15

ATA6628/ATA6630 [DATASHEET]

9117I–AUTO–10/14

4.6

Unpowered Mode

If you connect battery voltage to the application circuit, the voltage at the VS pin increases according to the block capacitor

on the VCC capacitor and the load.

4-8. The watchdog needs to be triggered.

Figure 4-8. VCC versus VS for the VCC = 3.3V Regulator

4.7

High-speed Mode

If SP_MODE pin is high and the IC is in Normal Mode, the slew rate control is switched off. The slope time of the LIN falling

achieve a high baud rate it is recommended to use a small resistor (500

Ω) and a low capacitor. This allows very fast data

transmission up to 200kBaud, e.g., for electronic control (ECU) tests and microcontroller program or data download. In this

mode superior EMC performance is not guaranteed.

VCC

LIN

NRES

VS

Regulator drop voltage V

D

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

5.5

6

4.5

4

3.5

6

5.5

5

3

2.5

2

1.5

1

0.5

0