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M35047 Datasheet(PDF) 21 Page - Mitsubishi Electric Semiconductor

No. de pieza M35047
Descripción Electrónicos  SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS?
PDF  50 Pages
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Fabricante Electrónico  MITSUBISHI [Mitsubishi Electric Semiconductor]
Página de inicio  http://www.mitsubishichips.com
Logo MITSUBISHI - Mitsubishi Electric Semiconductor

M35047 Datasheet(HTML) 21 Page - Mitsubishi Electric Semiconductor

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MITSUBISHI MICROCOMPUTERS
M35047-XXXSP/FP
SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS
21
(2) To set display frequency range
Whenever setting display frequency (when EXCK1 = "0",
EXCK0 = "1", or EXCK1 = "1", EXCK0 = "1"), always set the
display frequency range in accordance with the display
frequency. This range is set from DIVS0, DIVS1, DIVS2,
RSEL0 and RSEL1 (address 12116). Frequency ranges are
given here below.
(3) Notes on setting display frequency
To change external clock (display) frequency or horizontal syn-
chronization frequency, always use the following procedures.
To set EXCK1 = "0", EXCK0 = "1"
(a) Turn the display OFF. … DSPON (address 12916) = "0"
(b) Set the display frequency. … Set from DIV10 to
DIV0(address 12016) , DIVS0, DIVS1, DIVS2, RSEL0
and RSEL1 (address 12116).
(c) Wait 20 ms while the horizontal synchronization signal is
being input.
(d) Turn the display ON. … DSPON (address 12916) = "1"
To set EXCK1 = "1", EXCK0 = "1"
(a) Turn the display OFF. … DSPON (address 12916) = "0"
(b) Set the display frequency. … Set from DIV10 to
DIV0(address 12016) , DIVS0, DIVS1, DIVS2, RSEL0
and RSEL1 (address 12116).
(c) Wait 20 ms while the horizontal synchronization signal
and external clock are being input.
(d) Turn the display ON. … DSPON (address 12916) = "1"
RSEL1
0
0
1
1
0
0
1
0
0
1
1
0
0
1
0
0
RSEL0
1
0
1
0
1
0
0
1
0
1
0
1
0
0
1
0
DIVS1
0
0
0
0
0
0
1
1
1
1
1
1
1
0
0
0
DIVS0
0
0
1
1
1
1
0
0
0
1
1
1
1
0
0
0
Display frequency range MHz
90.00 to 100.00
80.00 to 90.50
73.33 to 80.67
66.67 to 74.00
60.00 to 67.33
53.33 to 60.67
50.00 to 54.00
45.00 to 50.50
40.00 to 45.50
36.67 to 40.33
33.33 to 37.00
30.00 to 33.67
26.67 to 30.33
25.00 to 27.75
22.50 to 25.25
20.00 to 22.75
DIVS2
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1



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