User Instructions

13
R
I/O
GPIO port, can be used as LED drive PWM output, default
corresponding to red light
14
CW
I/O
GPIO port, can be used as LED driver PWM output, default
corresponding to cold white light
15
RX
I/O
Serial port receiving pin UART RX
16
TX
I/O
Serial port sending pin UART TX
Note: P stands for power supply pin, I/O stands for input and output pin, AI
stands for analog input. If you have your own requirements for the light color
controlled by the PWM output, please contact us.
4 Electrical parameters
4.1 Absolute electrical parameters
Table 4.1 Absolute parameters
Parameter
Description
Min
Max
Unit
Ts
Storage
temperature
-65
150
℃
VCC
Supply
voltage
-0.3
3.9
V
Electrostatic discharge
voltage (human body
model)
TAMB-25℃
-
2
KV
Electrostatic discharge
voltage (machine model)
TAMB-25℃
-
0.5
KV
4.2 Working conditions
Table 4.2 Normal working conditions
Parameter
Description
Min
Typical
Max
Unit
Ta
Operating
temperature
-40
-
85
℃
VCC
Operating Voltage
2.8
3.3
3.6
V
V
IL
IO low level input
VSS
-
VCC*0.3
V
V
IH
IO high level
input
VCC*0.7
-
VCC
V
V
OL
IO low level
output
VSS
-
VCC*0.1
V
Vo
H
IO high level
output
VCC*0.9
-
VCC
V