Rainbow Electronics ATA6630 - Manual (Page 7)

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 47
Ω
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
0 Off
1 On
Sleep
0 Off
1 Off