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參數(shù)資料
| 型號(hào)： | M37221M6-054SP |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER |
| 中文描述： | 單芯片8位CMOS微機(jī)電壓合成 |
| 文件頁數(shù)： | 44/61頁 |
| 文件大?。?/td> | 1386K |
| 代理商： | M37221M6-054SP |
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MITSUBISHI MICROCOMPUTERS
M37221M6-XXXSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
44
(8) CRT Output Pin Control
The CRT output pins R, G, B, and OUT1 can also function as ports
P5
2
, P5
3
, P5
4
and P5
5
. Set the corresponding bit of the port P5 di-
rection register (address 00CB
16
) to “0” to specify these pins as CRT
output pins, or set it to “1” to specify it as a general-purpose port P5
pins. The OUT2 can also function as port P1
0
. Set bit 7 of the CRT
control register (address 00EA
16
) to “0” to specify it as port P1
0
, set
it to “1” to specify it as OUT2 pin.
The input polarity of signals H
SYNC
and V
SYNC
and output polarity of
signals R, G, B, OUT1 and OUT2 can be specified with the bits of the
CRT port control register (address 00EC
16
) . Set a bit to “0” to specify
positive polarity; set it to “1” to specify negative polarity. The struc-
ture of the CRT port control register is shown in Figure 46.
(9) Raster Coloring Function
An entire screen (raster) can be colored by setting the bits 5 to 7 of
the CRT port control register. Since each of the R, G, and B pins can
be switched to raster coloring output, 7 raster colors can be obtained.
If the R, G, and B pins have been set to MUTE signal output, a raster
coloring signal is output in the part except a no-raster colored char-
acter (in Figure 47, a character “O”) during 1 horizontal scanning
period. This ensures that character colors do not mix with the raster
color. In this case, MUTE signal is output from the OUT1 pin.
An example in which a magenta character “I” and a red character “O”
are displayed with blue raster coloring is shown in Figure 47.
Fig. 47. Example of raster coloring
Fig. 46. Structure of CRT port control register
0
7
CRT port control register
(CRTP : address 00EC
16
)
H
SYNC
input polarity switch
bit
0 : Positive polarity
1 : Negative polarity
R signal output switch bit
0 : R signal output
1 : MUTE signal output
V
SYNC
input polarity switch
bit
0 : Positive polarity
1 : Negative polarity
R, G, B output polarity switch
bit
0 : Positive polarity
1 : Negative polarity
OUT2 output polarity switch
bit
0 : Positive polarity
1 : Negative polarity
OUT1 output polarity switch
bit
0 : Positive polarity
1 : Negative polarity
G signal output switch bit
0 : G signal output
1 : MUTE signal output
B signal output switch bit
0 : B signal output
1 : MUTE signal output
AAAAA
AAAAA
AAAAA
AAAAA
A'
A
A
A
“RED”
“BLUE”
H
SYNC
R
B
OUT1
Signals
across
A – A'
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| M37221M6-079SP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER |
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