APU428 View Datasheet(PDF) - APLUS INTEGRATED CIRCUITS

Part Name

Description

Manufacturer

APU428

4-Bit Micro-controller With LCD Driver

APLUS INTEGRATED CIRCUITS 

APU428

An example of ADC timing is shown below:

TCK4

IR

SW (LBR/AN4)

SW (AN4/DAC)

SAD 1Bh

LBR

DAC

SAD 28h

LBR

DAC

En LBR

SAD 11h

AN4

DAC

SAD 20h

AN4

DAC

En DAC

LHCP

T1h

ENCP

Note: Power Supply = 1.2V Ÿ T1h needs 5ms

Power Supply = 2.4V Ÿ T1h needs 10Ps

EL-light

Sets ELC and ELP clock and duty cycle using ELC X instruction, then turn on and off ELC and ELP output by

SF X and RF X instruction. With external transistor, diode, inductor and resistor, we can pump the EL panel to

AC 100~250V.

L1

D1

R1

ELP

Q1

R2

ELC

Q2

EL-plane

LIT

ELP

ELC

When the EL-light is turned on, the ELC will turn on before ELP, but when the EL-light is off, the ELP and ELC

will turn off after the next falling edge of ELC in order to make sure no voltage is left on the EL plane.

Timer

The 6-bit programmable timer can select PH3/PH9/PH15/FREQ (Timer 2 can also select PH5/PH7/PH11/

PH13 by TM2X instruction) as the clock source. When it underflows, HALT release signals are generated.

Preliminary

11

Ver. 0.0

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