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Smart LTE Module Series
SC650T Hardware Design
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Table 27: Pin Definition of LED Driver Interfaces
Pin Name
Pin No.
I/O
Description
Comment
LED_RED
23
PO
Red LED light
The output current does not
exceed 12mA
LED_GRN
24
PO
Green LED light
The output current does not
exceed 12mA
LED_BLU
25
PO
Blue LED light
The output current does not
exceed 12mA
A reference circuit design for LED interfaces is shown below.
GRN
R1
0R
VPH_PWR
RED
R2
0R
VPH_PWR
BLU
R3
0R
VPH_PWR
1nF
1nF
C1
C2
1nF
C3
Figure 32: Reference Circuit Design for LED Interfaces