参数资料
型号: M37274MA-XXXSP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, MICROCONTROLLER, PDIP52
封装: 0.600 INCH, 1.778 MM PITCH, SHRINK, PLASTIC, DIP-52
文件页数: 92/131页
文件大小: 2049K
代理商: M37274MA-XXXSP
63
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37274MA-XXXSP
PRELIMINARY
Notice:
This
is not
a final
specification.
Some
paramentic
limits
are
subject
to change.
MITSUBISHI MICROCOMPUTERS
Fig. 69. Relation between Field Determination Flag and Display Font
Both HSYNC signal and VSYNC signal are negative-polarity input
Field
Even
Odd
Field
determination
flag(Note)
Display dot line
selection bit
Display dot line
0 (T2 > T1)
1 (T3 < T2)
0
1
0
1
When using the field determination flag, be sure to set bit 0 of the PWM mode register 1 (address 020A 16) to “0.”
T2
T3
OSD ROM font configuration diagram
Dot line 0
Dot line 1
Odd
Dot line 0
Dot line 1
(n – 1) field
(Odd-numbered)
T1
0.25 to 0.50[
s] at
f(XIN) = 8 MHz
CC mode EXOSD mode
13
57
9
11
13
15
1
3
5
7
9
11
13
15
17
19
21
23
25
26
24
22
20
18
16
14
12
10
8
6
4
2
4
6
8
10
12
14
16
1
3
5
7
9
11
13
15
17
19
20
18
16
14
12
10
8
6
4
2
13
5
7
9
11
13
15
2
4
6
8
10
12
14
16
OSD mode
HSYNC
VSYNC and
VSYNC
control
signal
in microcom-
puter
Upper :
VSYNC signal
Lower :
VSYNC control
signal in
micro-
computer
(n) field
(Even-numbered)
(n + 1) field
(Odd-numbered)
When the display dot line selection bit is “0,”
the “
” font is displayed at even field, the
” font is displayed at odd field. Bit 7 of the
I/O polarity control register can be read as the
field determination flag : “1” is read at odd field,
“0” is read at even field.
Note : The field determination flag changes at a rising edge of the V SYNC control signal (negative-polarity input) in
the microcomputer.
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