MC68HC705C Motorola, MC68HC705C Datasheet - Page 52

• Manufacturer Part Number: MC68HC705C
• Description: HCMOS Microcontroller Unit
• Manufacturer: Motorola

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