Datasheet > ATA6560_14

ATA6560_14

更新时间： 2022-02-26 13:19:32

品牌	Logo	应用领域
爱特美尔 - ATMEL		/
页数	文件大小	规格书
17页	939K
描述
High-speed CAN Transceiver with Standby Mode CAN FD Ready

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ATA6560_14 数据手册

Figure 2-4. Release of Transmission after Overtemperature Condition

Failure

Overtemp

Overtemperature

TXD

V_IO

GND

BUS V_DIFF

(CANH-CANL)

RXD

V_IO

GND

2.2.6 Short-Circuit Protection of the Bus Pins

The CANH and CANL bus outputs are short-circuit protected, either against GND or a positive supply voltage. A current-

limiting circuit protects the transceiver against damage. If the device is heating up due to a continuous short on CANH or

CANL, the internal overtemperature protection switches the bus transmitter off.

2.2.7 RXD Recessive Clamping

This fail-safe feature prevents the controller from sending data on the bus if it’s RXD line is clamped to HIGH (e.g.,

recessive). That is, if the RXD pin cannot signalize a dominant bus condition because it is e.g, shorted to VCC, the

transmitter within ATA6560/ATA6561 is disabled to avoid possible data collisions on the bus. In normal and silent mode

(only ATA6560), the device permanently compares the state of the high-speed comparator (HSC) with the state of the RXD

pin. If the HSC indicates a dominant bus state for more than t_{RC_det}without the RXD pin doing the same, a recessive

clamping situation is detected and the device is forced into silent mode. This fail-safe mode is released by either entering

standby or unpowered mode or if the RXD pin is showing a dominant (e.g., LOW) level again.

Figure 2-5. RXD Recessive Clamping Detection

CAN

TXD

RXD

Operation

Normal

Silent

Normal

Mode

If the clamping condition is removed and a

dominant bus is detected, the transceiver

goes back to normal mode.

ATA6560/ATA6561 [DATASHEET]

9288I–AUTO–09/14

1...4 5 678 9 10...17

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