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參數(shù)資料
| 型號： | HE84G770B |
| 廠商： | King Billion Electronics Co., Ltd. |
| 英文描述： | 8-BIT MICRO-CONTROLLER |
| 中文描述： | 8位微控制器 |
| 文件頁數(shù)： | 30/61頁 |
| 文件大小： | 817K |
| 代理商： | HE84G770B |
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King Billion Electronics Co., Ltd
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電
子
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公
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HE84G770
HE80004H SERIES
October 31, 2003
This specification is subject to change without notice. Please contact sales person for the latest version before use.
30
Version:V1.1
MO_TC
00
01
10
11
Temp. Coef.
-0.0 %/
°
C
-0.16 %/
°
C
-0.22 %/
°
C
-0.33 %/
°
C
Heavy LCD load:
The bias voltages LVL1 ~ LVL5 for LCD driver are generated from internal bias
network and buffered with active drive to provide greater bias driving strength. Usually larger LCD panel
needs more power to drive. Four driving capabilities, which can be selected by mask option, are provided
to suit the needs of application. Please note that high driving capability will cause the power consumption
to be increased.
MO_LOAD Driving Current
00
01
10
Medium high
11
Low
Medium
High
External LCD power supply
: If the maximal driving option is still inadequate for applications, user may
choose to use the external LCD power supply. In that case, there are still several options:
First, use the internal regulator and charge pump circuit to generate the high voltage, but use external bias
network to generate and supply the bias voltage level LVL1 ~ LVL5. In this case, the buffered active
drive for internal bias needs to be turned off to avoid confliction with external bias circuit and DC current
drain.
The second option is to turn off internal charge pump circuit, and use external DC-to-DC circuit to
generate high voltage and use internal bias network and buffer active drive to generate bias voltages.
The third option is to turn off internal regulator, charge pump circuit, and bias buffer circuit and use
external circuit to generate the high voltage and bias voltage. The individual circuit can be turned on or
off by the appropriate bit in LCDC and LCDPS registers and MO_PUMPE mask option.
Configuration
MO_PUMPE
BUFE
Internal
Charge pump
8
8
9
9
Internal
Bias Buffer
8
9
8
9
External charge-pump/External bias circuit
External charge-pump/Internal bias circuit
Internal charge-pump/ External bias circuit
Internal charge-pump/Internal bias circuit
Address NAME
0FH
LCDC
-
24H
LCDPS
-
0
0
1
1
0
1
0
1
Field
Reserved
Mode
W
R/W
RESET
--1x xx10
---- -100
-
-
CLR_GP
-
BLANK
PAcc
LCDE
BUFE
-
-
POWDN
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