User Manual

December 2009 Revision 2.1 49/68
Table 5: GPIO Pins - Electrical Characteristics Max Ratings
Parameters Min. Typ. Max. Unit
Input Voltage Range 0 -- 28 V
Input Voltage (Low Level) 0 -- 0.9 V
Input Voltage (High Level) 1.5 -- 28 V
Output Voltage Range 0 -- 28 V
Maximum Continuous Output
Current
--
--
1.4 A
Output Over Current Protection 1.9 2.8 3.8 A
Figure 26: Internal Circuit of GPIO and External Supply Wiring in Output Mode
In output mode the LSP3 GPIO can only sink current to ground. User
needs to provide adequate DC Limited Current Supply to Port#1 and
Port#2 (Open Drain). See Figure 26 for detailed circuitry.