参数资料
型号: MC68HC05SB7
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封装: MO-150, SSOP-28
文件页数: 96/170页
文件大小: 2161K
代理商: MC68HC05SB7
August 27, 1998
GENERAL RELEASE SPECIFICATION
MC68HC05SB7
INTERRUPTS
MOTOROLA
REV 2.1
4-1
SECTION 4
INTERRUPTS
An interrupt temporarily stops normal program execution to process a particular
event. An interrupt does not stop the execution of the instruction in progress, but
takes effect when the current instruction completes its execution. Interrupt pro-
cessing automatically saves the CPU registers on the stack and loads the pro-
gram counter with a user-dened vector address.
4.1
INTERRUPT VECTORS
1.
COPON enables the COP watchdog timer
Table 4-1 summarizes the reset and interrupt sources and vector assignments.
Table 4-1. Reset/Interrupt Vector Addresses
Function
Source
Control
Bit
Global
Hardware
Mask
Local
Software
Mask
Priority
(1 = Highest)
Vector
Address
Reset
Power-On Logic
RESET Pin
Low Voltage Reset
Illegal Address Reset
1
$1FFE–$1FFF
COP Watchdog
COPON1
Software
Interrupt (SWI)
User Code
Same Priority
As Instruction
$1FFC–$1FFD
External
Interrupt (IRQ)
IRQ/VPP Pin
I Bit
IRQE Bit
2
$1FFA–$1FFB
Core Timer
Interrupts
TOF Bit
RTIF Bit
I Bit
TOFE Bit
RTIE Bit
3
$1FF8–$1FF9
Programmable
Timer
Interrupts
ICF Bit
OCF Bit
TOF Bit
I Bit
ICIE Bit
OCIE Bit
TOIE Bit
4
$1FF6–$1FF7
SM-Bus
Interrupt
SMIF Bit
I Bit
SMIE Bit
5
$1FF4–$1FF5
Analog
Interrupt
CPF1 Bit
CPF2 Bit
I Bit
CPIE Bit
6
$1FF2–$1FF3
Current Detect
Interrupt
CIF Bit
I Bit
CIE Bit
7
$1FF0–$1FF1
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