LC75810E Ver la hoja de datos (PDF) - ON Semiconductor

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componentes Descripción

Fabricante

LC75810E

1/8 to 1/10 Duty Dot Matrix LCD Display Controllers/Drivers

ON Semiconductor 

LC75810E/T

Notes on the Power On and Power Off Sequences

The following sequences must be observed when power is turned on and off. (See Figure 3.)

• At power on: Logic block power supply (VDD) on → LCD driver block power supply (VLCD) on.

• At power off: LCD driver block power supply (VLCD) off → Logic block power supply (VDD) off.

However, if the logic and LCD driver block use a shared power supply, then the power supplies can be turned on and off at

the same time.

t1

VDD

t2

t3

VLCD

RES

Instruction execution

tWRES

VIL

VIH

Initial state settings

Display state

Display off

Display on

Display off

• t1 ≥ 0

• t2 > 0

• t3 ≥ 0 (t2 > t3)

• tWRES • • • 1μs min

“Display on/off control”

instruction execution

(Turning the display on)

“Display on/off control”

instruction execution

(Turning the display off)

Initial state setting

• Set display technique

• DCRAM data write

• ALATCH data write (If ALATCH is used)

• CGRAM data write (If CGRAM is used)

• Set AC and SC addresses

• Set display contrast (If the display contrast adjustment circuit is used)

Figure 3

No.7141-31/54

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