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EM73C63 Fiches technique(PDF) 7 Page - ELAN Microelectronics Corp

No de pièce EM73C63
Description  4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
PDF  40 Pages
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Fabricant  EMC [ELAN Microelectronics Corp]
Site Internet  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM73C63 Fiches technique(HTML) 7 Page - ELAN Microelectronics Corp

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* This specification are subject to be changed without notice.
EM73C63
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
Preliminary
8.11.2000
P9.3
instruction field
RAM address
xxxx xxxx
xxxx xxxx
0
instruction field
RAM address
yyyy
0000 yyyy
PROGRAM EXAMPLE: Load the data of RAM address "143h" to RAM address "023h".
SEP P9,3 ; P9.3
← 1
LDA 43h
; Acc
← RAM[143h]
CLP P9,3 ; P9.3
← 0
STA 23h
; RAM[023h]
← Acc
(3) Zero-page addressing mode:
The zero-page is in the bank 0 (address 000h~00Fh). The address is the lower 4 bits code of the second byte
in the instruction field.
PROGRAM EXAMPLE: Write immediate "0Fh" to RAM address "005h".
STD #0Fh, 05h ; RAM[05h]
← 0Fh
The bank is selected by P9.3. When P9.3 is cleared to "0", the bank 0 is selected. When P9.3 is set to "1", the bank
1 is selected.
The Data Memory consists of three Address mode, namely -
(1) Indirect addressing mode:
The address in the bank is specified by the HL registers.
PROGRAM EXAMPLE: Load the data of RAM address "143h" to RAM address "032h".
SEP P9,3 ; P9.3
← 1
LDL #3h
; LR
← 3
LDH #4h
; HR
← 4
LDAM
; Acc
← RAM[134h]
CLP P9,3 ; P9.3
← 0
LDL #2h
; LR
← 2
LDH #3h
; HR
← 3
STAM
; RAM[023h]
← Acc
(2) Direct addressing mode:
The address in the bank is directly specified by 8 bits code of the second byte in the instruction field.
P9.3
HR
LR
RAM address



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