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| MC68HC05C9E Datasheet, PDF (39/106 Pages) Freescale Semiconductor, Inc – Microcontrollers | |||
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PORT B EXTERNAL INTERRUPT
MASK OPTION
READ $0005
WRITE $0005
RESET
DATA DIRECTION
REGISTER B
BIT DDRB7
WRITE $0001
PORT B DATA
REGISTER
BIT PB7
READ $0001
VDD
VDD
DISABLED
ENABLED
PBX
Port D
SOFTWARE CONTROLLED OPTION
EDGE AND LEVEL
EDGE ONLY
FROM OTHER
PORT B PINS
IRQ
VDD
DQ
CQ
R
I BIT
FROM CCR
RESET
EXTERNAL INTERRUPT VECTOR FETCH
Figure 7-2. Port B I/O Logic
EXTERNAL
INTERRUPT
REQUEST
MC68HC05C9E Advance Information Data Sheet, Rev. 0.1
Freescale Semiconductor
39
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