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參數(shù)資料
| 型號： | SA8806AFA |
| 廠商： | SAMES |
| 英文描述： | 64 SEGMENT LIQUID CRYSTAL DISPLAY DRIVER PARALLEL INTERFACE |
| 中文描述： | 64段液晶顯示屏驅(qū)動并行接口 |
| 文件頁數(shù)： | 8/10頁 |
| 文件大?。?/td> | 238K |
| 代理商： | SA8806AFA |
SA8806A
8/10
sames
3.
LCD Character Mapping
The device has 16 address locations, A0 - A15 which correspond to VS[0] - VS[15].
Each location contains 4 bits, D[3] to D[0] which correspond to VR[3] - VR[0].
The mapping is detailed in the table below:
SEG
VS[0]
VS[1]
VS[2]
VS[3]
........
VS[12] VS[13] VS[14] VS[15]
VR[0]
0-0
1-0*
2-0
3-0
........
12-0
13-0
14-0
15-0
VR[1]
0-1
1-1
2-1
3-1
........
12-1
13-1
14-1
15-1
VR[2]
0-2
1-2
2-2
3-2
........
12-2
13-2
14-2
15-2
VR[3]
0-3
1-3
2-3
3-3
........
12-3
13-3
14-3
15-3
Note: A '1' switches the corresponding segment on.
* The address number and bit number of the byte is given, e.g. 1-0 is address 1 and
bit 0 (LSB).
On-Chip LCD Voltage Divider Disable
The integrated divider for the LCD voltages can be disabled by applying a high level
on the EN input (EN = 1).
4.
5.
Contrast Setting
The contrast may be adjusted in two ways:
An external resistor divider supplying the LCD voltage inputs VI1, VI1/3, VI2/3, with
the internal divider disabled as described in paragraph 4.
Applying an external LCD voltage on input V1, with the internal voltage divider
activated.
6.
Oscillator
The on-chip oscillator circuit requires one external capacitor for operation. The
capacitor value is calculated as follows:
C = 7μF.1Hz/f
f = Required oscillator frequency
The multiplex rate is 64 times lower than the clock frequency.
TYPICAL APPLICATION
The Application Circuit (Figure 1) shows the connections for a typical application utilising
an 8 digit (7 segment) display, plus decimal points.
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