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參數(shù)資料
| 型號： | UPD16682P |
| 廠商： | NEC Corp. |
| 英文描述： | 1/65 DUTY LCD CONTROLLER/DRIVER WITH ON-CHIP RAM |
| 中文描述： | 1 / 65稅LCD控制器/驅(qū)動器，片內(nèi)RAM |
| 文件頁數(shù)： | 36/56頁 |
| 文件大小： | 435K |
| 代理商： | UPD16682P |
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Data Sheet S13368EJ3V0DS00
36
μ
PD16682
Figure 12
5. Power Save
Static indicator OFF
Static indicator ON
Power save (compound command)
Sleep mode
Static indicator ON
Reset command
Standby mode
Power save OFF
(Display all OFF command)
Cancel sleep mode
Cancel standby mode
Power save OFF
(Display all OFF command)
12.20.1 Sleep mode
During this mode, all LCD operations are stopped and there is no access from the MPU, so current consumption
can be reduced almost as low as the static current level. The internal status during sleep mode is as follows.
(1)
The oscillation circuit and LCD power supply circuit are stopped.
(2)
All LCD drive circuits are stopped and both segment and common driver outputs output at the V
SS
level.
12.20.2 Standby mode
During this mode, all duty LCD display system operations are stopped and only the static drive system for the
indicators operate, which reduces the current consumption to the minimum amount needed for static drive. The
internal status during standby mode is as follows.
(1)
The LCD’s power supply circuit is stopped. The oscillation circuit operates.
(2) The duty drive system’s LCD drive circuit is stopped and both segment and common driver outputs output at
the V
SS
level. The static drive system operates.
When a reset command is executed while in standby mode, it sets sleep mode.
Remarks 1.
If you are using an external power supply, we recommend that you stop the external power supply
circuit’s functions when activating the power save function. For example, if you are using an external
divided resistor circuit to provide LCD drive voltage at different levels, we recommend that you add a
circuit to cut the current flowing on the divided resistor circuit while the power save function is being
activated.
2.
The
μ
PD16682 includes the /DOF pin which is used to control blinking LCD displays is set to low level
when activating the power save function. The output from /DOF can be used to stop the external
power supply circuit's function.
3.
When the display has been set to OFF mode, executing the display all ON command sets power save
mode no matter which command is entered afterward.
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| UPD16682P-001 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver |
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| UPD16682P-003 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver |
| UPD16682P-004 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver |
| UPD16682W | 制造商:NEC 制造商全稱:NEC 功能描述:1/65 DUTY LCD CONTROLLER/DRIVER WITH ON-CHIP RAM |
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