mc68hc05p9a Freescale Semiconductor, Inc, mc68hc05p9a Datasheet - Page 69

• Manufacturer Part Number: mc68hc05p9a
• Description: Hcmos Microcontroller Unit
• Manufacturer: Freescale Semiconductor, Inc

9-mc68hc05p9a
MOTOROLA
RESET
EXTERNAL INTERRUPT VECTOR FETCH
FROM OTHER
PORT A PINS
IRQ
SOFTWARE CONTROLLED OPTION
WRITE $0004
WRITE $0000
READ $0004
READ $0000
RESET
PORT A EXTERNAL INTERRUPT
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MASK OPTION
DATA DIRECTION
Figure 31. Port A I/O Logic
PORT A DATA
REGISTER A
REGISTER
BIT DDRA7
BIT PA7
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Parallel I/O Ports
EDGE AND LEVEL
V
DD
D
C
R
ENABLED
DISABLED
Q
Q
V
DD
EDGE ONLY
(FROM CCR)
I BIT
V
DD
PAX
Parallel I/O Ports
INTERRUPT
EXTERNAL
REQUEST
Port A
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