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参数资料
| 型号： | EM73MA89B |
| 英文描述： | Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 8-EPSOIC T&R |
| 中文描述： | 4，液晶产品位微控制器 |
| 文件页数： | 62/64页 |
| 文件大小： | 331K |
| 代理商： | EM73MA89B |
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7
* This specification are subject to be changed without notice.
EM73MA89B
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
Preliminary
10.15.2002 (V1.3)
B
XA2
:
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
BANK 2
XB1 :
:
BXB
:
XB2 :
:
B
XB2
:
; - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
BANK 3
XC1 :
:
BXC
:
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
; RAM[30]
← 6h
LDAXI
; ACC
← 5h
STAM
; RAM[31]
← 5h
;
ORG
1777h
DATA
56h;
DATA RAM ( 1012-nibble )
A total 1012 - nibble data RAM is available from address 000 to 3FFh
Data RAM includes the zero page region, stacks and data areas.
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