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68HC705PD6 Datasheet(PDF) 39 Page - Motorola, Inc

Part # 68HC705PD6
Description  SPECIFICATION (General Release)
PDF  165 Pages
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Manufacturer  MOTOROLA [Motorola, Inc]
Direct Link  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

68HC705PD6 Datasheet(HTML) 39 Page - Motorola, Inc

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July 7, 1997
GENERAL RELEASE SPECIFICATION
MC68HC05PD6
INTERRUPTS
MOTOROLA
REV 1.1
4-5
can be set by either the pins or the data latches of PC7(6), be sure to clear the flags by
software before setting the IRQ1(2)E bit.
The IRQ1 and the IRQ2 pins are shared with the Port C bit 7 and bit 6, respectively, and
IRQ
x pin states can be determined by reading Port C pins. The BIL and BIH instructions
apply only to the IRQ1 input.
Figure 4-2. External Interrupt
D
C
Q
H
R
S
E
L
IRQ1S
Q
R
S
IRQ1F
READ INTSR
FOR BIH/BIL
D
C
Q
H
R
S
E
L
IRQ2S
Q
R
S
IRQ2F
READ INTSR
DATA
BUS
DATA
BUS
RESET/POR
IRQ1E
IRQ2E
Write 1 to RIRQ2
IRQ2
(PC6)
IRQ1
(PC7)
RESET/POR
Write 1 to RIRQ1
INT
0
1
1
0



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