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LC75852W

Asynchronous Silicon Gate 1/2 Duty LCD Driver with On-Chip Key Input Function

SANYO -> Panasonic 

LC75852E, 75852W

1/2 Duty - 1/2 Bias LCD Drive Scheme

COM1

COM2

S1 to S45 outputs for segments on

COM1 side being lit

S1 to S45 outputs for segments on

COM2 side being lit

S1 to S45 outputs for segments on

COM1,COM2 sides being lit

S1 to S45 outputs for segments on

COM1,COM2 sides not being lit

RES and the Display Controller

Since the LSI internal data (D1 to D90 and the control data) is undefined when power is first applied, the output pins

S1/P1 to S4/P4, S5 to S43, COM1, COM2, KS1/S44 and KS2/S45 should be held low by setting the RES pin low at the

same time as power is applied. Then, meaningless displays at power on can be prevented by transferring data from the

controller and setting RES high when that transfer has completed.

Figure 2

No. 4828-11/16

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