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參數(shù)資料
| 型號(hào)： | 0CANH-002-XTD |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類(lèi)： | 網(wǎng)絡(luò)接口 |
| 英文描述： | DATACOM, INTERFACE CIRCUIT, PDSO8 |
| 封裝： | 0.150 INCH, GREEN, PLASTIC, SOIC-8 |
| 文件頁(yè)數(shù)： | 8/13頁(yè) |
| 文件大?。?/td> | 573K |
| 代理商： | 0CANH-002-XTD |
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AMIS-30660 High-Speed CAN Transceiver
Data Sheet
6.3 Pin Description
Table 2: Pin Out
Pin
Name Description
1
TxD
Transmit data input; low input → dominant driver; internal pull-up current
2
GND Ground
3
VCC
Supply voltage
4
RxD
Receive data output; dominant transmitter→ low output
5
VREF
Reference voltage output
6
CANL Low-level CAN bus line (low in dominant mode)
7
CANH High-level CAN bus line (high in dominant mode)
8
S
Silent mode control input; internal pull-down current
7.0 Functional Description
7.1 Operating Modes
The behavior of AMIS-30660 under various conditions is illustrated in Table 3 below. In case the device is powered, one of two
operating modes can be selected through pin S.
Table 3: Functional table of AMIS30660; X = don’t care
VCC
pin TxD
pin S
pin CANH
pin CANL
Bus state
pin RxD
4.75 to 5.25.V
0
0 (or floating)
High
Low
Dominant
0
4.75 to 5.25.V
X
1
VCC/2
Recessive
1
4.75 to 5.25.V
1 (or floating)
X
VCC/2
Recessive
1
VCC<PORL (unpowered)
X
0V<CANH<VCC
0V<CANL<VCC
Recessive
1
PORL<VCC<4.75V
>2V
X
0V<CANH<VCC
0V<CANL<VCC
Recessive
1
7.1.1. High-Speed Mode
If pin S is pulled low (or left floating), the transceiver is in its high-speed mode and is able to communicate via the bus lines. The signals
are transmitted and received to the CAN controller via the pins TxD and RxD. The slopes on the bus line outputs are optimized to give
extremely low electromagnetic emissions.
7.1.2. Silent Mode
In silent mode, the transmitter is disabled. All other IC functions continue to operate. The silent mode is selected by connecting pin S to
VCC and can be used to prevent network communication from being blocked, due to a CAN controller which is out of control.
7.2 Over-temperature Detection
A thermal protection circuit protects the IC from damage by switching off the transmitter if the junction temperature exceeds a value of
approximately 160°C. Because the transmitter dissipates most of the power, the power dissipation and temperature of the IC is
reduced. All other IC functions continue to operate. The transmitter off-state resets when pin TxD goes high. The thermal protection
circuit is particularly necessary when a bus line short-circuits.
7.3 TxD Dominant Time-out Function
A TxD dominant time-out timer circuit prevents the bus lines from being driven to a permanent dominant state (blocking all network
communication) if pin TxD is forced permanently low by a hardware and/or software application failure. The timer is triggered by a
negative edge on pin TxD. If the duration of the low-level on pin TxD exceeds the internal timer value tdom, the transmitter is disabled,
driving the bus into a recessive state. The timer is reset by a positive edge on pin TxD.
4
AMI Semiconductor
– M-20682-003, Jun 07
www.amis.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 0CANH-002-XTP/AMIS30660 | 制造商:ON Semiconductor 功能描述: |
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| 0CANN-001-XTD | 制造商:Rochester Electronics LLC 功能描述: 制造商:AppliedMicro 功能描述: 制造商:ON Semiconductor 功能描述: |
| 0CAS020.H | 制造商:Littelfuse 功能描述:Yel indicating automotive fuse,20A 32V |
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