EM73P968 datasheet(6/53 Pages) EMC

6 / 53 page

* This specification are subject to be changed without notice.

8.14.2001

EM73P968

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

Preliminar

FUNCTION DESCRIPTIONS

PROGRAM ROM ( 16K X 8 bits )

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

The basic structure of the program ROM may be categorized into 5 partitions.

1. Address 0000h : Reset start address.

2. Address 0002h - 000Ch : 6 kinds of interrupt service routine entry addresses.

3. Address 000Eh - 0086h : SCALL subroutine entry address, only available at 000Eh, 0016h, 001Eh, 0026h, 002Eh,

0036h, 003Eh, 0046h, 004Eh, 0056h, 005Eh, 0066h, 006Eh, 0076h, 007Eh, 0086h.

4. Address 0000h - 07FFh : LCALL subroutine entry address.

5. Address 0000h - 1FFFh : Except used as above function, the other region can be used as user's program and

data region.

address

Bank 0 :

SCALL, subroutine call entry address

Data table for

[LDAX],[LDAXI]

instruction

Subroutine call entry address

designated by [LCALL a]

instruction

Bank 1

Bank 2

Bank 3

Reset start address

INT0 ; interrupt service routine entry address

TRGA

TRGB

TBI

INT1

0000h

0002h

0004h

0006h

0008h

000Ah

000Ch

000Eh

0086h

07FFh

0800h

0FFFh

1000h

1FFFh

HTCI / ADI

EM73P968 Datasheet(PDF) 6 Page - ELAN Microelectronics Corp

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