參數(shù)資料
型號(hào)： MC68HC05J3CDW
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, PDSO20
封裝： PLASTIC, SOIC-20
文件頁數(shù)： 47/92頁
文件大?。?/td> 912K
代理商： MC68HC05J3CDW
MC68HC05J3
MOTOROLA
7-1
RESETS AND INTERRUPTS
7
RESETS AND INTERRUPTS
7.1
Resets
The MC68HC05J3 can be reset in three ways: by the initial power-on reset function, by an active
low input to the RESET pin and by a COP watchdog reset, if the watchdog timer is enabled. Any
of these resets will cause the program to go to its starting address, specied by the contents of
memory locations $0FFE and $0FFF, and cause the interrupt mask of the condition code register
to be set.
Figure 7-1 Reset timing diagram
VDD
RESET
0FFF
0FFE
New
0FFF
0FFE
PC
OSC1
New
PC
Internal
processor clock
0FFE
Op
code
New
PCL
New
PCH
tVDDR
Op
code
New
PCL
New
PCH
address bus
Internal
data bus
tOXOV
tCYC
tPORL
0FFE
Program
execution
begins
Program
execution
begins
tRL(or tDOGL)
(Internal power-on reset)
(External hardware reset)
VDD threshold (1-2V typical)
Reset sequence
TPG
48
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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相關(guān)PDF資料
PDF描述
MC68HC05JB3DW 8-BIT, MROM, 3 MHz, MICROCONTROLLER, PDSO28
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MC68HC05JB3JP 8-BIT, MROM, 3 MHz, MICROCONTROLLER, PDIP20
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC05J3CP 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcomputer Unit
MC68HC05J3DW 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcomputer Unit
MC68HC05J3P 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcomputer Unit
MC68HC05J5A 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:8-bit microcontroller units
MC68HC05J5ADW 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:8-bit microcontroller units
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