- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄379931 > COP885BC (National Semiconductor Corporation) 8-Bit CMOS ROM Based Microcontrollers with 2k Memory, Comparators, and CAN Interface(8位基于CMOS ROM帶2K存儲器，比較器和CAN接口的微控制器) PDF資料下載
參數(shù)資料
| 型號： | COP885BC |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 8-Bit CMOS ROM Based Microcontrollers with 2k Memory, Comparators, and CAN Interface(8位基于CMOS ROM帶2K存儲器，比較器和CAN接口的微控制器) |
| 中文描述： | 8位的CMOS基于ROM與2K內(nèi)存，比較器和CAN接口（8位基于ROM的帶2K的CMOS存儲器，比較器和CAN微控制器接口的微控制器） |
| 文件頁數(shù)： | 33/57頁 |
| 文件大?。?/td> | 677K |
| 代理商： | COP885BC |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁當前第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁
Frame Formats
(Continued)
Within one system each message must be assigned a
unique identifier. This is to prevent bit errors, as one mod-
ule may transmit a “dominant” data bit while the other is
transmitting a “recessive” data bit. This could happen if
two or more modules start transmission of a frame at the
same time and all win arbitration.
Data frames with a given identifier and a non-zero data
length code may be initiated by one node only. Other-
wise, in worst case, two nodes would count up to the bus-
off state, due to bit errors, if they always start transmitting
the same ID with different data.
Every remote frame should have a system-wide data
length code (DLC). Otherwise two modules starting
transmission of a remote frame at the same time will
overwrite each other’s DLC which result in bit errors.
ACCEPTANCE FILTERING
Every node may perform acceptance filtering on the identi-
fier of a data or a remote frame to filter out the messages
which are not required by the node. In they way only the data
of frames which match the acceptance filter is stored in the
corresponding data buffers. However, every node which is
not in the bus-off state and has received a correct CRC-
sequence acknowledges each frame.
ERROR MANAGEMENT AND DETECTION
There are multiple mechanisms in the CAN protocol, to de-
tect errors and to inhibit erroneous modules from disabling
all bus activities.
DS012067-62
module 1 = error active transmitter detects bit error at t2
module 2 = error active receiver with a local fault at t1
module 3 = error active receiver detects stuff error at t2
FIGURE 27. Error Frame—Error Active Transmitter
C
www.national.com
33
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| COP884CF | 8-Bit CMOS ROM Based Microcontrollers with 4k Memory and A/D Converter |
| COP884CG | Dual Low-Voltage Rail-to-Rail Output Operational Amplifier 8-MSOP -40 to 125 |
| COP884CS | Dual Low-Voltage Rail-to-Rail Output Operational Amplifier 8-SOIC -40 to 125 |
| COP884EG | Dual Low-Voltage Rail-to-Rail Output Operational Amplifier 8-SOIC -40 to 125 |
| COP884EK | Dual Low-Voltage Rail-to-Rail Output Operational Amplifier 8-TSSOP -40 to 125 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| COP885BC-XXX/WM | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| COP888CF | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:8-Bit CMOS ROM Based Microcontrollers with 4k Memory and A/D Converter |
| COP888CFMHD-1 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| COP888CFMHD-3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| COP888CFMHEL-1 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。