參數(shù)資料
型號: MC68HC05P4ACDW
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封裝: PLASTIC, SOIC-28
文件頁數(shù): 44/102頁
文件大?。?/td> 1085K
代理商: MC68HC05P4ACDW
Resets
Technical Data
MC68HC05P4A — Rev. 7.0
46
Resets
MOTOROLA
5.5 Computer Operating Properly (COP) Reset
The MCU contains a watchdog timer that automatically times out if not
reset (cleared) within a specific time by a program reset sequence. If the
COP watchdog timer is allowed to time out, 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.
information on the COP.
Figure 5-1. Power-On Reset and RESET
OSC1
2
RESET
Internal
Clock
1
Internal
Address
Bus
1
1FFE
1FFF
New
Op
PCH
PCL
V
DD
V
DD
Threshold (1-2 V Typical)
t
VDDR
t
OXOV
4064 t
cyc
t
cyc
t
RL
Internal
Data
Bus
1
1FFE
New
1FFF
PCH
PCL
Op
Code
PCL
PCH
NOTES:
1. Internal timing signal and bus information are not available externally.
2. OSC1 line is not meant to represent frequency. It is only used to represent time.
3. The next rising edge of the internal processor clock following the rising edge of RESET initiates the reset sequence.
3
PC
相關(guān)PDF資料
PDF描述
MC68HC05P4ADWR3 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC05P4ADWR2 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC05P4CDWR3 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC05P4CDWR2 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC05P4P 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP28
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC05P4DW 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT
MC68HC05P4P 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT
MC68HC05P6 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT
MC68HC05P6_1 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT
MC68HC05P8 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT