參數(shù)資料
型號(hào)： M37224M3-XXXSP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP42
封裝： 0.600 INCH, 1.78 MM PITCH, PLASTIC, SDIP-42
文件頁(yè)數(shù)： 31/86頁(yè)
文件大小： 988K
代理商： M37224M3-XXXSP
M37224M3-XXXSP
MITSUBISHI MICROCOMPUTERS
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
34
CRT DISPLAY FUNCTIONS
(1) Outline of CRT Display Functions
Table 5 outlines the CRT display functions of the M37224M3-XXXSP.
The M37224M3-XXXSP incorporates a CRT display circuit of 20
characters ! 2 lines. CRT display is controlled by the CRT control
register. Up to 128 kinds of characters can be displayed. The colors
can be specified for each character and up to 4 kinds of colors can
be displayed on one screen. A combination of up to 7 colors can be
obtained by using each output signal (R, G, and B).
Characters are displayed in a 12 ! 16 dots configuration to obtain
smooth character patterns (refer to Figure 33).
The following shows the procedure how to display characters on the
CRT screen.
Write the display character code in the display RAM.
Specify the display color by using the color register.
Write the color register in which the display color is set in the dis-
play RAM.
Specify the vertical position by using the vertical position register.
Specify the character size by using the character size register.
Specify the horizontal position by using the horizontal position
register.
Write the display enable bit to the designated block display flag of
the CRT control register. When this is done, the CRT display starts
according to the input of the VSYNC signal.
The CRT display circuit has an extended display mode. This mode
allows multiple lines (3 lines or more) to be displayed on the screen
by interrupting the display each time one line is displayed and rewrit-
ing data in the block for which display is terminated by software.
Figure 34 shows the CRT display control register. Figure 35 shows
the block diagram of the CRT display circuit.
Parameter
Number of display
characters
Dot structure
Kinds of characters
Kinds of character sizes
Color
Display expansion
Raster coloring
Table 5. Outline of CRT Display Functions
Kinds of colors
Coloring unit
Functions
20 characters ! 2 lines
12 ! 16 dots (refer to Figure 33)
128 kinds
3 kinds
1 screen: 4 kinds, maximum 7 kinds
A character
Possible (multiline display)
Possible (maximum 7 kinds)
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M372429100 制造商:ITW Switches 功能描述:IN-RUSH
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