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參數(shù)資料
| 型號(hào)： | LC75808 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | 1/8 to 1/10 Duty LCD Display Drivers with Key Input Function |
| 中文描述： | 1月8日至1月10日當(dāng)值液晶顯示驅(qū)動(dòng)器與關(guān)鍵輸入功能 |
| 文件頁數(shù)： | 28/39頁 |
| 文件大?。?/td> | 981K |
| 代理商： | LC75808 |
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No. 6370 -28/39
LC75808E, 75808W
Voltage Detection Type Reset Circuit (VDET)
This circuit generates an output signal and resets the system when logic block power is first applied and when the voltage
drops, i.e., when the logic block power supply voltage is less than or equal to the power down detection voltage VDET,
which is 3.0V, typical. To assure that this function operates reliably, a capacitor must be added to the logic block power
supply line so that the logic block power supply voltage V
DD
rise time when the logic block power is first applied and the
logic block power supply voltage V
DD
fall time when the voltage drops are both at least 1 ms. (See Figure 3, 4, and 5.)
Power Supply Sequence
The following sequences must be observed when power is turned on and off. (See Figure 3, 4, and 5.)
Power on :Logic block power supply(V
DD
) on
→
LCD driver block power supply(V
LCD
) on
Power off:LCD driver block power supply(V
LCD
) off
→
Logic block power supply(V
DD
) off
However, if the logic and LCD driver blocks use a shared power supply, then the power supplies can be turned on and off
at the same time.
System Reset
1. Reset Function
The LC75808E/W performs a system reset with the VDET. When a system reset is applied, the display is turned off, key
scanning is disabled, the key data is reset, and the general-purpose output ports are set to and held at the low level (V
SS
).
These states that are created as a result of the system reset can be cleared by executing the instruction described below.
(See figure 3, 4, and 5.)
Clearing the display off state
Transferring all the serial data (the display data and the control data) creates a state in which the display is turned on.
Clearing the key scan disabled and key data reset states
Transferring the control data not only creates a state in which key scanning can be performed, but also clears the key
data reset.
Clearing the general-purpose output ports locked at the low level (V
SS
) state
Transferring the control data clears the general-purpose output ports locked at the low level (V
SS
) state and sets the
states of the general-purpose output ports.
1/8 duty
t1
≥
1 ms (Logic block power supply voltage V
DD
rise time)
t2
≥
0
t3
≥
0
t4
≥
1 ms (Logic block power supply voltage V
DD
fall time)
Internal data (KC1 to KC6, PC1 to
PC4, CT0 to CT3, CTC,
SC, SP, DT1, DT2)
Internal data (D1 to D120)
Internal data (D121 to D240)
Internal data (D241 to D360)
Internal data (D361 to D480)
Key scan
General-purpose output ports
Display state
Undefined
Defined
Figure 3
CE
V
LCD
V
DD
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Disabled
Fixed at the low level (V
SS
)
Display off
Execution enabled
Can be set to either the high (V
DD
) or low (V
SS
) level.
Display on
Defined
Defined
Defined
Defined
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LC75808W | 1/8 to 1/10 Duty LCD Display Drivers with Key Input Function |
| LC75808E | 1/8 to 1/10 Duty LCD Display Drivers with Key Input Function |
| LC75811E | 1/8 to 1/10 Duty Dot Matrix LCD Display Controller/Driver |
| LC75814V | 1/4 Duty General-Purpose LCD Driver |
| LC75816E | 1/8 to 1/10 Duty Dot Matrix LCD Display Controllers/Drivers with Key Input Function |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LC75808E | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:1/8 to 1/10 Duty LCD Display Drivers with Key Input Function |
| LC75808W | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:1/8 to 1/10 Duty LCD Display Drivers with Key Input Function |
| LC75808W-E | 功能描述:LCD 驅(qū)動(dòng)器 LCD DISPLAY DRIVER RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| LC75808WS-E | 功能描述:LCD 驅(qū)動(dòng)器 RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| LC75808W-SH-E | 功能描述:LCD 驅(qū)動(dòng)器 RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
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