参数资料
型号: MC68HC908JL8MFAE
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, PQFP32
封装: PLASTIC, LQFP-32
文件页数: 7/56页
文件大小: 648K
代理商: MC68HC908JL8MFAE
MC68HC908JL8SM/D
SIM Reset Status Register
MC68HC908JL8MC68HC908JK8
SIM Reset Status Register
This register contains seven flags that show the source of the last reset. Clear
the SIM reset status register by reading it. A power-on reset sets the POR bit
and clears all other bits in the register.
POR — Power-On Reset Bit
1 = Last reset caused by POR circuit
PIN — External Reset Bit
1 = Last reset caused by external reset pin (RST)
COP — Computer Operating Properly Reset Bit
1 = Last reset caused by COP timeout
ILOP — Illegal Opcode Reset Bit
1 = Last reset caused by an illegal opcode
ILAD — Illegal Address Reset Bit (opcode fetches only)
1 = Last reset caused by an opcode fetch from an illegal address
MODRST — Monitor Mode Entry Module Reset Bit
1 = Last reset caused by monitor mode entry when vector locations
$FFFE and $FFFF are $FF after POR while IRQ = VDD
LVI — Low Voltage Inhibit Reset Bit
1 = Last reset caused by LVI circuit
Interrupt Status Registers (INT1, INT2, INT3)
These three registers include status flags which indicate which interrupt
sources currently have pending requests. See Table 3.
$FE01
Bit 7
654321
Bit 0
POR
PIN
COP
ILOP
ILAD
MODRST
LVI
0
POR:
10000000
Figure 11. SIM Reset Status Register (SRSR)
$FE04
Bit 7
654321
Bit 0
IF6
IF5
IF4
IF30IF10
0
Reset:
00000000
Source: T2TCH0
T1TOF
T1TCH1
T1TCH0
IRQ
Figure 12. Interrupt Status Register 1 (INT1)
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For More Information On This Product,
Go to: www.freescale.com
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