PT6524LQ 查看數據表（PDF） - Princeton Technology

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PT6524LQ

LCD Driver IC

Princeton Technology 

PT6524

DR: BIAS DRIVE TECHNIQUR CONTROL DATA BIT

This control bit is used to select either 1/2 Bias drive or 1/3 Bias Drive Technique. Please refer to the table below.

DR

Bias Drive Technique

0

1/3

1

1/2

SC: SEGMENT ON / OFF CONTROL DATA BIT

This control bit is used to select the state of the segment driver output pins. Please refer to the table below.

SC

Display State

0

ON

1

OFF

BU: NORMAL / POWER SAVING MODE SELECT BIT

This control bit is used to select either the Normal Mode or the Power Saving Mode. Please refer to the table below.

BU

Mode

Remarks

0

Normal Mode

-

The oscillation circuit stops, the common and segment output pins are set to

1

Power Saving Mode

“LOW” level. It must be noted that the output pins - SG1/P1 to SG12/P12

may be used as General Purpose Output Ports by setting the control bits –

P0 to P3.

DISPLAY CONTROL AND THE /INH PIN

When power is initialized, the internal data of PT6524 (that is, display data – D1 to D204 and the control data) are not

defined. Irrelevant displays caused by the undefined internal data can be prevented by using the following procedures.

The /INH pin must be set to “LOW” at the same the as the power is applied to turn OFF the display. Doing this will set the

output pins – SG1/P1 to SG12/P12, SG13 to SG51 and COM1 to COM4 to “LOW” level. While the /INH pin is held at

“LOW” level, the microcontroller must send the serial data. Then the application can set the /INH pin to “HIGH”. Please

refer to the figure below.

Notes:

1. t1 = determined by the value of C and R.

2. tc = 10us (minimum)

V1.3

10

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