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参数资料
| 型号： | MCZ33989EG |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 54/72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
58
Freescale Semiconductor
33989
TYPICAL APPLICATIONS
SUPPLEMENTAL APPLICATION NOTES
Figure 46. Node is in Bus Off State
SOFTWARE ASPECTS
Introduction
This section describes the MC33989 operation and the microcontroller SPI software routine that has to be executed in order
to control the device. Structure of the Byte: ADR (3 bits) + R/W (1bit) + DATA (4 bits). MSB is sent first. Refer to MC33989
specifications for more details.
How to Enter in Normal Mode After a Power-Up
Figure 47. Normal Mode After Power-up
The DC current can be calculated as follows:
Idc= (Time in dominant * peak current of the fault) / total error frame time
Idc= (17+15)*peak current / ((23*15)+1408)=32 / 1753*peak current
Example for CANL2Vbat (peak current = - 240 mA): Idc = 32*(-) 240 / 1753=(-)4.38 mA
TX
RX
Rx is driven only during the glitch occuring on the CAN bus (the dominant time is shorter than a bit time)
TEC=128: the node reaches the error passive level
23 recessive bits: CAN passive error frame
Node sends one dominant bit. As there is still the fault, the TEC is incremented by 8 each time.
128 occurrences of 11 recessive bits
BUS OFF is recover
TEC reaches 255: the node is BUS OFF
read LX wake-up flag
Write watchdog
X is the period of the watchdog ex:$00 for 10 ms
Clear V2low, Vsuplow flags
Clear Batfail, Gfail,Wdrst flags
read CAN/WU flag
ALL FLAGS ARE READ
Write watchdog
X is the period of the watchdog ex $00 for 10 ms
note:this register has to be refreshed before the end of the watchdog
period
Power-up
Reset
Normal request
Normal
Read IOR ($60)
Read MCR ($00)
Read CAN ($40)
Write TIM1= $BX
Read WUR ($80)
Write TIM1 =$BX
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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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