EM73MA89B Datasheet, PDF (31/64 Pages) ELAN Microelectronics Corp – 4-BIT MICRO-CONTROLLER FOR LCD PRODUCT

EM73MA89B
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
LCD driver control command regist^Per^r(^eP2^li7^m) : ^inary
Port27 3 2 1 0 Initial value : 0000
LDC VREF
LDC
LCD display control
VREF
0
LCD display disable
000
1
LCD display enable
001
* : Don't care.
010
*¹ : V5 is LCD working voltage
011
(suggestion only).
100
101
11*
Example :
LDIA #1001B
; enable LCD.
OUTA P27
:
LDIA #0000B
; disable LCD.
OUTA P27
LCD display data area:
Reference voltage
0.85V
0.90V
0.95V
1.00V
1.05V
Reserved
Reserved
V5(1/5bias)*¹
4.25V
4.50V
4.75V
5.00V
5.25V
Reserved
Reserved
The LCD display data is stored in the display data area of the data memory (RAM).
Bank 2 Address 0 1 2 3 4 5 6 7 8 9 A B C D E F
P9=xx10B 200-20Fh
210-21Fh
220-22Fh
230-23Fh
240-24Fh
250-25Fh
260-26Fh
270-27Fh
280-28Fh
290-29Fh
2A0-2AFh
2B0-2BFh
2C0-2CFh
2D0-2DFh
2E0-2EFh
2F0-2FFh
Bank 3
P9=xx11B 300-30Fh
310-31Fh
320-32Fh
330-33Fh
340-34Fh
350-35Fh
360-36Fh
370-37Fh
380-38Fh
390-39Fh
3A0-3AFh
3B0-3BFh
3C0-3CFh
3D0-3DFh
3E0-3EFh
3F0-3FFh
COM0
COM1
COM2
COM3
COM4
COM5
COM6
COM7
COM8
COM9
COM10
COM11
COM12
COM13
COM14
COM15
COM16
COM17
COM18
COM19
COM20
COM21
COM22
COM23
COM24
COM25
COM26
COM27
COM28
COM29
COM30
COM31
* This specification are subject to be changed without notice.
10.15.2002 (V1.3) 31