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STM32L100X6 Datasheet(PDF) 91 Page - STMicroelectronics

Part # STM32L100X6
Description  Ultra-low-power 32-bit MCU ARM®-based Cortex®-M3, 128KB Flash, 16KB SRAM, 2KB EEPROM, LCD, USB, ADC, DAC
PDF  103 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32L100X6 Datasheet(HTML) 91 Page - STMicroelectronics

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STM32L100x6/8/B-A
Electrical characteristics
91
6.3.20
LCD controller
The STM32L100x6/8/B-A devices embed a built-in step-up converter to provide a constant
LCD reference voltage independently from the VDD voltage. An external capacitor Cext must
be connected to the VLCD pin to decouple this converter.
Table 61. LCD controller characteristics
Symbol
Parameter
Min
Typ
Max
Unit
VLCD
LCD external voltage
-
-
3.6
V
VLCD0
LCD internal reference voltage 0
-
2.6
-
VLCD1
LCD internal reference voltage 1
-
2.73
-
VLCD2
LCD internal reference voltage 2
-
2.86
-
VLCD3
LCD internal reference voltage 3
-
2.98
-
VLCD4
LCD internal reference voltage 4
-
3.12
-
VLCD5
LCD internal reference voltage 5
-
3.26
-
VLCD6
LCD internal reference voltage 6
-
3.4
-
VLCD7
LCD internal reference voltage 7
-
3.55
-
Cext
VLCD external capacitance
0.1
-
2
µF
ILCD(1)
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
Supply current at VDD = 2.2 V
-
3.3
-
µA
Supply current at VDD = 3.0 V
-
3.1
-
RHtot(2)
2. Guaranteed by characterization results.
Low drive resistive network overall value
5.28
6.6
7.92
M
Ω
RL(2)
High drive resistive network total value
192
240
288
k
Ω
V44
Segment/Common highest level voltage
-
-
VLCD
V
V34
Segment/Common 3/4 level voltage
-
3/4 VLCD
-
V
V23
Segment/Common 2/3 level voltage
-
2/3 VLCD
-
V12
Segment/Common 1/2 level voltage
-
1/2 VLCD
-
V13
Segment/Common 1/3 level voltage
-
1/3 VLCD
-
V14
Segment/Common 1/4 level voltage
-
1/4 VLCD
-
V0
Segment/Common lowest level voltage
0
-
-
ΔVxx(2)
Segment/Common level voltage error
TA = -40 to 85 ° C
--
± 50
mV



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