參數(shù)資料
型號(hào)： HT49R50
廠商： Holtek Semiconductor Inc.
元件分類： 8位微控制器
英文描述： 8-BIT MICROCONTROLLER
中文描述： 8位微控制器
文件頁(yè)數(shù)： 26/59頁(yè)
文件大?。?/td> 339K
代理商： HT49R50
HT49R50
26
October 22, 1999
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Display memory
LCD display memory
The HT49R50 provides an area of embedded
data memory for LCD display. This area is lo-
cated from 40H to 60H of the RAM at Bank 1.
Bankpointer(BP;locatedat04HoftheRAM)is
the switch between the RAM and the LCD dis-
play memory. When the BP is set as "1", any
data written into 40H~60H will effect the LCD
display. When the BP is cleared to "0", any data
written into 40H~60H means to access the gen-
eral purpose data memory. The LCD display
memory can be read and written to only by indi-
rect addressing mode using MP1. When data is
written into the display data area, it is auto-
matically read by the LCD driver which then
generates the corresponding LCD driving sig-
nals. To turn the display on or off, a "1" or a "0"
iswrittentothecorrespondingbitofthedisplay
memory,respectively.Thefigureillustratesthe
mapping between the display memory and LCD
pattern for the HT49R50.
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