參數(shù)資料
型號： HCD66727A03BP
廠商： Hitachi,Ltd.
英文描述： Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function
中文描述： 低功耗點陣液晶顯示控制器/鍵掃描功能驅(qū)動程序
文件頁數(shù)： 33/97頁
文件大?。?/td> 513K
代理商： HCD66727A03BP
HD66727
33
Power Control
The power control instruction (Figure 13) includes the AMP, SLP, and STB bits.
AMP:
When AMP = 1, each voltage follower for V1 to V5 pins and the booster are turned on. When AMP
= 0, current consumption can be reduced while character or segment display controlled by the multiplexing
drive method is not being used.
SLP:
When SLP = 1, the HD66727 enters the sleep mode, where all the internal operations are halted
except for the annunciator display function, key scan function, and the R-C oscillator, thus reducing current
consumption. For details, refer to the Sleep Mode section. Only the following instructions can be executed
during the sleep mode.
1. Annunciator address (AAN) set
2. Annunciator data write
3. LED drive/general output port data write
4. Annunciator display on or off (DA = 1 or 0)
5. Voltage follower on or off (AMP = 1 or 0)
6. Standby mode set (STB = 1)
7. Sleep mode cancel (SLP = 0)
8. Key scan data (SD) read
9. Key scan interrupt generation enable/disable (IRE = 1 or 0)
10.Key scan cycle (KF) set
During the sleep mode, the other RAM data and instructions cannot be updated but they are retained.
STB:
When STB = 1, the HD66727 enters the standby mode, where the device completely stops, halting all
the internal operations including the internal R-C oscillator and no external clock pulses are supplied.
However, annunciator display alone is available when the alternating signal for annunciator-driving signals
is supplied to the EXM pin. When the annunciator display is not needed, make sure to turn off display (DA
= 0). Normal key scanning is also halted in the standby mode. However, the HD66727 can detect four key
inputs connected with strobe signal KST0, thus generating the key scan interrupt (IRQ*). For details, refer
to the Standby Mode section and the Key Scan Interrupt section. Only the following instructions can be
executed during the standby mode.
1. Annunciator address (AAN) set
2. Annunciator data write
3. LED drive/general output port data write
4. Annunciator display on or off (DA = 1 or 0)
5. Voltage follower on or off (AMP = 1 or 0)
6. Start oscillator
7. Standby mode cancel (STB = 0)
8. Key scan interrupt generation enable/disable (IRE = 1 or 0)
相關PDF資料
PDF描述
HCD66727A04 Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function
HCD66727A04BP Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function
HCD66730A00 Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display
HCD66730A01 Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display
HCD66731A00BP Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display
相關代理商/技術參數(shù)
參數(shù)描述
HCD66727A04 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function
HCD66727A04BP 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function
HCD66730A00 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display
HCD66730A01 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display
HCD66731A00BP 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display
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