ST7586S Sitronix Technology Corporation, ST7586S Datasheet - Page 61
ST7586S
Manufacturer Part Number
ST7586S
Description
4-level Gray Scale Dot Matrix Lcd Controller/driver
Manufacturer
Sitronix Technology Corporation
Datasheet
1.ST7586S.pdf
(63 pages)
- Current page: 61 of 63
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ST7586S
Selection of Liquid Crystal
Referential LCD Module Setting
VDD1=2.8V, VDD2=VDD3=VDD4=VDD5=VDDX=2.8V, Panel Size=4.0”, Booster Level=X8, N-Line=Frame Inversion
Note:
Ver-1.1b
4-Level Gray Scale
Display Mode
Monochrome
Positive Booster: (VDD2 x BL x BE)
Negative Booster: [-VDD2 x (BL – 1) x BE]
Vop requirement:
VDD2 x (BL – 1) x BE
BL is the booster level and BE is the booster efficiency.
Referential value are listed below: (assume VDD2~VDD5=2.8V and BL=X8)
Module Size = 3.0”~4.0”: BE=70% (Typical)
Actual BE should be determined by module loading and ITO resistance value.
1.6V ≦ VG < 2 x VDD2.
Recommend VG is: VDD2-VG around 0.3~0.5V.
VM=VG/2 and 0.8V ≦ VM < VDD2
The ITO resistance restriction of LCD module please refers to the table of ITO Resistance Limitation.
In different range of partial area, the Vop and BIAS setting must within the Recommended
Parameter of Liquid Crystal after consider the temperature effect and user adjustment.
≧ ≧ ≧ ≧
Duty
160
160
Vop x (N – 2) / N or Vop
80
80
Recommended Parameter of Liquid Crystal
≧ ≧ ≧ ≧
V0 or (VDD2 x BL x BE)
≦ ≦ ≦ ≦
XV0 or [VDD2 x (BL – 1) x BE]
BIAS
1/10
1/10
1/11
1/10
1/10
1/11
1/9
1/9
≦ ≦ ≦ ≦
61/63
VDD2 x (BL – 1) x BE x N / (N-2), where N is bias rate.
≧ ≧ ≧ ≧
Vop
Vop Range
12.5 ~ 13.5
12.5 ~ 14.0
11.5 ~ 13.5
11.5 ~ 13.5
11.5 ~ 14.0
11.5 ~ 14.0
9.0 ~ 12.3
9.0 ~ 14.0
≦ ≦ ≦ ≦
(Vop – VG), where VG = Vop x 2 / N
2009/12/23
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