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| 型號： | HE84760B |
| 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)： | 20/51頁 |
| 文件大?。?/td> | 487K |
| 代理商： | HE84760B |
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KING BILLION ELECTRONICS CO., LTD
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HE84760B
HE80004 Series
June 29, 2005
This specification is subject to change without notice. Please contact sales person for the latest version before use.
20
V1.0
1
10
Internal voltage multiplier is disabled, but the
Bias voltage generating circuit is enabled.
The single external power is applied to LV5,
and internal bias circuit will generate the
LV4~LV1 voltages.
1
11
Internal voltage multiplier and Bias voltage
generating circuit are disabled, and the
external power sources are applied to
LV5~LV1.
0
00
The lcd power system is disable,but the LV5~
LV1 is applied to VDD .
0
01
The lcd power system is disable,but the LV5
is applied to VDD and LV4~LV1 is applied to
hight impedance.
0
10
The lcd power system is disable, LV5 is
applied to hight impedance,and the LV4~LV1
Applied to LV5.
0
11
The lcd power system is disable, LV5~LV1 is
applied to hight impedance.
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.
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| HE84761(S) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| HE84762(S) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| HE84770 | 制造商:KB 制造商全稱:KB 功能描述:8-bit Micro-controller |
| HE84770(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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