Datasheet

DocID027096 Rev 2 117/137
STM32L073xx Electrical characteristics
117
I
LCD
(1)
Supply current at V
DD
= 2.2 V - 3.3 -
µA
Supply current at V
DD
= 3.0 V - 3.1 -
R
Htot
(2)
Low drive resistive network overall value 5.28 6.6 7.92 MΩ
R
L
(2)
High drive resistive network total value 192 240 288 kΩ
V
44
Segment/Common highest level voltage - - V
LCD
V
V
34
Segment/Common 3/4 level voltage - 3/4 V
LCD
-
V
V
23
Segment/Common 2/3 level voltage - 2/3 V
LCD
-
V
12
Segment/Common 1/2 level voltage - 1/2 V
LCD
-
V
13
Segment/Common 1/3 level voltage - 1/3 V
LCD
-
V
14
Segment/Common 1/4 level voltage - 1/4 V
LCD
-
V
0
Segment/Common lowest level voltage 0 - -
ΔVxx
(3)
Segment/Common level voltage error
T
A
= -40 to 85 °C
--± 50 mV
1. LCD enabled with 3 V internal step-up active, 1/8 duty, 1/4 bias, division ratio= 64, all pixels active, no LCD
connected.
2. Guaranteed by design.
3. Guaranteed by characterization results.
Table 81. LCD controller characteristics (continued)
Symbol Parameter Min Typ Max Unit
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