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鍙冩暩(sh霉)璩囨枡
| 鍨嬭櫉锛� | MC33889DEG |
| 寤犲晢锛� | Freescale Semiconductor |
| 鏂囦欢闋佹暩(sh霉)锛� | 26/59闋� |
| 鏂囦欢澶�?銆�?/td> | 0K |
| 鎻忚堪锛� | IC SYSTEM BASE W/CAN 28-SOIC |
| 妯欐簴鍖呰锛� | 24 |
| 鎺у埗鍣ㄩ鍨嬶細 | 绯荤当(t菕ng)鍩虹(ch菙)鑺墖 |
| 鎺ュ彛锛� | CAN |
| 闆绘簮闆诲锛� | 5.5 V ~ 18 V |
| 闆绘祦 - 闆绘簮锛� | 45mA |
| 宸ヤ綔婧害锛� | -40°C ~ 125°C |
| 瀹夎椤炲瀷锛� | 琛ㄩ潰璨艰 |
| 灏佽/澶栨锛� | 28-SOIC锛�0.295"锛�7.50mm 瀵級 |
| 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁濓細 | 28-SOIC W |
| 鍖呰锛� | 绠′欢 |
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Analog Integrated Circuit Device Data
32
Freescale Semiconductor
33889
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
General description
CAN driver:
The CANH driver is a 鈥渉igh side鈥� switch to the V2 voltage (5.0 V). The CANL driver is a 鈥渓(f膩)ow side鈥� switch to gnd.The turn on
and turn off time is controlled in order to control the slew rate, and the CANH and CANL driver have a current limitation as well
as an over temperature shutdown.
The CAN H or CANL driver can be disabled in case a failure is detected on the CAN bus (ex: CANH driver is disabled in case
CANH is shorted to VDD). The disabling of one of the drivers is controlled by the CAN logic and the communication continues via
the other drivers. When the failure is removed the logic detects a failure recovery and automatically reenables the associated
driver.
The CAN drivers are also disabled in case of a Tx failure detection.
Bus termination:
The bus is terminated by pull-up and pull-down resistors, which are connected to GND, VDD, or VBAT through dedicated RTL
and RTH pins and internal switches Srh, Srl, Stvbat. Each node must have a resistor connected between CANH and RTH and
between CANL and RTL. The resistor value should be between 500 and 16000 ohm.
Transmitter Function
CAN bus levels are called Dominant and Recessive, and correspond respectively to Low and High states of the TX input pin.
Dominant state:
The CANH and CANL drivers are on. The voltage at CANL is <1.4 V, the voltage at CANH is >3.6 V, and the differential voltage
between CANH and CANL line is >2.2 V (3.6 -1.4 V).
Recessive state:
This is a weak state, where the CANH and CANL drivers are off. The CANL line is pulled up to 5 V via the RTL pin and RTL
resistor, and the CANH line is pull down via the RTH and RTH resistor. The resultant voltage at CANL is 5.0 V and 0V at CANH.
The differential voltage is -5.0 V (0V - 5.0 V). The recessive state can be over written by any other node forcing a Dominant state.
Receiver Function
In normal operation (no bus failures), RX is the image of the differential bus voltage. The differential receiver inputs are
connected to CANH and CANL.
The device incorporates single ended comparators connected to CANH and CANL in order to monitor the bus state as well as
detect bus failures. Failures are reported via the SPI.
In normal operation when no failure is present, the differential comparator is active. Under a fault condition, one of the two
CANH or CANL pins can be become non-operational. The single ended comparator of either CANH or CANL is activated and
continues to report a bus state to Rx pin. The device permanently monitors the bus failure and recovery, and as soon as fault
disappears, it automatically switches back to differential operation.
CAN interface operation Mode
The CAN has 3 operation modes: TxRx (Transmit-Receive), Receive Only, and Term-VBAT (Terminated to VBAT). The mode
is selected by the SPI. As soon as the MC33889 mode is sleep or stop (selected via MCR register), the CAN interface
automatically enters Tem-Vbat mode.
Tx Rx mode:
In this mode, the CAN drivers and receivers are enabled, and the device is able to send and receive messages. Bus failures
are detected and managed, this means that in case of a bus failure, one of the CAN drivers can be disabled, but communication
continues via the remaining drivers.
Receive Only mode:
In this mode, the transmitter path is disabled, so the device does not drive the bus. It maintains CANL and CANH in the
recessive state. The receiver function operates normally.
