ST7541 datasheet(13/78 Pages) SITRONIX

13 / 78 page

ST7541

Ver 1.9

13/78

2007/9/3

LCD DRIVER OUTPUTS

Name

Type

Description

SEG0

SEG127

LCD segment driver outputs.

The display data and frame signal control the output voltage of segment driver.

Segment driver output voltage

Display Data

Frame

Normal display

Reverse display

VSS

Display OFF, Power Saving

VSS

COM0

COM127

LCD common driver outputs.

The scan signal and frame signal control the output voltage of common driver.

Scan Data

Frame

Common driver output voltage

VSS

Display OFF, Power Saving

VSS

COMS

(COMS1,2)

Common output for the icons.

The output signals of two pins are same. When not used, these pins should be left open.

Recommend ITO Resistance

PIN Name

ITO Resistance

PS[2:0], REF, OCS1, INTRS, TA, TB

No Limitation

T[9:0], VR, VEXT

Floating

Vdd, Vdd2, Vss, Vss2 , VOUT_IN , VOUT_OUT

<100Ω

SDA (SDA_IN & SDA_OUT)

<300Ω

CSB , E , R/W , A0 , DB[7:0]

<1KΩ

V0, V1 , V2 , V3 , V4

<500Ω

RST

<10KΩ

Note:

If using IIC interface mode, the resistance of SDA signal should be lower than 300Ω (if the system pull up resistor is

4.7KΩ).

The option setting to be “H” should connect to VDD.

The option setting to be “L” should connect to VSS.

ST7541 Datasheet(PDF) 13 Page - Sitronix Technology Co., Ltd.

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