MC68HC908JG16FA MOTOROLA [Motorola, Inc], MC68HC908JG16FA Datasheet - Page 281
MC68HC908JG16FA
Manufacturer Part Number
MC68HC908JG16FA
Description
Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC908JG16FA.pdf
(324 pages)
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15.9 IRQ Option Control Register
MC68HC908JG16
MOTOROLA
—
Rev. 1.0
Address:
The IRQ option control register controls and monitors the external
interrupt function available on the PTE4 pin. It also disables/enables the
pullup resistor on the IRQ pin.
PTE4IF — PTE4 Interrupt Flag
PTE4IE — PTE4 Interrupt Enable
IRQPD — IRQ Pullup Disable
Reset:
Read:
Write:
•
•
•
This read-only status bit is high when a falling edge on PTE4 pin is
detected. PTE4IF bit clears when the IOCR is read.
This read/write bit enables or disables the interrupt function on the
PTE4 pin to trigger the IRQ interrupt. Setting the PTE4IE bit and
clearing the USBEN bit in the USB address register configure the
PTE4 pin for interrupt function to the IRQ interrupt. Setting PTE4IE
also enables the internal pullup on PTE4 pin.
This read/write bit controls the pullup option for the IRQ pin.
Freescale Semiconductor, Inc.
For More Information On This Product,
1 = Falling edge on PTE4 is detected and PTE4IE is set
0 = Falling edge on PTE4 is not detected or PTE4IE is clear
1 = PTE4 interrupt enabled; triggers IRQ interrupt
0 = PTE4 interrupt disabled
1 = Internal pullup is disconnected
0 = Internal pull-up is connected between IRQ pin and V
Controls pullup option on IRQ pin
Enables PTE4 pin for external interrupts to IRQ
Shows the state of the PTE4 interrupt flag
$001C
Bit 7
Figure 15-4. IRQ Option Control Register (IOCR)
0
0
Go to: www.freescale.com
External Interrupt (IRQ)
= Unimplemented
6
0
0
5
0
0
4
0
0
3
0
0
IRQ Option Control Register
PTE4IF
2
0
External Interrupt (IRQ)
PTE4IE
1
0
Technical Data
DD
IRQPD
Bit 0
0
281
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