Datasheet > ATA6629-GAQW

ATA6629-GAQW

更新时间： 2024-02-17 16:02:43

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ATA6629-GAQW 技术参数

4.2

Silent Mode

A falling edge at EN while TXD is high switches the IC into silent mode. The TXD signal has to be logic high during the mode

select window (Figure 4-3 on page 8). The transmission path is disabled in silent mode. The overall supply current from V_Batt

is a combination of the I_VSsilent= 35µA plus the V_CCregulator output current I_VCC

Figure 4-2. Switch to Silent Mode

Normal Mode

Silent Mode

Mode select window

TXD

t_d= 3.2μs

NRES

VCC

Delay time silent mode

t_d_sleep = maximum 20μs

LIN

LIN switches directly to recessive mode

In silent mode the internal slave termination between pin LIN and pin VS is disabled to minimize the current consumption in

case pin LIN is short-circuited to GND. Only a weak pull-up current (typically 10µA) between pin LIN and pin VS is present.

The silent mode can be activated independently from the current level on pin LIN.

If an undervoltage condition occurs, NRES is switched to low and the Atmel^®ATA6629/ATA6631 changes its state to

fail-safe mode.

A voltage less than the LIN pre-wake detection V_LINLat pin LIN activates the internal LIN receiver and starts the wake-up

detection timer.

ATA6629/ATA6631 [DATASHEET]

9165E–AUTO–04/14

1...4 5 678 9 10...26

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