鐩搁棞(gu膩n)PDF璩囨枡 |
PDF鎻忚堪 |
|---|---|
| VE-22V-IX-S | CONVERTER MOD DC/DC 5.8V 75W |
| V72A12C400B3 | CONVERTER MOD DC/DC 12V 400W |
| VI-23B-IX-S | CONVERTER MOD DC/DC 95V 75W |
| V48C5M75BL3 | CONVERTER MOD DC/DC 5V 75W |
| V48C5M75BG2 | CONVERTER MOD DC/DC 5V 75W |
鐩搁棞(gu膩n)浠ｇ悊鍟�/鎶€琛�(sh霉)鍙冩暩(sh霉) |
鍙冩暩(sh霉)鎻忚堪 |
|---|---|
| MC33889DPEG | 鍔熻兘鎻忚堪:CAN 鎺ュ彛闆嗘垚闆昏矾 SBC-LITE-LS-CAN RoHS:鍚� 鍒堕€犲晢:Texas Instruments 椤炲瀷:Transceivers 宸ヤ綔闆绘簮闆诲:5 V 闆绘簮闆绘祦: 宸ヤ綔婧害鑼冨湇:- 40 C to + 85 C 灏佽 / 绠遍珨:SOIC-8 灏佽:Tube |
| MC33889DPEGR2 | 鍔熻兘鎻忚堪:CAN 鎺ュ彛闆嗘垚闆昏矾 SBC-LITE-LS-CAN RoHS:鍚� 鍒堕€犲晢:Texas Instruments 椤炲瀷:Transceivers 宸ヤ綔闆绘簮闆诲:5 V 闆绘簮闆绘祦: 宸ヤ綔婧害鑼冨湇:- 40 C to + 85 C 灏佽 / 绠遍珨:SOIC-8 灏佽:Tube |
| MC33889DW | 鍔熻兘鎻忚堪:IC SYSTEM BASE W/CAN 28-SOIC RoHS:鍚� 椤炲垾:闆嗘垚闆昏矾 (IC) >> 鎺ュ彛 - 鎺у埗鍣� 绯诲垪:- 妯欐簴鍖呰:4,900 绯诲垪:- 鎺у埗鍣ㄩ鍨�:USB 2.0 鎺у埗鍣� 鎺ュ彛:涓茶 闆绘簮闆诲:3 V ~ 3.6 V 闆绘祦 - 闆绘簮:135mA 宸ヤ綔婧害:0°C ~ 70°C 瀹夎椤炲瀷:琛ㄩ潰璨艰 灏佽/澶栨:36-VFQFN 瑁搁湶鐒婄洡 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁�:36-QFN锛�6x6锛� 鍖呰:* 鍏跺畠鍚嶇ū:Q6396337A |
| MC33889DWR2 | 鍔熻兘鎻忚堪:IC SYSTEM BASE W/CAN 28-SOIC RoHS:鍚� 椤炲垾:闆嗘垚闆昏矾 (IC) >> 鎺ュ彛 - 鎺у埗鍣� 绯诲垪:- 妯欐簴鍖呰:4,900 绯诲垪:- 鎺у埗鍣ㄩ鍨�:USB 2.0 鎺у埗鍣� 鎺ュ彛:涓茶 闆绘簮闆诲:3 V ~ 3.6 V 闆绘祦 - 闆绘簮:135mA 宸ヤ綔婧害:0°C ~ 70°C 瀹夎椤炲瀷:琛ㄩ潰璨艰 灏佽/澶栨:36-VFQFN 瑁搁湶鐒婄洡 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁�:36-QFN锛�6x6锛� 鍖呰:* 鍏跺畠鍚嶇ū:Q6396337A |
| MC33895FC | 鍔熻兘鎻忚堪:IC H-BRIDGE QUAD W/LIN 32-QFN RoHS:鍚� 椤炲垾:闆嗘垚闆昏矾 (IC) >> 鎺ュ彛 - 椹�(q奴)鍕曞櫒锛屾帴鏀跺櫒锛屾敹鐧�(f膩)鍣� 绯诲垪:- 妯欐簴鍖呰:1,000 绯诲垪:- 椤炲瀷:鏀剁櫦(f膩)鍣� 椹�(q奴)鍕曞櫒/鎺ユ敹鍣ㄦ暩(sh霉):2/2 瑕�(gu墨)绋�:RS232 闆绘簮闆诲:3 V ~ 5.5 V 瀹夎椤炲瀷:琛ㄩ潰璨艰 灏佽/澶栨:16-SOIC锛�0.295"锛�7.50mm 瀵級 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁�:16-SOIC 鍖呰:甯跺嵎 (TR) |
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