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EM73P968 Datasheet(PDF) 11 Page - ELAN Microelectronics Corp

Part # EM73P968
Description  4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
PDF  53 Pages
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Manufacturer  EMC [ELAN Microelectronics Corp]
Direct Link  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM73P968 Datasheet(HTML) 11 Page - ELAN Microelectronics Corp

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* This specification are subject to be changed without notice.
EM73P968
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
8.14.2001
Preliminary
P9(3..0)
instruction field
RAM address
xxxxxxxx
xxxxxxxx
00 00
instruction field
RAM address
yyyy
0000 yyyy
PROGRAM EXAMPLE: Load the data of RAM address "143h" to RAM address "023h".
OUT
#0001B,P9
LDA
43h
; Acc← RAM[143h]
OUT
#0001B,P9
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
PROGRAM EXAMPLE: Load the data of RAM address "143h" to RAM address "032h".
OUT
#0001B,P9
; RAM bank1
LDL
#3h
; LR← 3
LDH
#4h
; HR← 4
LDAM
; Acc← RAM[134h]
OUT
#0000B,P9
; RAM bank0
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.



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