ATA6629(2014) 데이터 시트보기 (PDF) - Atmel Corporation

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ATA6629
(Rev.:2014)

LIN Bus Transceiver with Integrated Voltage Regulator

Atmel Corporation 

3.9

3.10

Output Pin (RXD)

This pin reports the state of the LIN bus to the microcontroller. LIN high (recessive state) is reported by a high level at RXD;

LIN low (dominant state) is reported by a low level at RXD. The output has an internal pull-up resistor with typically 5kΩ to

VCC. The AC characteristics are measured with an external load capacitor of 20pF.

The output is short-circuit protected. In unpowered mode (that is, VS = 0V), RXD is switched off.

Enable Input Pin (EN)

The enable input pin controls the operation mode of the device. If EN is high, the circuit is in normal mode, with transmission

paths from TXD to LIN and from LIN to RXD both active. The VCC voltage regulator operates with 3.3V/5V/85mA output

capability.

If EN is switched to low while TXD is still high, the device is forced to silent mode. No data transmission is then possible, and

the current consumption is reduced to IVS typ. 35µA. The VCC regulator has its full functionality.

If EN is switched to low while TXD is low, the device is forced to sleep mode. No data transmission is possible, and the

voltage regulator is switched off.

ATA6629/ATA6631 [DATASHEET]

5

9165F–AUTO–10/14

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