Sleep Mode Led Circuit - Newland NLS-EM20 Integration Manual

Sleep Mode LED Circuit

The circuit below is used to drive an external LED for indicating that the engine is in sleep mode. The left
part shows internal Sleep Mode LED driver circuit on the decoder board and the right part shows external
circuit that users may utilize in actual application. The PWRDWN signal is from Pin 8 of the 12-pin FPC
connector.
Users can adjust the external circuit and its function as per actual needs, on condition that the external
circuit matches the internal circuit.
Internal LED Driver Circuit
External Circuit
Fig. 4-6
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