LC75817NW View Datasheet(PDF) - SANYO -> Panasonic

Part Name

Description

Manufacturer

LC75817NW

1/8 to 1/10 Duty Dot Matrix LCD Display Controllers/Drivers with Key Input Function

SANYO -> Panasonic 

LC75817NE, 75817NW

• Explanation

In this technique, the controller uses interrupts to determine key on/off states and read the key data. The controller

must check the DO state when CE is low. If DO is low, the controller recognizes that a key has been pressed and

executes the key data read operation. After that the next key on/off determination is performed after the time t10 has

elapsed by checking the DO state when CE is low and reading the key data. The period t10 in this technique must

satisfy the following condition.

t10 > t6

If a key data read operation is executed when DO is high, the read key data (KD1 to KD30) and sleep acknowledge

data (SA) will be invalid.

No. 6144-41/43

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