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No. 7159--21/26

LC75813E, 75813T

Notes on Controller Transfer of Display Data

Since the LC75813E and LC75813T accept the display data (D1 to D261) divided into three separate transfer operations

when using 1/3 duty drive scheme and the data (D1 to D344) divided into four separate transfer operations when 1/4

duty drive, we recommend that applications transfer all of the display data within a period of less than 30 ms to prevent

observable degradation of display quality.

Figure 4

t1

Display and control data transfer

VDD

t2

D1 to D88

P0 to P3Internal data

DR, DT, FC, SC, BU

Internal data (D89 to D176)

Internal data (D177 to D260)

VLCD

CE

INH

Undefined

Undefined

Defined

Undefined

Undefined

Defined

Undefined

Undefined

Defined

Undefined

Undefined

Defined

VIL

tc

VIL

t3

Internal data (D261 to D344)

Notes:

t1 ≥ 0

t2 > 0

t3 ≥ 0 (t2 > t3)

tc .......10µs min.

2. 1/4 duty

1 2 ... 16 17 18 19 20 21 22 23 24 25 26

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