4

* This specification are subject to be changed without notice.

EM73P461A

EM73P461A

EM73P461A

EM73P461A

EM73P461A

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

12.27.2001

Preliminary

Preliminary

Preliminary

Preliminary

Preliminary

Symbol

Symbol

Symbol

Symbol

Symbol

Pin-type

Pin-type

Pin-type

Pin-type

Pin-type

Function

Function

Function

Function

Function

P8.0(INT1)

I/O-S

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

/WAKEUPA/DIN,

releasing function

P8.2(INT0)/WAKEUPC

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

P8.1(TRGB)

I/O-S

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

/WAKEUPB/DOUT,

releasing function

P8.3(TRGA)

P8.1/DOUT : data output for programming OTP

/WAKEUPD

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

SOUND

Melody output

VA,VB, V1, V2, V3

Connect the capacitors for LCD bias voltage

COM0~COM3

LCD common output pins

SEG0~SEG31

LCD segment output pins

TEST/VPP

Test pin must be floating

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

PIN DESCRIPTIONS

PIN DESCRIPTIONS

PIN DESCRIPTIONS

PIN DESCRIPTIONS

PIN DESCRIPTIONS

FUNCTION DESCRIPTIONS

FUNCTION DESCRIPTIONS

FUNCTION DESCRIPTIONS

FUNCTION DESCRIPTIONS

FUNCTION DESCRIPTIONS

PROGRAM ROM (4K X 8 bits)

PROGRAM ROM (4K X 8 bits)

PROGRAM ROM (4K X 8 bits)

PROGRAM ROM (4K X 8 bits)

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.