EM65100AGH EMC [ELAN Microelectronics Corp], EM65100AGH Datasheet - Page 34

• Manufacturer Part Number: EM65100AGH
• Description: 69 COM/ 101 SEG 4 Gray Level STN LCD Driver
• Manufacturer: EMC [ELAN Microelectronics Corp]

Select a display duty ratio for the partial display from 1/10, 1/18, 1/26, 1/34, 1/42, 1/50 and 1/58 using the DS(LCD duty
ratio) register. Set the most suitable values for LCD drive bias ratio, LCD drive voltage, electronic volume, the number of
boosting steps, and others according to the actually used LCD panel and the selected duty ratio.
7.24 Discharge circuit
The EM65100 has built-in the discharge circuit, which discharges electricity from capacitors for a stability of power
sources(V0~V4).
The discharge circuit is valid, while the DIS register is set to “1” or the RESB pin is set “L”. When the built-in power
supply is used, should be set DIS=”1” after the power source is turned off (DCON, AMPON)=(0, 0). And don’t turn on
both the built-in power source and the external power source (V0~V4, Vcc) while DIS=”1”.
7.25 Initialization
The EM65100 is initialized by setting RESB pin to “L”. Normally, RESB pin is initialized together with MPU by
connecting to the reset pin of MPU. When power ON, be sure to make RESB=”L”.
* This specification is subject to be changed without notice.
Register in electronic volume
Display Normal/Reverse
RAM access data length
Common shift direction
Gradation display mode
Display starting line
Gradation palette 0
Gradation palette 1
Gradation palette 2
Gradation palette 3
Discharge Register
Booster frequency
Display ON/OFF
n-line alternated
Increment mode
Static Pictograh
Display RAM
Power Supply
Display mode
Display duty
X Address
REF mode
Y Address
Bias ratio
ITEM
69 COM/ 101 SEG 4 Gray Level STN LCD Driver
COMO → COM67, COMA, COMB
Gradation display mode
Set at the first line(0H)
every frame unit
Increment OFF
Variable mode
(0,0,0,0,0,0,0)
Display OFF
(0, 0, 0, 0, 0)
(0, 0, 1, 0, 1)
(0, 1, 0, 1, 0)
(0, 1, 1, 1, 0)
Initial value
8-bits mode
Not fixed
00H set
00H set
1/9 bias
Normal
Normal
(0,0)
1/69
OFF
OFF
"0"
2005/3/8 (V0.6)
EM65100
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