欢迎访问ic37.com |
会员登录 免费注册
发布采购

P82C250 参数 Datasheet PDF下载

P82C250图片预览
型号: P82C250
PDF下载: 下载PDF文件 查看货源
内容描述: PCA82C250 / 251>CAN收发器 [PCA82C250 / 251 CAN Transceiver]
分类和应用: PC
文件页数/大小: 28 页 / 120 K
品牌: NXP [ NXP ]
 浏览型号P82C250的Datasheet PDF文件第5页浏览型号P82C250的Datasheet PDF文件第6页浏览型号P82C250的Datasheet PDF文件第7页浏览型号P82C250的Datasheet PDF文件第8页浏览型号P82C250的Datasheet PDF文件第10页浏览型号P82C250的Datasheet PDF文件第11页浏览型号P82C250的Datasheet PDF文件第12页浏览型号P82C250的Datasheet PDF文件第13页  
Philips Semiconductors  
PCA82C250 / 251 CAN Transceiver  
Application Note  
AN96116  
uC  
CAN - Contoller  
CTX1CTX0 CRX0 CRX1 Px,y  
/ TX1 / TX0 / RX0 / RX1  
e.g. PCx82C200  
either connection to an output port pin,  
if standby mode shall be possible  
or  
connection to ground  
0V  
R
ext  
TxD RxD  
VREF  
Rs  
+5V  
V
PCA 82C250/251  
CAN Transceiver  
CC  
100n  
0V  
GND  
CANH CANL  
JK512151.GWM  
ISO 11898 Standard  
CAN Bus Line  
CAN_H  
CAN_L  
124  
124  
Programming of the Output Control Register (example)  
Output Control TX0 push-pull, dominant = low e.g. 1A  
hex  
Fig. 3 Application example of the PCA82C250/251 transceivers  
2.1  
Application Examples  
A typical application of the PCA82C250/251 transceiver is shown in Fig. 3. A protocol controller is connected to  
the transceiver via a serial data output line (TX) and a serial data input line (RX). The transceiver is attached to  
the bus line via its two bus terminals CANH and CANL, which provide differential receive and transmit capability.  
The input Rs is used for mode control purpose. The reference voltage output V  
provides an output voltage of  
REF  
0.5 × V  
nominal. Both transceiver products are powered with a nominal supply voltage of +5 V.  
CC  
The protocol controller outputs a serial transmit data stream to the TxD input of the transceiver. An internal pull-  
up function sets the TxD input to logic HIGH i.e. the bus output driver is passive by default. In this so-called  
recessive state (see Fig. 2) the CANH and CANL inputs are biased to a voltage level of 2.5 V nominal via  
receiver input networks with an internal impedance of 17 ktypical. Otherwise if a logic LOW-level is applied to  
TxD, this activates the bus output stage, thus generating a so-called dominant signal level on the bus line (see  
Fig. 2). The output driver consists of a source and a sink output stage. CANH is attached to the source output  
and CANL to the sink output stage. The nominal voltage in the dominant state is 3.5 V for the CAN_H line and  
1.5 V for the CAN_L line.  
9
 复制成功!