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參數資料
| 型號： | HE84G752B |
| 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： | 20/49頁 |
| 文件大小： | 474K |
| 代理商： | HE84G752B |
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KING BILLION ELECTRONICS CO., LTD
駿
億
電
子
股
份
有
限
公
司
HE84G752B
HE80004 Series
January 21, 2005
This specification is subject to change without notice. Please contact sales person for the latest version before use.
20
V0.93
when the internal LCD power system is used by internal voltage multiplier . The input voltage is
regulated to LVREG using the internally by resistor between LGS1 and LVREG generated LVAG as
reference voltage. LVREG can be adjusted
LVREG adjustment guideline
: First, the level of VDD must be 0.3 volt higher than LVREG even at the
end of battery life for the regulator to function properly. For example, if the VDD is expected to drop to
2.2 volts when battery is low, then the level of LVREG can only be set at 1.9 volts max. Secondly, the
higher the level of LVREG, the less multiples it requires pumping LV5 to same level. For example, to
pump the 2.25 volts to 9 volts requires 4 times multiplier; to pump the 3 volts to 9 volts requires only 3
time multiplier which consumes less power. So it is advisable not to adjust the LVREG to an unnecessary
low level.
Voltage multiplication:
The LVREG is then multiplied by 3, 4, or 5 times, depending on external
capacitors configurations as shown below, to generate LV5. Please note that LV5 must be lower than 8.5
volts to prevent chip from breaking down.
LVL1
LVL2
LVL3
LVL4
LVL5
LCAP4A
LCAP2A
LCAP2A
LCAP1A
LCAP1A
LCAP3A
LCAP3A
LVAG
LVAG
LCAP2B
LCAP4A
LVL1
LVL2
LVL4
LCAP2B
LVL3
LV5
LVL5
LCAP1A
LCAP3A
LCAP2B
LCAP4A
LCAP2A
LVL1
LVL3
LVL2
LVL4
LCAP1B
LCAP1B
LCAP1B
LVAG
LGS1
LVREG
LGS1
LVREG
LVREG
LGS1
0.1uF
4.7uF
4.7uF
4.7uF
0.1uF
4.7uF
4.7uF
4.7uF
4.7uF
0.1uF
4.7uF
0.1uF
4.7uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
R2
R1
R2
0.1uF
R1
R1
R2
0.1uF
x4 multiplier
x3 multiplier
GND_LCD
GND_LCD
GND_LCD
x5 multiplier
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| HE84G761(S) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
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| HE84G762B | 制造商:KB 制造商全稱:KB 功能描述:8-BIT MICRO-CONTROLLER |
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