EM73963A Ver la hoja de datos (PDF) - ELAN Microelectronics
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EM73963A Datasheet PDF : 38 Pages
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EM73963A
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
Bank 0
Increment
Address
000h - 00Fh
010h - 01Fh
020h - 02Fh
:
:
:
Zero-page
0C0h - 0CFh
0D0h - 0DFh
0E0h - 0EFh
0F0h - 0F3h
Level 0
Level 4
Level 8
Level 12
Level 1 Level 2 Level 3
Level 5 Level 6 Level 7
Level 9 Level 10 Level 11
Bank 1
100h - 10Fh
110h - 11Fh
:
:
:
ZERO- PAGE:
160h - 16Fh
170h - 17Fh
From 000h to 00Fh is the zero-page location. It is used as the zero-page address mode pointer for the
instruction of "STD #k,y; ADD #k,y; CLR y,b; CMP k,y".
PROGRAM EXAMPLE: To wirte immediate data "07h" to RAM [03] and to clear bit 2 of RAM [0Eh].
STD #07h, 03h ; RAM[03] ← 07h
CLR 0Eh,2 ; RAM[0Eh]2 ← 0
STACK:
There are 13 - level (maximum) stack levels that user can use for subroutine (including interrupt and CALL).
User can assign any level be the starting stack by providing the level number to stack pointer (SP).
When an instruction (CALL or interrupt) is invoked, before enter the subroutine, the previous PC address is
saved into the stack. Until returned from those subroutines, the PC value is restored by the data saved in stack.
DATA AREA:
Except the area used by user's application, the whole RAM can be used as data area for storing and loading
general data.
ADDRESSING MODE
The 372 nibble data memory consists of two banks (bank 0 and bank 1). There are 244x4 bits (address
000h~0F3h) in bank 0 and 128x4 bits (address 100h~17Fh) in bank 1.
* This specification are subject to be changed without notice.
6.14.2001 6
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