ST7637 datasheet(209/210 Pages) SITRONIX

Part #	ST7637

Description	65K 132x132 Color Dot Matrix LCD Controller/Driver

PDF	210 Pages

Scroll/Zoom	100%

Manufacturer	SITRONIX [Sitronix Technology Co., Ltd.]

Direct Link	http://www.sitronix.com.tw

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209 / 210 page

ST7637

Ver 1.6

209/210

2009/03

A6- selection of application voltage

Vop requirement: [Vdda x BS x BE] ≧ Vop

BS is Vop booster stage and BE is booster efficiency. Referential values are listed

below: (assume Vdda=2.8V, Vop booster stage=x8)

n-line setting=0x00: BE=77%

n-line setting=0x01: BE=66%

n-line setting=0x06: BE=74%

actual BE should be determined by adding module loading and ITO resistance value.

Vdda<3V:

3V≦Vg≦2xVdda, Vdda≧3V: 1.8V≦Vg≦2xVdda.

Vm=Vg/2 and 0.7V<Vm<Vdda-0.7V.

The worst condition should be considered:

Low temperature effect and display on with gray pattern on panel.

Referential LCD module setting

Condition:Vdda=2.8V, Vop booster stage=x8, booster level=level 2, duty=1/132, panel

size=1.5”

bias

Vop (n-line=0x00)

Vop (n-line=0x01)

Vop (n-line=0x06)

1/10

15V~17.24V

14.78V

15V~16.57V

1/9

13.5V~17.24V

13.5V~14.78V

13.5V~16.57V

Note:it is recommended to reserve some range for user adjustment and temperature effect.

ST7637 Datasheet(PDF) 209 Page - Sitronix Technology Co., Ltd.