Datasheet

Electrical parameters STM8L151xx, STM8L152xx
98/131 DocID15962 Rev 13
9.3.9 LCD controller (STM8L152xx only)
In the following table, data is guaranteed by design. Not tested in production.
VLCD external capacitor (STM8L152xx only)
The application can achieve a stabilized LCD reference voltage by connecting an external
capacitor C
EXT
to the V
LCD
pin. C
EXT
is specified in Table 45.
Table 45. LCD characteristics
Symbol Parameter Min Typ Max. Unit
V
LCD
LCD external voltage 3.6
V
V
LCD0
LCD internal reference voltage 0 2.6
V
LCD1
LCD internal reference voltage 1 2.7
V
LCD2
LCD internal reference voltage 2 2.8
V
LCD3
LCD internal reference voltage 3 2.9
V
LCD4
LCD internal reference voltage 4 3.0
V
LCD5
LCD internal reference voltage 5 3.1
V
LCD6
LCD internal reference voltage 6 3.2
V
LCD7
LCD internal reference voltage 7 3.3
C
EXT
V
LCD
external capacitance 0.1 2 µF
I
DD
Supply current
(1)
at V
DD
= 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.
3µA
Supply current
(1)
at V
DD
= 3 V 3 µA
R
HN
(2)
2. R
HN
is the total high value resistive network.
High value resistive network (low drive) 6.6 M
R
LN
(3)
3. R
LN
is the total low value resistive network.
Low value resistive network (high drive) 360 k
V
33
Segment/Common higher level voltage V
LCDx
V
V
23
Segment/Common 2/3 level voltage 2/3V
LCDx
V
12
Segment/Common 1/2 level voltage 1/2V
LCDx
V
13
Segment/Common 1/3 level voltage 1/3V
LCDx
V
0
Segment/Common lowest level voltage 0