EM73P461 データシートの表示（PDF） - ELAN Microelectronics

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EM73P461

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

ELAN Microelectronics 

PIN DESCRIPTIONS

Symbol

Pin-type

P8.0(INT1)

I/O-S

/WAKEUPA/DIN,

P8.2(INT0)/WAKEUPC

P8.1(TRGB)

/WAKEUPB/DOUT,

P8.3(TRGA)

/WAKEUPD

I/O-S

SOUND

VA,VB, V1, V2, V3

COM0~COM3

SEG0~SEG31

TEST/VPP

EM73P461A

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

Preliminary

Function

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

releasing function

P8.0/DIN : data input for programming OTP

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

P8.1/DOUT : data output for programming OTP

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

Test pin must be floating

VPP : high vlotage (12V) power source for programming OTP

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.

12.27.2001 4

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