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參數(shù)資料
| 型號： | MC68HC05E6MFB |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44 |
| 封裝： | PLASTIC, QFP-44 |
| 文件頁數(shù)： | 114/140頁 |
| 文件大?。?/td> | 1584K |
| 代理商： | MC68HC05E6MFB |
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Resets and Interrupts
Interrupts
MC68HC05E6 — Rev. 1.0
Resets and Interrupts
If the COP watchdog timer is allowed to timeout, an internal reset is
generated to reset the MCU. Because the internal reset signal is used,
the MCU comes out of a COP reset in the same operating mode it was
in when the COP timeout was generated.
The COP reset function is enabled or disabled by a mask option on the
MC68HC05E6 or by the COP bit in the LVIOPT register on the
MC68HC705E6 (see Mask options).
Illegal address
reset
When an opcode fetch occurs from an address which is not part of the
RAM ($0080–$00FF), ROM/
EPROM ($0800–$1FFF)/($0700–$1FFF)
or EEPROM ($0100–$019F), the device is automatically reset.
NOTE:
No RTS or RTI instruction should be placed at the end of a memory
block, i.e. at address $017F, since this would result in an illegal address
reset.
Interrupts
The MCU can be interrupted by six different sources (five maskable
hardware interrupts and one nonmaskable software interrupt):
External signal on the IRQ pin
Core timer interrupt
Low voltage indication interrupt (LVI)
16-bit programmable timer interrupt
Keyboard interrupt
Software interrupt instruction (SWI)
Interrupts cause the processor to save the register contents on the stack
and to set the interrupt mask (I-bit) to prevent additional interrupts. The
RTI instruction (ReTurn from Interrupt) causes the register contents to
be recovered from the stack and normal processing to resume. While
executing the RTI instruction, the interrupt mask bit (I-bit) will be cleared
3-resets
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For More Information On This Product,
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| MC68HC05E6VDWR2 | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28 |
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| MC68HC705E6CFB | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQFP44 |
| MC68HC705E6VDWR2 | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28 |
| MC68HC05E6VFB | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC05E6VDW | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05E6VFB | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05F32 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:a member of the M68HC05 family of HCMOS |
| MC68HC05F32CFU | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:a member of the M68HC05 family of HCMOS |
| MC68HC05F32CPU | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:a member of the M68HC05 family of HCMOS |
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