EM73PA88A
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
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 :
0000h
0002h
0004h
0006h
0008h
000Ah
000Ch
000Eh
0086h
Reset start address
INT0 ; interrupt service routine entry address
SPI
TRGA
TRGB
TBI
Subroutine call entry address
designated by [LCALL a]
instruction
INT1
SCALL, subroutine call entry address
.
.
.
07FFh
0800h
0FFFh
1000h
Bank 1
Bank 2
Data table for
[LDAX],[LDAXI]
instruction
1FFFh
Bank 3
* This specification are subject to be changed without notice.
10.8.2001
6
ELAN [ ELAN MICROELECTRONICS CORP ]
