MC68HC908JL8 MOTOROLA [Motorola, Inc], MC68HC908JL8 Datasheet - Page 237

• Manufacturer Part Number: MC68HC908JL8
• Description: Motorola reserves the right to make changes without further notice to any products herein
• Manufacturer: MOTOROLA [Motorola, Inc]

14.4.1 IRQ Pin
MC68HC908JL8
MOTOROLA
Addr.
$001D
IRQPUD
IRQ Status and Control
IRQ
Register Name
NOTE:
DECODER
—
VECTOR
FETCH
RESET
ACK
V
Rev. 2.0
DD
INTERNAL
PULLUP
DEVICE
(INTSCR)
Register
The interrupt mask (I) in the condition code register (CCR) masks all
interrupt requests, including external interrupt requests. (See
Exception
A logic zero on the IRQ pin can latch an interrupt request into the IRQ
latch. A vector fetch, software clear, or reset clears the IRQ latch.
Reset:
Read:
Write:
Figure 14-1. IRQ Module Block Diagram
Freescale Semiconductor, Inc.
Figure 14-2. IRQ I/O Register Summary
For More Information On This Product,
V
MODE
DD
Bit 7
D
0
0
CK
Control.)
CLR
Go to: www.freescale.com
External Interrupt (IRQ)
Q
= Unimplemented
6
0
0
5
0
0
IMASK
SYNCHRONIZER
4
0
0
VOLTAGE
DETECT
HIGH
IRQF
3
0
ACK
2
0
0
IRQF
External Interrupt (IRQ)
Functional Description
IMASK
1
0
Technical Data
TO CPU FOR
BIL/BIH
INSTRUCTIONS
IRQ
INTERRUPT
REQUEST
TO MODE
SELECT
LOGIC
7.6
MODE
Bit 0
0
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