ATA6620N 데이터 시트보기 (PDF) - Atmel Corporation

부품명

상세내역

제조사

ATA6620N

LIN Bus Transceiver with Integrated Voltage Regulator

Atmel Corporation 

Figure 4-5. LIN Wake-up Diagram from Sleep Mode

LIN Bus

TXD

VLIN < 0.4 VS

ATA6620N

Pre-normal Mode

Normal Mode

RXD

VCC

EN

NRES

Low or floating

Bus wake-up filtering time

tbus

Off state

Regulator wake-up time

Node in sleep mode

Low or floating

Reset

time

Low

On state

EN High

Microcontroller start-up

time delay

4.2.3

Wake Up from Sleep/Silent Mode at an Insufficient Falling Edge at Pin LIN

If the ATA6620N is in Sleep mode or Silent mode and the voltage at the LIN Bus falls to a value

lower than VLINL < VS – 3.3V (see “Electrical Characteristics” numbers 9.5 and 9.6) but higher

than 0.6 × VS, then a wake up is detected and the circuit switches to pre-normal mode and the

internal NMOS- transistor connected to the pin TXD is switched on and pulls down the pin TXD

to Ground. The following figure shows the corresponding diagram for the wake-up from silent

mode. The wake-up process from Sleep mode works analogue to this.

9

4850I–AUTO–09/09

Share Link: