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EM73PA88A 参数 Datasheet PDF下载

EM73PA88A图片预览
型号: EM73PA88A
PDF下载: 下载PDF文件 查看货源
内容描述: 4位微控制器的液晶显示器产品 [4-BIT MICRO-CONTROLLER FOR LCD PRODUCT]
分类和应用: 显示器微控制器
文件页数/大小: 45 页 / 410 K
品牌: ELAN [ ELAN MICROELECTRONICS CORP ]
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EM73PA88A  
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT  
B
:
XA2  
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -  
BANK 2  
XB1 :  
:
:
B
:
XB  
XB2 :  
:
B
:
XB2  
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -  
BANK 3  
XC1 :  
:
:
B
:
XC  
XC2 :  
:
B
XC2  
Fixed data can be read out by table-look-up instruction. Table-look-up instruction is requires the Data point  
(DP) to indicate the ROM address in obtaining the ROM code data (Except bank 0) :  
LDAX  
Acc ROM[DP]L  
LDAXI  
Acc ROM[DP]H,DP+1  
DP is a 12-bit data register that stores the program ROM address as pointer for the ROM code data.  
User has to initially load ROM address into DP with instructions "STADPL", and "STADPM, STADPH",  
then to obtain the lower nibble of ROM code data by instruction "LDAX" and higher nibble by instruction  
"LDAXI"  
PROGRAM EXAMPLE: Read out the ROM code of address 1777h by table-look-up instruction.  
LDIA #07h;  
STADPL ; [DP]L 07h  
STADPM ; [DP]M 07h  
STADPH  
:
; [DP]H 07h, Load DP=777h  
LDL #00h;  
LDH #03h;  
LDAX  
; ACC 6h  
STAMI  
LDAXI  
STAM  
; RAM[30] 6h  
; ACC 5h  
; RAM[31] 5h  
;
ORG 1777h  
DATA 56h;  
DATA RAM ( 500-nibble )  
A total 500 - nibble data RAM is available from address 000 to 1FFh  
Data RAM includes the zero page region, stacks and data areas.  
* This specification are subject to be changed without notice.  
10.8.2001  
8