參數(shù)資料
型號： M3826AMFLXXXGP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP100
封裝： 14 X 14 MM, 0.50 MM PITCH, PLASTIC, LQFP-100
文件頁數(shù)： 43/82頁
文件大?。?/td> 1377K
代理商： M3826AMFLXXXGP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
3826 Group
45
(frequency of count source for LCDCK)
(divider division ratio for LCD)
f(LCDCK)=
f(LCDCK)
duty ratio
Frame frequency=
Fig. 45 LCD display RAM map
Common Pin and Duty Ratio Control
The common pins (COM0–COM3) to be used are determined by
duty ratio.
Select duty ratio by the duty ratio selection bits (bits 0 and 1 of the
LCD mode register).
When releasing from reset, the VCC (VL3) voltage is output from
the common pins.
LCD Display RAM
Address 004016 to 005316 is the designated RAM for the LCD dis-
play. When “1” are written to these addresses, the corresponding
segments of the LCD display panel are turned on.
LCD Drive Timing
The LCDCK timing frequency (LCD drive timing) is generated in-
ternally and the frame frequency can be determined with the fol-
lowing equation;
Table 14. Duty ratio control and common pins used
Duty
ratio
2
3
4
Common pins used
Notes 1: COM2 and COM3 are open.
2: COM3 is open.
Bit 1
0
1
Bit 0
1
0
1
COM0, COM1 (Note 1)
COM0–COM2 (Note 2)
COM0–COM3
Duty ratio selection bits
Segment Signal Output Pin
Segment signal output pins are classified into the segment-only
pins (SEG0–SEG17), the segment/output port pins (SEG18–
SEG25), and the segment/I/O port pins (SEG26–SEG39).
Segment signals are output according to the bit data of the LCD
RAM corresponding to the duty ratio. After reset release, a VCC
(=VL3) voltage is output to the segment-only pins and the seg-
ment/output port pins are the high impedance condition and
pulled up to VCC (=VL3) voltage.
Also, the segment/I/O port pins(SEG26–SEG39) are set to input
ports, and VCC (=VL3) is applied to them by pull-up resistor.
004016
004116
004216
004316
004416
004516
004616
004716
004816
004916
004A16
004B16
004C16
004D16
004E16
004F16
005016
005116
005216
005316
Bit
Address
SEG1
SEG3
SEG5
SEG7
SEG9
SEG11
SEG13
SEG15
SEG17
SEG19
SEG21
SEG23
SEG25
SEG27
SEG29
SEG31
SEG33
SEG35
SEG37
SEG39
765
432
10
COM3
COM0
COM2 COM1 COM0 COM3 COM2 COM1
SEG0
SEG2
SEG4
SEG6
SEG8
SEG10
SEG12
SEG14
SEG16
SEG18
SEG20
SEG22
SEG24
SEG26
SEG28
SEG30
SEG32
SEG34
SEG36
SEG38
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