP Family — Rev. 2.5
MOTOROLA
Address:
The IRQ2 status and control register (INTSCR2) controls and monitors
operation of IRQ2. The INTSCR2 has the following functions:
PUC0ENB — IRQ2 Pin Pullup Enable Bit.
IRQ2F — IRQ2 Flag Bit
ACK2 — IRQ2 Interrupt Request Acknowledge Bit
Reset:
Read:
Write:
•
•
•
•
•
Setting this bit to logic 1 disables the pullup on PTC0/IRQ2 pin.
Reset clears this bit.
This read-only status bit is high when the IRQ2 interrupt is pending.
Writing a logic 1 to this write-only bit clears the IRQ2 latch. ACK2
always reads as logic 0. Reset clears ACK2.
Freescale Semiconductor, Inc.
Figure 19-5. IRQ2 Status and Control Register (INTSCR2)
For More Information On This Product,
1 = IRQ2 pin internal pullup is disabled
0 = IRQ2 pin internal pullup is enabled
1 = IRQ2 interrupt pending
0 = IRQ2 interrupt not pending
Shows the state of the IRQ2 flag
Masks IRQ2 interrupt request
Enables/disables the internal pullup device on IRQ2 pin
Clears the IRQ2 latch
Controls triggering sensitivity of the IRQ2 interrupt pin
$001C
Bit 7
0
0
Go to: www.freescale.com
PUC0ENB
= Unimplemented
6
0
5
0
0
4
0
0
IRQ2F
3
0
ACK2
2
0
0
External Interrupt (IRQ)
IMASK2
1
0
IRQ Registers
Data Sheet
MODE2
Bit 0
0
385
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