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STM32L053C6 Datasheet(PDF) 112 Page - STMicroelectronics

Part # STM32L053C6
Description  Ultra-low-power 32-bit MCU Arm®-based Cortex®-M0, up to 64KB Flash, 8KB SRAM, 2KB EEPROM, LCD, USB, ADC, DAC
PDF  136 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32L053C6 Datasheet(HTML) 112 Page - STMicroelectronics

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Electrical characteristics
STM32L053x6 STM32L053x8
112/136
DS10152 Rev 9
6.3.21
LCD controller
The 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 78. USB: full speed electrical characteristics
Driver characteristics(1)
1. Guaranteed by design.
Symbol
Parameter
Conditions
Min
Max
Unit
tr
Rise time(2)
2. Measured from 10% to 90% of the data signal. For more detailed informations, please refer to USB
Specification - Chapter 7 (version 2.0).
CL = 50 pF
420
ns
tf
Fall Time(2)
CL = 50 pF
4
20
ns
trfm
Rise/ fall time matching
tr/tf
90
110
%
VCRS
Output signal crossover voltage
1.3
2.0
V
Table 79. 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)
Supply current at VDD = 2.2 V
-
3.3
-
µA
Supply current at VDD = 3.0 V
-
3.1
-
RHtot(2)
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



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