参数资料
型号: 71M6541F-DB
厂商: Maxim Integrated Products
文件页数: 66/166页
文件大小: 0K
描述: DEMO BOARD 71M6541F
标准包装: 1
系列: *
71M6541D/F/G and 71M6542F/G Data Sheet
The LCD system has the ability to drive up to six segments per SEG driver. If the display is configured with
six back planes, the 6-way multiplexing compresses the number of SEG pins required to drive a display and
therefore enhance the number of DIO pins available to the application. Refer to the LCD_MODE[2:0] field
(I/O RAM 0x2400[6:4]) settings ( Table 57 ) for the different LCD multiplexing choices. If 5-state
multiplexing is selected, SEGDIO27 is converted to COM4. If 6-state multiplexing is selected, SEGDIO26
is converted to COM5. These conversions override the SEG/DIO mapping of SEGDIO26 and SEGDIO27.
Additionally, independent of LCD_MODE[2:0], if LCD_ALLCOM = 1, then SEGDIO26 and SEGDIO27
become COM4 and COM5 if their LCD_MAP[ ] bits are set.
The LCD_ON ( I/O RAM 0x240C[0 ]) and LCD_BLANK ( I/O RAM 0x240C[1] ) bits are an easy way to either
blank the LCD display or turn it fully on. Neither bit affects the contents of the LCD data stored in the
LCDSEG_DIO[ ] registers. In comparison, LCD_RST ( I/O RAM 0x240C[2] ) clears all LCD data to zero.
LCD_RST affects only pins that are configured as LCD.
A small amount of power can be saved by programming the LCD frequency to the lowest value
that provides satisfactory LCD visibility over the required temperature range.
66
Rev 4
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