Ignition Power Management Quick Guide - Cartft FLEETPC-4-F User Manual

Register Definitions
DO Data Register – 0x31
Bit
3
2
1
0
DI Status Register – 0x30
Bit
3
2
1
0
4.2 Ignition Power Management Quick Guide
Startup conditions from the IGNITION signal:
 IGNITION startup signal must be valid during 3 sec. (anti‐noise protection).

Typically, the system can start only from the IGNITION signal because the startup PIC controller is
disconnected from the power source.
Startup Procedure by Ignition
9VDC~60VDC
Power Input
User Manual
Name
GPIO4_OUT
GPIO3_OUT
GPIO2_OUT
GPIO1_OUT
Name
GPIO4_IN
GPIO3_IN
GPIO2_IN
GPIO1_IN
Check
IGN Status
R/W
R/W GPIO4 output data.
R/W GPIO3 output data.
R/W GPIO2 output data.
R/W GPIO1 output data.
R/W
R GPIO4 pin status.
R GPIO3 pin status.
R GPIO2 pin status.
R GPIO1 pin status.
IGN on (High)
more than 3 sec
DESCRIPTION
DESCRIPTION
System
Turn on
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