s908ab32ag0cfue Freescale Semiconductor, Inc, s908ab32ag0cfue Datasheet - Page 341

• Manufacturer Part Number: s908ab32ag0cfue
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

MC68HC908AB32
Freescale Semiconductor
Addr.
$001A
IRQ Status and Control
IRQ
Register Name
DECODER
NOTE:
VECTOR
RESET
FETCH
ACK
V
DD
I
PULLUP
DEVICE
—
NTERNAL
Rev. 1.1
Register
(ISCR)
The interrupt mask (I) in the condition code register (CCR) masks all
interrupt requests, including external interrupt requests.
Exception
Reset:
Read:
Write:
Figure 18-2. IRQ I/O Register Summary
V
MODE
DD
D
CK
Bit 7
CLR
IRQ
0
0
FF
Control.)
Q
External Interrupt (IRQ)
Figure 18-1. IRQ Module Block Diagram
= Unimplemented
6
0
0
5
0
0
IMASK
SYNCHRO-
VOLTAGE
DETECT
NIZER
4
0
0
HIGH
IRQF
3
0
ACK
IRQF
2
0
0
External Interrupt (IRQ)
(See 8.6
IMASK
1
0
Technical Data
TO CPU FOR
BIL/BIH
INSTRUCTIONS
IRQ
INTERRUPT
REQUEST
TO MODE
SELECT
LOGIC
MODE
Bit 0
0
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