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參數(shù)資料
| 型號： | EM83040B |
| 廠商： | ELAN Microelctronics Corp . |
| 英文描述： | LCD CONTROLLER |
| 中文描述： | LCD控制器 |
| 文件頁數(shù)： | 11/22頁 |
| 文件大小： | 419K |
| 代理商： | EM83040B |
11
* This specification are subject to be changed without notice.
9.14.2001
EM83040B
LCD CONTROLLER
Preliminary
Address 2560 bit3 (IRS) is internal resistor selected
IRS=0: internal regulator resistor is used.
IRS=1: internal regulator resistor is not used. (External resistor is used)
Address 2560 bit0~2(IR2, IR1, IR0) is selected for the V1 voltage regulator internal resistance ratio
IR2~IR0
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
The V1 voltage can be calculated using equation A over the range where VDD < V1
≤
VOUT
Resistor ratio (1+Rb/Ra)
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
V1=(1+Rb/Ra)
V
*(94%~97%) (Equation A)
(94%~97%) depend on loading
Example: Default: IRS=0 (internal regulator resistor is used), (IR2, IR1, IR0)=(0, 1, 0), and (REG5~0)=(000000)
V1=(1+Rb/Ra)
V
EV
*(94%~97%)=4.0
1.2*(94%~97%)= 4.51 V~4.65V
When IRS=0 (internal regulator resistor is used), (IR2, IR1, IR0)=(0, 1, 1), and (REG5~0)=(100000)
V1=(1+Rb/Ra)
V
EV
*(94%~97%)=4.5
1.584*(94%~97%)= 6.7~6.91 V
FIG. 8 show the V1 voltage measured by values of the internal resistance ratio resistor (1+Rb/Ra) for V1 voltage
adjustment and electric volume resister (REG5~REG0).
FIG. 8 The output voltage V1 is determined by function of the V1 voltage regulator ratio register (1+Rb/Ra), and
the electric volume resister (REG5~REG0).
(8) The step-up voltage circuit
Case of the double step-up, the triple step-up and Case of the quad step-up VOUT is output voltage pin the bias
voltage V1 is supported from VREG.
(a) Double step-up, (b) Triple step-up, (c) Quad step-up (d) five times step-up C1=0.47 to 1.0￡gf, C2=1.0 to
4.7uf
(a) VOUT=2*VDD (b) VOUT=3*VDD
(c) VOUT=4*VDD
FIG. 9
(d) VOUT=5*VDD
E
VOUT
VSS4
VSS3
CB
CA
VSS2+
VSS2-
VREG
V1
V2
V3
V4
V5
C2
C2
C1
C2
C2
C2
C1
E
VOUT
VSS4
VSS3
CB
CA
VSS2+
VSS2-
VREG
V1
V2
V3
V4
V5
C2
C2
C2
C2
C1
E
VOUT
VSS4
VSS3
CB
CA
VSS2+
VSS2-
VREG
V1
V2
V3
V4
V5
C2
C2
C2
C2
C1
E
VOUT
VSS4
VSS3
CB
CA
VSS2+
VSS2-
VREG
V1
V2
V3
V4
V5
C2
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