參數(shù)資料
型號: MB89951PFM
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 5 MHz, MICROCONTROLLER, PQFP64
封裝: 0.65 MM PITCH, QFP-64
文件頁數(shù): 85/110頁
文件大小: 619K
代理商: MB89951PFM
HARDWARE CONFIGURATION
2– 61
[Bits 3 and 2] MS1 and MS0: Display mode select bit
These bits are used to select display mode. The mode is set according to
the following table.
[Bits 1 and 0] FP1 and FP0 (Frame Period 1 and 0): Clock cycle select bit
These bits are used to select the LCD clock cycle. The frame frequency is
shown below. Calculate the optimum frame frequency and set the register
according to the LCD module.
[Bits 6 to 0] SEG15 to SEG00: Port/segment output select bit
SEG00: Selection bit for P00/SEG20 to P07/SEG27
SEG10: Selection bit for P10/SEG28 to P13/SEG31
SEG11: Selection bit for P14/SEG32 and P15/SEG33
SEG12: Selection bit for P16/SEG34
SEG13: Selection bit for P17/SEG35
SEG14: Selection bit for P20/SEG36 to P23/SEG39
SEG15: Selection bit for P24/SEG40 to P25/SEG41
Note: The setting of this register MUST be consistent with the mask option.
This register cannot override the mask option.
MS1
0
1
Display mode
Number of time divisions: N
MS0
0
1
0
1
LCD stop
1/2 duty output mode
1/3 duty output mode
1/4 duty output mode
2
3
4
Peripherals
0
1
0
1
0
1
fCH/(2
11
× N)
fCH/(2
12
× N)
fCH/(2
13
× N)
fCH/(2
14
× N)
FP1
Frame frequency
FP0
610 Hz (N = 4)
305 Hz (N = 4)
153 Hz (N = 4)
76 Hz (N = 4)
N: Number of time divisions
fCH: Clock frequency (5 MHz)
Address: 007AH
(Initial value)
-0000000B
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 SEG00
(R/W)
(b) Segment output select register (SEGR)
LCDR
Address: 0079H
SEGR
Address: 007AH
Selects port function
Selects segment output
0
1
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