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STM32L151x6/8/B, STM32L152x6/8/B
Electrical characteristics
103
6.1.7
Optional LCD power supply scheme
Figure 13. Optional LCD power supply scheme
1. Option 1: LCD power supply is provided by a dedicated VLCD supply source, VSEL switch is open.
2. Option 2: LCD power supply is provided by the internal step-up converter, VSEL switch is closed, an
external capacitance is needed for correct behavior of this converter.
6.1.8 Current
consumption
measurement
Figure 14. Current consumption measurement scheme
MS32462V1
V
DD1/2/.../N
N x 100 nF
+ 1 x 10 μF
Step-up
Converter
V
SS1/2/.../N
V
DD
100 nF
V
LCD
V
LCD
C
EXT
LCD
VSEL
Option 1
Option 2
1[Q)
[)
1[9
66
1[9
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9
66$
Q)
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$
9
5()
9
5()
9
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9
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