HL14104 Ver la hoja de datos (PDF) - Hyundai Micro Electronics

Número de pieza

componentes Descripción

Fabricante

HL14104

LCD Driver

Hyundai Micro Electronics 

HL15604

4) Output pin states during the reset period

• SEG1/P1 to SEG4/P4

• SEG5 to SEG39

• COM1 to COM4

• KS1/SEG40, KS2/SEG41

• KS3 to KS5

• KS6

• SO

: Low *)

: Low

: Low

: Low *)

: X **)

: High

: High ***)

*) These output pins are forcibly set to the segment output function and held low.

**) When power is first applied, these output pins are undefined until the S0 and S1 control

data bits have been transferred.

***) Since this output pin is an open-drain output, a pull-up resistor of between 1 and 10§ Úis

required. This pin remains high during the reset period even if a key data read operation

is performed.

11. Power Down Mode

Sleep mode is set up by setting S0 or S1 in the control data to 1. The segment

outputs will all go low and the common outputs will also go low, and the oscillator

on the OSC pin will stop ( it will be started by a key press). This reduces power

dissipation. This mode is cleared by sending control data with both S0 and S1 set

to 0. Note that the SEG1/P1 to SEG4/P4 outputs can be used as general purpose

output ports according to the state of the P0 and P1 control data bits, even in

sleep mode.

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