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参数资料
| 型号： | MCZ33989EG |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 53/72页 |
| 文件大小： | 0K |
| 描述： | IC SYSTEM BASIS CHIP CAN 28-SOIC |
| 标准包装： | 26 |
| 系列： | * |
| 应用： | * |
| 接口： | * |
| 电源电压： | * |
| 封装/外壳： | 28-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 28-SOIC W |
| 包装： | 管件 |
| 安装类型： | 表面贴装 |
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Analog Integrated Circuit Device Data
Freescale Semiconductor
57
33989
TYPICAL APPLICATIONS
SUPPLEMENTAL APPLICATION NOTES
Table 36. Current in Case of Bus Short Conditions
Notes
34.
For the failure case which leads to loss of communication and current flow for a very short time period as illustrated in Figure 45. So for
instance for CANH to gnd, the impact of the peak current on the V2 voltage regulator is very limited. The TX, RX, and CAN signal in the
figure are placed in a CANH to CANL short-circuit condition.
Figure 45. CANH to CANL Short-circuit Condition
The sender node drives TX and the CAN bus, but doesn’t receive anything on RX, so the CAN protocol handler inside the
MCU increases its TEC transmit error counter by 8.The sender node keeps driving TX in dominant until it reaches the error
passive level (TEC=128).
When it is in error passive, it sends a passive error frame (23 bits in recessive). Then the sender nodes drive the bus and send
only 1 dominant bit, and as nothing is received on RX, the TEC is incremental by 8. After TX is driven 15 times, the TEC reaches
255: then the node is in the BUS OFF state.
When the node is in the BUS OFF state, it needs 128 occurrences of 11 recessive bits (1.408 ms at 1.0 MB) in order to recover
and be able to transmit again.
Condition
I term
current
I_H
current
I-L
current
Comment
peak current (mA)
No failure
32
0
Normal communication.
CANH line to GND
0
150
0
No communication. Current flowing from V2 pin, during CAN driver dominant
state. (34)
CANH line to 5.0 V
55
-55
0
communication OK.
CANH line to +VBAT
150
-150
0
communication OK.
CANL line to GND
50
0
50
communication OK.
CANL line to 5.0 V
0
-150
no communication (34)
CANL line to VBAT
0
-240
no communication (34)
CANH line shorted to
CANL line
0
70
-70
no communication (34)
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相关代理商/技术参数 |
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|---|---|
| MCZ33989EG | 制造商:Freescale Semiconductor 功能描述:IC SYSTEM BASIS W/CAN TRANCEIVER |
| MCZ33989EGR2 | 功能描述:网络控制器与处理器 IC SBC-HS RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| MCZ33990EF | 功能描述:网络控制器与处理器 IC CLASS B SERIAL TRANS. RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| MCZ33990EF | 制造商:Freescale Semiconductor 功能描述:TRANCEIVER J-1850 CLASS B 8SOIC |
| MCZ33990EF/R2 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Enhanced Class B Serial Transceiver |
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