参数资料
型号: MC68HC08QY4VDTE
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO16
封装: 0.65 MM PITCH, LEAD FREE, TSSOP-16
文件页数: 16/176页
文件大小: 1124K
代理商: MC68HC08QY4VDTE
System Integration Module (SIM)
MC68HC08QY/QT Family Data Sheet, Rev. 2
112
Freescale Semiconductor
13.6.1.2 SWI Instruction
The SWI instruction is a non-maskable instruction that causes an interrupt regardless of the state of the
interrupt mask (I bit) in the condition code register.
NOTE
A software interrupt pushes PC onto the stack. A software interrupt does
not push PC – 1, as a hardware interrupt does.
13.6.2 Interrupt Status Registers
The flags in the interrupt status registers identify maskable interrupt sources. Table 13-3 summarizes the
interrupt sources and the interrupt status register flags that they set. The interrupt status registers can be
useful for debugging.
Table 13-3. Interrupt Sources
Priority
Source
Flag
Mask(1)
1. The I bit in the condition code register is a global mask for all interrupt sources except the SWI instruction.
INT
Register
Flag
Vector
Address
Highest
Lowest
Reset
$FFFE–$FFFF
SWI instruction
$FFFC–$FFFD
IRQ pin
IRQF
IMASK
IF1
$FFFA–$FFFB
Timer channel 0 interrupt
CH0F
CH0IE
IF3
$FFF6–$FFF7
Timer channel 1 interrupt
CH1F
CH1IE
IF4
$FFF4–$FFF5
Timer overflow interrupt
TOF
TOIE
IF5
$FFF2–$FFF3
Reserved for test(2)
2. This vector location is reserved for test. Factory programmed with $00 at location $FFEC and $83 at location $FFED.
IF8
$FFEC–$FFED
Keyboard interrupt
KEYF
IMASKK
IF14
$FFE0–$FFE1
ADC conversion complete interrupt
COCO
AIEN
IF15
$FFDE–$FFDF
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