參數(shù)資料
型號(hào)： M37221EFSP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDIP42
封裝： 0.600 INCH, 1.778 MM PITCH, SHRINK, PLASTIC, DIP-42
文件頁(yè)數(shù)： 29/63頁(yè)
文件大?。?/td> 1371K
代理商： M37221EFSP
M37221EF-XXXSP,M37221EFSP
MITSUBISHI MICROCOMPUTERS
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
35
12 dots
16 dots
CRT DISPLAY FUNCTIONS
(1) Outline of CRT Display Functions
Table 9 outlines the CRT display functions of the M37221EF-XXXSP.
The M37221EF-XXXSP incorporates a CRT display control circuit
of 24 characters ! 2 lines. CRT display is controlled by the CRT
control register. Up to 256 kinds of characters can be displayed. The
colors can be specified for each character and up to 4 kinds of col-
ors 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 35).
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 36 shows the structure of the CRT display control register.
Figure 37 shows the block diagram of the CRT display control circuit.
Parameter
Number of display
characters
Dot structure
Kinds of characters
Kinds of character sizes
Color
Display expansion
Raster coloring
Character background
coloring
Table 9. Outline of CRT display functions
Fig. 35. CRT display character configuration
Fig. 36. Structure of CRT control register
7
CRT control register
(CC: address 00EA16)
All-blocks display control bit (Note)
0 : All-blocks display off
1 : All-blocks display on
Block 1 display control
bit 0 : Block 1 display off
1 : Block 1 display on
Block 2 display control
bit 0 : Block 2 display off
1 : Block 2 display on
P10/OUT2 pin switch bit
0 : P10
1 : OUT2
Note: Display is controlled by logical product (AND)
between the all-blocks display control bit and
each block display control bit.
Kinds of colors
Coloring unit
Functions
24 characters ! 2 lines
12 ! 16 dots (refer to Figure 35)
256 kinds
3 kinds
1 screen: 4 kinds, maximum 7 kinds
A character
Possible (multiline display)
Possible (maximum 7 kinds)
Possible (a character unit, 1 screen :
4 kinds, maximum 7 kinds)
0
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M37221FP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37221M4H 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37221M4H-XXXFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37221M4H-XXXSP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37221M6 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
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