mc68hc05pl4b Freescale Semiconductor, Inc, mc68hc05pl4b Datasheet - Page 25

• Manufacturer Part Number: mc68hc05pl4b
• Description: Low-cost Single-chip Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

4.1
MC68HC05PL4
REV 2.0
NOTES:
1. COPON enables/disables the COP watchdog timer.
External IRQ
16-Bit Timer
8-Bit Timer
Function
Keyboard
Reserved
Reserved
The CPU can be interrupted by ve different sources – one software and four
hardware:
INTERRUPT VECTORS
Table 4-1 summarizes the reset and interrupt sources and vector assignments
Reset
SWI
•
•
•
•
•
Non-maskable Software Interrupt Instruction (SWI)
External Asynchronous Interrupt (IRQ)
16-Bit Timer
8-Bit Timer
Keyboard Interrupt
Table 4-1. Vector Address for Interrupts and Reset
Power-On Logic
COP Watchdog
Freescale Semiconductor, Inc.
RESET Pin
User Code
Source
IRQ Pin
OCF Bit
T8IF Bit
KIF3 Bit
KIF2 Bit
KIF1 Bit
KIF0 Bit
TCF Bit
ICF Bit
For More Information On This Product,
—
—
Go to: www.freescale.com
INTERRUPTS
SECTION 4
INTERRUPTS
April 30, 1998
COPON
IRQEN
Local
Mask
None
OCIE
None
None
TCIE
KIE3
KIE2
KIE1
KIE0
T8IE
ICIE
—
—
1
Global
Mask
None
None
I Bit
I Bit
I Bit
I Bit
—
—
GENERAL RELEASE SPECIFICATION
(1=Highest)
Same Priority
As Instruction
Priority
—
—
1
2
3
4
5
$1FFC-$1FFD
$1FFE-$1FFF
$1FFA-$1FFB
$1FF8-$1FF9
$1FF6-$1FF7
$1FF4-$1FF5
$1FF2-$1FF3
$1FF0-$1FF1
Address
Vector
4-1