4

* This specification are subject to be changed without notice.

8.11.2000

EM73C63

4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

Preliminary

User'sprogramandfixeddataarestoredintheprogramROM.User'sprogramisexecutedusingthePCvaluetofetchan

instructioncode.

The32Kx8bitsprogramROMcanbedividedinto8banks.Thereare4Kx8bitsperbank.

The program ROM bank is selected by P3(2..0). The program counter is a 13-bit binary counter. The PC

and P3 are initialized to "0" during reset.

When P3(2..0)=000B, the bank0 and bank1 of program ROM will be selected. P3(2..0)=001B, the bank0 and

bank2 will be selected, and so on.

Address

P3=x000B P3=x001B

P3=x010B

P3=X011B

P3=X100B P3=X101B P3=X110B

0000h

:

:

Bank0

Bank0

Bank0

Bank0

Bank0

Bank0

Bank0

0FFFh

1000h

:

:

Bank1

Bank2

Bank3

Bank4

Bank5

Bank6

Bank7

1FFFh

PROGRAM EXAMPLE:

BANK 0

START:

:

:

:

LDIA

#00H

; set program ROM to bank1

OUTA P3

B

XA1

:

XA :

:

:

LDIA

#01H

; set program ROM to bank2

OUTA P3

B

XB1

:

XB :

:

:

LDIA

#02H

; set program ROM to bank3

OUTA P3

B

XC1

:

XC :

:

:

BXD

XD :

:

:

:

; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

BANK 1

XA1 :

:

:

BXA

:

XA2 :

: