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| MC68HC908LJ24 Datasheet, PDF (403/464 Pages) Motorola, Inc – Microcontrollers | |||
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Freescale Semiconductor, Inc.
External Interrupt (IRQ)
Functional Description
RESET
ACK
VECTOR
FETCH
DECODER
VDD
INTERNAL
PULLUP
DEVICE
IRQ
VDD
CLR
D
Q
CK
SYNCHRONIZER
IMASK
TO CPU FOR
BIL/BIH
INSTRUCTIONS
IRQF
IRQ
INTERRUPT
REQUEST
MODE
HIGH
VOLTAGE
DETECT
Figure 19-1. IRQ Module Block Diagram
TO MODE
SELECT
LOGIC
Addr.
$001E
Register Name
Bit 7
6
5
4
3
2
1
Bit 0
Read: 0
0
0
0
IRQF
0
IRQ Status and Control
IMASK MODE
Register Write:
ACK
(INTSCR)
Reset: 0
0
0
0
0
0
0
0
= Unimplemented
Figure 19-2. IRQ I/O Port Register Summary
MC68HC908LJ24/LK24 â Rev. 2
MOTOROLA
External Interrupt (IRQ)
For More Information On This Product,
Go to: www.freescale.com
Data Sheet
403
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