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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： | 56/64页 |
| 文件大小： | 331K |
| 代理商： | EM73MA89B |
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* This specification are subject to be changed without notice.
10.15.2002 (V1.3)
EM73MA89B
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
Preliminary
User's program and fixed data are stored in the program ROM. User's program is executed using the PC value
to fetch an instruction code.
The 16Kx8 bits program ROM can be divided into 4 banks. There are 4Kx8 bits per bank.
The program ROM bank is selected by P3(1..0). The program counter is a 13-bit binary counter. The PC and
P3 are initialized to "0" during reset.
When P3(1..0)=00B or 11B, the bank0 and bank1 of program ROM will be selected. P3(1..0)=01B, the bank0
and bank2 will be selected. P3(1..0)=10B, the bank0 and bank3 will be selected.
P3=xx00B
Address
P3=xx11B
P3=xx01B
P3=xx10B
0000h
:
Bank0
0FFFh
1000h
:
Bank1
Bank2
Bank3
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 :
:
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BANK
1
XA1 :
:
BXA
:
XA2 :
:
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