參數(shù)資料
型號: HD66732
廠商: Hitachi,Ltd.
英文描述: Graphics Liquid Crystal Display Controller/Driver Supporting JIS Level-1 and Level-2 Kanji ROM(圖形LCD控制器/驅(qū)動器)
中文描述: 圖形液晶顯示控制器/驅(qū)動器支持日標(biāo)級- 1和第2級漢字光盤(圖形液晶顯示控制器/驅(qū)動器)
文件頁數(shù): 113/133頁
文件大小: 2608K
代理商: HD66732
HD66732
113
Sleep Mode
Setting the sleep mode bit (SLP) to 1 puts the HD66732 in the sleep mode, where the device stops all
internal display operations except for key scan operations, thus reducing current consumption. Specifically,
LCD drive is completely halted. Here, all the SEG (SEG1 to SEG120) and COM (COM1 to COM52,
COMS1/2) pins output the GND level, resulting in no display. If the AMP bit is set to 0 in the sleep mode,
the LCD drive power supply can be turned off, reducing the total current consumption of the LCD module.
The key scan circuit operates normally in the sleep mode, thus allowing normal key scan and key scan
interrupt generation. For details, see the Key Scan Control section and Key Scan Interrupt (Wake-up
Function) section.
Table 60 Comparison of Sleep Mode and Standby Mode
Function
Sleep Mode (SLP = 1)
Standby Mode (STB = 1)
Key Standby Mode
(KSB = 1)
Character display
Turned off
Turned off
Normally turned on
Segment display
Turned off
Turned off
Normally turned on
R-C oscillation circuit
Operates normally
Halted
Operates normally
Key scan circuit
Can operate normally
Halted but IRQ* can be generated
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