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M68ICS08GR Datasheet(PDF) 169 Page - Freescale Semiconductor, Inc

No. de pieza M68ICS08GR
Descripción Electrónicos  M68HC08 Microcontrollers
PDF  408 Pages
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Fabricante Electrónico  FREESCALE [Freescale Semiconductor, Inc]
Página de inicio  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

M68ICS08GR Datasheet(HTML) 169 Page - Freescale Semiconductor, Inc

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External Interrupt (IRQ)
Functional Description
MC68HC908GR8 — Rev 4.0
Technical Data
MOTOROLA
External Interrupt (IRQ)
169
NOTE:
The interrupt mask (I) in the condition code register (CCR) masks all
interrupt requests, including external interrupt requests.
Figure 12-1. IRQ Module Block Diagram
IRQ1
ACK
IMASK
DQ
CK
CLR
IRQ
HIGH
INTERRUPT
TO MODE
SELECT
LOGIC
IRQ
FF
REQUEST
VDD
MODE
VOLTAGE
DETECT
SYNCHRO-
NIZER
IRQF
TO CPU FOR
BIL/BIH
INSTRUCTIONS
VECTOR
FETCH
DECODER
RESET
VDD
INTERNAL
PULLUP
DEVICE
Addr.
Register Name
Bit 7
654321
Bit 0
$001D
IRQ Status and Control
Register (INTSCR)
Read:
0000
IRQF
0
IMASK
MODE
Write:
ACK
Reset:
00000000
= Unimplemented
Figure 12-2. IRQ I/O Register Summary
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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