參數(shù)資料
型號(hào)： MC68HC05P9AMDW
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, PDSO28
封裝： SOIC-28
文件頁數(shù)： 139/158頁
文件大?。?/td> 3885K
代理商： MC68HC05P9AMDW
COP
Interrupts
COP
Clearing the COP
Watchdog
To clear the COP watchdog and prevent a COP reset, write a logic 0 to
bit 0 (COPC) of the COP register at location $1FF0.
If the main program executes within the COP timeout period, the clearing
routine needs to be executed only once. If the main program takes
longer than the COP timeout period, the clearing routine must be
executed more than once.
NOTE:
Place the clearing routine in the main program and not in an interrupt
routine. Clearing the COP watchdog in an interrupt routine might prevent
COP watchdog timeouts even though the main program is not operating
properly.
Interrupts
The COP watchdog does not generate interrupts.
COP Register
The COP register is a write-only register that returns the contents of
EPROM location $1FF0 when read.
COPC — COP Clear
COPC is a write-only bit. Periodically writing a logic 0 to COPC
prevents the COP watchdog from resetting the MCU. Reset clears the
COPC bit.
$1FF0
Bit 7
654321
Bit 0
Read:
D7
D6
D5
D4
D3
D2
D1
D0
Write:
COPC
Reset:
UUUUUUU
0
= Unimplemented
U = Unaffected
Figure 41. COP Register (COPR)
7-cop0cop
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
..
.
相關(guān)PDF資料
PDF描述
MC68HC05P9ACP 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP28
MC68HC05P9DWR2 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC05RC18P 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP28
MC68HC05RC18FN 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC44
MC68HC05SR3FB 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQFP44
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC05P9AMP 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
MC68HC05P9AP 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
MC68HC05P9AVDW 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
MC68HC05P9AVP 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
MC68HC05P9DW 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*