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EM73880 Datasheet(PDF) 25 Page - ELAN Microelectronics Corp

Part # EM73880
Description  4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
PDF  40 Pages
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Manufacturer  EMC [ELAN Microelectronics Corp]
Direct Link  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM73880 Datasheet(HTML) 25 Page - ELAN Microelectronics Corp

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* This specification are subject to be changed without notice.
EM73880
EM73880
EM73880
EM73880
EM73880
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
11.30.2001
Preliminary
Preliminary
Preliminary
Preliminary
Preliminary
RAM
COM3
COM2
COM1
COM0
address
bit3
bit2
bit1
bit0
SEG0
20H
SEG1
21H
SEG2
22H
::
::
SEG30
3EH
SEG31
3FH
The relation between LCD display data and driving method
Driving method
bit3
bit2
bit1
bit0
1/4 duty
COM3
COM2
COM1
COM0
1/3 duty
-
COM2
COM1
COM0
1/2 duty
-
-
COM1
COM0
Static
-
-
-
COM0
LCD frame frequency : According to the drive method to set the frame frequency.
Duty
Frame frequency (Hz)
1/4 duty
64 x (4/4) = 64
1/3 duty
64 x (4/3) = 85
1/2 duty
64 x (4/2) = 128
Static
64
PROGRAM EXAMPLE :
LDIA
#0001B
; 1/4 duty, 1/2 bias
OUTA
P27
LDIA
#1001B
; enable LCD
OUTA
P27
The LCD display data is stored in the display data area of the data memory (RAM).
The display data area begins with address 20H during reset. The LCD display data area ia as below :



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