6. SPECIFICATION OF INPUTS AND OUTPUTS
Note 2
Terminal 15 is off, device is shut down, and RTC capacitor is fully loaded
6.2 Negative power supply (BAT-)
6.2.1 Pinout
Connector
Pin no.
Function
C1
1, 2
Battery power supply input (BAT-)
6.2.2 Functional description
The pin for negative power supply. Always use all pins on the connector to distribute the current load.
6.2.3 Maximum ratings
Symbol
Parameter
Min
Max
Unit
I
BAT-max
Permanent supply current at V
BAT-
= 8 V, 25
○
C
2.3
A
6.3 Ignition on switch input (Terminal 15)
6.3.1 Pinout
Connector
Pin no.
Function
C1
18
Terminal 15 Input
6.3.2 Functional description
Terminal 15 switches the power supply of the Vision 312 device.
6.3.3 Power on/off sequence
The device boots if
• Terminal 15 is powered (typically BAT+) or
• Wake-up input is powered (typically BAT+)
Once the device has started, the application software is responsible for saving all data to flash memory
before it powers down the device. This is necessary to ensure data integrity.
6.3.4 Maximum ratings
Symbol
Parameter
Min
Max
Unit
V
in
Permanent (DC) input voltage
-33
33
V
V
in
Transient peak input voltage 500 ms
-50
50
V
V
in
Transient peak input voltage 1 ms
-200
200
V
© TTControl GmbH 2020. All rights reserved.
Confidential and Proprietary Information
19
Document Number:
D-156-G-02-001
