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參數(shù)資料
| 型號(hào)： | MC33897 |
| 廠商： | 飛思卡爾半導(dǎo)體(中國(guó))有限公司 |
| 元件分類： | CAN |
| 英文描述： | Single-Wire CAN Transceiver(單線CAN收發(fā)器) |
| 中文描述： | 單線CAN收發(fā)器（單線的CAN收發(fā)器） |
| 文件頁數(shù)： | 12/16頁 |
| 文件大?。?/td> | 345K |
| 代理商： | MC33897 |
33897
12
Go to: www.freescale.com
Mode Control
The MODE pins control the transmitter filtering and BUS
voltage and the IC sleep mode operation.
Table 1
shows the
mode versus the logic levels on MODE0 and MODE1.
The MODE0 and MODE1 pins have a weak pull-down in the
IC so that in case the pins are not driven, the device will enter
the sleep mode. This is usually the situation as the MCU comes
out of reset, before the driving signals have been configured as
outputs.
RX Data
The data received on the bus is translated to logic levels on
this pin. This pin is a logic high when the bus is in the recessive
state (near zero volts) and is low when the bus is in either the
normal or high-voltage dominant state.
This is an open-drain type of output that requires an external
resistor to pull it up. When the device is in sleep mode, the
output will be off unless a high-voltage wake-up level is
detected on the bus. If the wake-up level is detected, the output
will be driven by the data on the bus. If the level of the data
returns to normal level, the output will return to off after a short
delay unless a non-sleep mode condition is set by the MCU.
LOAD Switch
This switch is on in all operating modes unless a loss of
ground is detected. If this happens, the switch is opened and
the resistor normally attached to its pin will be no longer pass
current to or from the bus.
CNTL Output
This logic level signal is used to control a V
CC
regulator.
When the output is low, the V
CC
regulator is expected to
shutdown. This is normally used to shut down the MCU and all
the devices powered by V
CC
when the IC is in sleep mode. This
is done to save power. When the part is taken out of the sleep
mode by the higher-than-normal bus voltage, this pin is
asserted high and the V
CC
regulator brings its output up to the
regulated level. This starts the MCU, which controls the mode
of the IC. The MCU must change the mode signals to non-sleep
mode levels in order to keep this pin from going low. There is a
delay to allow the MCU to fully wake up and take control after
the high-voltage signaling is removed before the level on this
output returns low. After a delay time, even if the bus is at high
voltage, the IC will return to sleep mode if both MODE pins are
low.
VBATT Input
This power input is not reverse battery protected and should
use an external diode to protect it from damage owing to
reverse battery if this protection is desired. The voltage drop of
the diode must be taken into consideration when the operating
range of the system is being determined. This diode is generally
used to protect the entire module from reverse battery and
should be selected accordingly.
BUS I/O
This input/output may require ESD and/or EMI external
circuitry. A set of components is shown in the Simplified
Application Diagram on the front of this datasheet. The value of
the capacitor should be adjusted downward in direct proportion
to the added capacitance of the ESD or EMI circuits. The series
resistance of the inductor should be kept below 3.5
to prevent
its voltage drop from significantly degrading system noise
margins.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
n
.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| MC33897AEF | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC SWCAN PB FREE P 2.4 RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| MC33897AEFR2 | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC SWCAN PB FREE P 2.4 RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| MC33897BEF | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC SINGLE WIRE CAN 8 LEAD RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| MC33897BEFR2 | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC SINGLE WIRE CAN 8 LEAD RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| MC33897CTEF | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC SINGLE WIRE CAN RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
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