14
UM960 Series Peripheral Design
UC-08-M34 EN R1.0
Figure 5-2 Markings on the Right of the LED Indicators
6
UM960 Series Peripheral Design
TVS anti-surge protection is added at the input of the module. ESD protection is
added at all pins.
Use large and small VCC filter capacitors together, with a total capacitance greater
than 30 μF.
Add series resistors at the IO pins for the convenience of debugging.
VCCIN powers the module only. R22 is a large-size resistor (with high rated power)
to ensure the current capability. In the figure below, a 0805 resistor is used.
Removing R22, connecting a power supply wire at TP1 and a ground wire at TP3 (as
shown in Figure 7-1), you can use an external power to supply the module. This
method can be used to measure the input voltage and current of UM960 series.
Except pin14, the pin definitions of UM960 and UM960L are the same. Figure 6-1
shows the peripheral design of UM960, and for that of UM960L, you can keep the
pin14 floating, but it cannot be connected to ground, power supply or an output
interface.