3

* This specification are subject to be changed without notice.

EM73880

EM73880

EM73880

EM73880

EM73880

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

11.30.2001

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

P4.1/TRGH

I/O-Q

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

P4(2,3)

I/O-Q

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

P8.0/WAKEUPA,

I/O-S

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

P8.2/INT0/WAKEUPC

P8.2 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

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

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

P8.3(TRGA)/WAKEUPD

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

BZ1, BZ2

Speech output pin

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

Tie Vss as package type, no connecting as COB type

PIN DESCRIPTIONS

PIN DESCRIPTIONS

PIN DESCRIPTIONS

PIN DESCRIPTIONS

PIN DESCRIPTIONS

FUNCTION DESCRIPTIONS

FUNCTION DESCRIPTIONS

FUNCTION DESCRIPTIONS

FUNCTION DESCRIPTIONS

FUNCTION DESCRIPTIONS

PROGRAM ROM (8K X 8 bits)

PROGRAM ROM (8K X 8 bits)

PROGRAM ROM (8K X 8 bits)

PROGRAM ROM (8K X 8 bits)

PROGRAM ROM (8K X 8 bits)

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

The basic structure of program ROM can be divided into 6 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 - 1FFFh : Except used as above function, the other region can be used as user's program region.

6. Address 1000h - 1FFFh : Fixed data stortage area.