EM73469A View Datasheet(PDF) - ELAN Microelectronics

Part Name

Description

Manufacturer

EM73469A

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

ELAN Microelectronics 

PIN DESCRIPTIONS

Symbol

Pin-type

P4.1/TRGH

I/O-Q

P4(2,3)

I/O-Q

P8.0(INT1)/WAKEUPA, I/O-S

P8.2(INT0)/WAKEUPC

P8.1(TRGB)/WAKEUPB I/O-S

P8.3(TRGA)/WAKEUPD

SOUND

VA,VB, V1, V2, V3

COM0~COM3

SEG0~SEG31

TEST

EM73469A

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

Preliminary

Function

SOUND disable, low current push-pull

SOUND disable, normal current push-pull

SOUND disable, high current push-pull

1-bit bidirection I/O port with HTC external input

mask option :

NMOS open-drain

PMOS open-drain

low current push-pull

normal current push-pull

high current push-pull

2-bit bidirection I/O port with high current source

mask option :

NMOS open-drain

PMOS open-drain

low current push-pull

normal current push-pull

high current push-pull

2-bit bidirection I/O port with external interrupt source input and IDLE

releasing function

mask option :

wakeup enable, low current push-pull

wakeup enable, normal current push-pull

wakeup disable, open-drain

wakeup disable, low current push-pull

wakeup disable, normal current push-pull

2-bit bidirection I/O port with time/counter A,B external input and IDLE

releasing function

mask option :

wakeup enable, low current push-pull

wakeup enable, normal current push-pull

wakeup disable, open-drain

wakeup disable, low current push-pull

wakeup disable, normal current push-pull

Melody output

Connect the capacitors for LCD bias voltage

LCD common output pins

LCD segment output pins

Tie Vss as package type, no connecting as COB type.

FUNCTION DESCRIPTIONS

PROGRAM ROM (4K X 8 bits)

4 K x 8 bits program ROM contains user's program and some fixed data.

The basic structure of program ROM can be divided into 5 parts.

1. Address 000h: Reset start address.

2. Address 002h - 00Ch : 6 kinds of interrupt service routine entry addresses.

3. Address 00Eh-086h : SCALL subroutine entry address, only available at 00Eh,016h,01Eh,026h, 02Eh,

036h, 03Eh, 046h, 04Eh, 056h, 05Eh, 066h, 06Eh, 076h, 07Eh, 086h.

4. Address 000h - 7FFh : LCALL subroutine entry address.

5. Address 000h - FFFh : Except used as above function, the other region can be used as user's program region.

* This specification are subject to be changed without notice.

1.9.2001 3

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