Rainbow-electronics ATA6630 Manual do Utilizador descarregar pdf (Página 7)

9117C–AUTO–10/09

ATA6628/ATA6630 [Preliminary]

3.20 DIV_ON Input Pin

The DIV_ON pin is a low voltage input. It is used to switch on or off the internal voltage divider

PV output directly with no time limitation (see Table 3-1 on page 7). It is switched on if DIV_ON

is high or it is switched off if DIV_ON is low. In Sleep Mode the DIV_ON functionality is disabled

and PV is off. An internal pull-down resistor is implemented.

3.21 VBATT Input Pin

The VBATT is a high voltage input pin to supply the internal voltage divider. In an application

with battery voltage monitoring, this pin is connected to V

Battery

via a 47Ω resistor in series and a

10 nF capacitor to GND (see Figure 9-2 on page 31). The the divider ratio is 1:6.

3.22 PV Output Pin

For applications with battery monitoring, this pin is directly connected to the ADC of a microcon-

troller. For buffering the ADC input an external capacitor might be needed. This pin guarantees a

voltage and temperature stable output of a V

Battery

ratio. The PV output pin is controlled by the

DIV_ON input pin.

3.23 SP_MODE Input Pin

The SP_MODE pin is a low-voltage input. High-speed Mode of the transceiver can be activated

via a high level during Normal Mode. Return to LIN 2.x Transceiver Mode with slope control is

possible if you switch the SP_MODE pin to low.

Table 3-1. Table of Voltage Divider

Mode of Operation Input DiV_ON Voltage Divider Output PV

Fail-safe/Normal/

High-speed/Silent

0Off

1On

Sleep

0Off

1Off

1 2 3 4 5 6 7 8 9 10 11 12 ... 33 34

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Rainbow-electronics ATA6630 Manual do Utilizador Página 7