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| 型号： | MC33389 |
| 厂商： | 飞思卡尔半导体(中国)有限公司 |
| 英文描述： | System Basis Chip with Low Speed Fault Tolerant CAN(带低速容错CAN接口的系统基片) |
| 中文描述： | 系统基础芯片与低速容错CAN（带低速容错的CAN接口的系统基片） |
| 文件页数： | 15/35页 |
| 文件大小： | 591K |
| 代理商： | MC33389 |
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MC33389
15
MC33389
SBC MODES
be taken into account by the SBC (except for the go to
Emergency mode).
Correspondence between SBC and CAN Transceiver Modes
The table here below gives the different possible CAN
transceiver modes versus SBC modes.
Table 14. CAN Modes Versus SBC Modes
Note: In case V2 is turned off either by SPI command
(standby mode) or by the SBC itself due to V2 over load
condition (V2 short to gnd or V2 over temperature) the CAN is
automatically set into the Bus standby mode and does not
return to TXRX mode automatically when V2 is back to 5V.
The CAN must be re configured to TXRX or RXonly mode
after a V2 turn off.
Watchdog
General
The software window watchdog function is used to
monitors the microcontroller operation in Normal and in
Standby modes. The window watchdog timing is derived from
the SBC-clock. The desired watchdog timing must be first
transmitted during the SBC configuration, in NormalRequest
mode, via SPI to SWCR register. It can also be changed later
on. Selectable watchdog timings are 5ms, 10ms, 20ms,
33ms, 50ms, 75ms, 100ms and 200ms. These timings
correspond to the full disable window plus full enable window.
Figure 15. Window Watchdog Timing
As soon as the watchdog trigger is received in the enable
window, the internal counter is reset and start a new disable
window. The SBC triggers the watchdog word at CSB low to
high transition. Any watchdog trigger outside the enable
window leads to SBC reset.
In Normal and Standby Modes
When SBC Is In The
Following Mode
CAN Transceiver
Can Be In
Reset condition
Bus Standby mode
NormalRequest
Bus Standby mode
Normal
RXTX or RXOnly or BusStandby
Standby
Bus Standby
Sleep
Bus Standby
Emergency
Bus Standby
Normal & V2 off (over load)
(note)
Bus standby
watchdog trigger
SBC watchdog window
earliest trigger time
latest
trigger
time
disabled window
nom. trigger period
time out
latest
reset
time
SBC-Reset OUT
50%
50%
Watchdog Timing
enable window
In normal mode the SBC get the watchdog word from the
microcontroller via SPI. In case of a trigger time failure (no
trigger or trigger outside the enable window) the SBC-reset is
switched to active.
NormalRequest, Sleep And Emergency Mode
Watchdog is not active in this modes.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC33389CDH | 功能描述:IC SYSTEM BASIS W/CAN 20-HSOP RoHS:是 类别:集成电路 (IC) >> 接口 - 控制器 系列:- 标准包装:4,900 系列:- 控制器类型:USB 2.0 控制器 接口:串行 电源电压:3 V ~ 3.6 V 电流 - 电源:135mA 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:36-VFQFN 裸露焊盘 供应商设备封装:36-QFN（6x6） 包装:* 其它名称:Q6396337A |
| MC33389CDHR2 | 功能描述:IC SYSTEM BASE W/CAN 20-HSOP RoHS:是 类别:集成电路 (IC) >> 接口 - 控制器 系列:- 标准包装:4,900 系列:- 控制器类型:USB 2.0 控制器 接口:串行 电源电压:3 V ~ 3.6 V 电流 - 电源:135mA 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:36-VFQFN 裸露焊盘 供应商设备封装:36-QFN（6x6） 包装:* 其它名称:Q6396337A |
| MC33389CDW | 功能描述:网络控制器与处理器 IC SYSTEM BASIC CHIPS 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 |
| MC33389CDWR2 | 功能描述:网络控制器与处理器 IC SYSTEM BASIC CHIPS 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 |
| MC33389DDW | 功能描述:网络控制器与处理器 IC SBC SOW28 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 |
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