MC68HC705C8A Datasheet, PDF (52/222 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Interrupts
READ $0005
WRITE $0005
RESET
WRITE $0001
PBPU7
FROM MOR1
DATA DIRECTION
REGISTER B
BIT DDRB7
PORT B DATA
REGISTER
BIT PB7
READ $0001
IRQ
FROM OPTION
REGISTER
V_DD
PB7
FROM OTHER
PORT B PINS
IRQ
V_DD
DQ
CRQ
I BIT
FROM CCR
RESET
EXTERNAL INTERRUPT VECTOR FETCH
Figure 4-3. Port B I/O Logic
EXTERNAL
INTERRUPT
REQUEST
Technical Data
52
Interrupts
MC68HC705C8A — Rev. 2.0
MOTOROLA