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STM8L052R8 Datasheet(PDF) 94 Page - STMicroelectronics

Part # STM8L052R8
Description  Value Line, 8-bit ultralow power MCU, 64-KB Flash,256-byte data EEPROM, RTC, LCD, timers, USART, I2C, SPI, ADC
PDF  109 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM8L052R8 Datasheet(HTML) 94 Page - STMicroelectronics

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Electrical parameters
STM8L052R8
94/109
Doc ID023337 Rev 2
8.3.9
LCD controller
In the following table, data are guaranteed by Design, not tested in production.
VLCD external capacitor
The application can achieve a stabilized LCD reference voltage by connecting an external
capacitor CEXT to the VLCD pin. CEXT is specified in Table 42.
Table 42.
LCD 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
2.7
VLCD2
LCD internal reference voltage 2
2.8
VLCD3
LCD internal reference voltage 3
3.0
VLCD4
LCD internal reference voltage 4
3.1
VLCD5
LCD internal reference voltage 5
3.2
VLCD6
LCD internal reference voltage 6
3.4
VLCD7
LCD internal reference voltage 7
3.5
CEXT
VLCD external capacitance
0.1
1
2
µF
IDD
Supply current(1) at VDD = 1.8 V
1.
LCD enabled with 3 V internal booster (LCD_CR1 = 0x08), 1/4 duty, 1/3 bias, division ratio= 64, all pixels
active, no LCD connected.
3
µA
Supply current(1) at VDD = 3 V
3
RHN
(2)
2.
RHN is the total high value resistive network.
High value resistive network (low drive)
6.6
M
Ω
RLN
(3)
3.
RLN is the total low value resistive network.
Low value resistive network (high drive)
240
k
Ω
V33
Segment/Common higher level voltage
VLCDx
V
V34
Segment/Common 3/4 level voltage
3/4VLCDx
V23
Segment/Common 2/3 level voltage
2/3VLCDx
V12
Segment/Common 1/2 level voltage
1/2VLCDx
V13
Segment/Common 1/3 level voltage
1/3VLCDx
V14
Segment/Common 1/4 level voltage
1/4VLCDx
V0
Segment/Common lowest level voltage
0



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