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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： | 17/35页 |
| 文件大小： | 591K |
| 代理商： | MC33389 |
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MC33389
17
MC33389
WAKE-UP CAPABILITIES
Wake-up By SPI
In some applications, the microcontroller might be
supplied by an external VDD and remains powered in SBC
Sleep mode. In this case, a feature is provided which makes
possible to wake-up the SBC by SPI activity.
After V1 is totally switched off in sleep mode (V1<1.5V), if
a falling edge occurs on CSB (crossing 2.5V threshold), a
wake-up by SPI is detected, the SBC switches to
NormalRequest mode. A flag is set in ISR2.
Interrupt Output
The INTB output may be activated in the following cases:
V
bat
overvoltage (BatHigh)
V
bat
undervoltage (BatFail)
High temperature on V1 or V2
Pre-warning temperature on V1 or V2
CAN bus failure
SPI error
Local wake-up (can be used for low battery detection)
Bus wake-up
All these interrupts are maskable (See Register
Description Section).
RSTB Input/Output
The RSTB (reset) pin is an input/output pin. The typical
reset duration from SBC to microcontroller is 1ms. If longer
times are required, an external capacitor can be used. SBC
provides two RSTB output pull-up currents.
A typical 30
μ
A pull up when Vreset is below 2.5V and a
300uA pull up when reset voltage is higher than 2.5V.
RSTB is also an input for the SBC. It means the MC33389
is forced to NormalRequest mode after RSTB is released by
the microcontroller
General
When normally working in two-wire operating mode, the
CAN transmission can afford some ground shift between
different nodes without trouble. Nevertheless, in case of bus
failure, the transceiver switches to single-wire operation,
therefore working with less noise margin. The affordable
ground shift is decreased in this case.
The SBC is provided with a ground shift detection for
diagnosis purpose. Four ground shift levels are selectable
and the detection is stored in the GSLR register which is
accessible via the SPI.
Normal and
Standby
Detection active according to the option.
The event is stored in WUISR register.The
SBC may activate INTB output.
Real time state of each wake-up input
pin available in WUIRTI register
Sleep
Detection active according to the option.
The event is stored in WUISR register. The
SBC switches to NormalRequest mode
Emergency
No detection
SBC Modes
Local Wake-up Behaviour
GND SHIFT DETECTION
Detection Principle
The gnd shift to detect is selected via the SPI out of 4
different values (-0.7V, -1.2V, -1.7V, -2.2V). At each TX falling
edge (end of recessive state) CANH voltage is sensed. If it is
detected to be below the selected gnd shift threshold, the bit
SHIFT is set at 1 in GSLR register. No filter is implemented.
Required filtering for reliable detection should be done by
software (e.g. several trials).
The MC33389 is proposed in several package versions,
and also offers slight differences in term of functionalities.
The device version is identified in the device part number
by the first letter after the 389 number.
The package identification is done by the last two letters of
the part number (DW for SO28 wide body, DH for power
SO20).
Differences between A, C and D versions:
Behavior for V1 low:
A version
:
If V1 is below reset threshold, device enters reset mode,
and if V1 stays below reset threshold for more than 100ms,
then the SBC automatically enters sleep mode. This could be
the case if V1 is shorted or permanently over loaded, and
going to sleep mode would then avoid system over current
consumption.
This concerns the device reference: MC33389ADW and
MC33389ADH.
C and D versions
:
If V1 is below reset threshold, the SBC enters and stays in
reset mode (reset low) permanently.
This concerns the device reference: MC33389CDW and
MC33389CDH and MC33389DDW
Reset threshold specification:
A and C versions:
The reset threshold is defined per table “electrical
parameter, V1 pin 5V.
This concerns device MC33389ADW, ADH, CDW and
CDH
D version
: The reset threshold for the D version is slightly
higher than the A and C versions. Refer to device electrical
parameter table, V1 pin 5V
This concerns device reference MC33389DDW.
DEVICE DIFFERENT VERSIONS
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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