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參數(shù)資料
| 型號： | M37221EF-XXXSP |
| 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 |
| 文件頁數(shù)： | 35/63頁 |
| 文件大?。?/td> | 1371K |
| 代理商： | M37221EF-XXXSP |
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M37221EF-XXXSP,M37221EFSP
MITSUBISHI MICROCOMPUTERS
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
40
(4) Memory for Display
There are 2 types of display memory : CRT display ROM (addresses
1000016 to 11FFF16) used to store character dot data (masked) and
CRT display RAM (addresses 060016 to 06B716) used to specify the
colors of characters to be displayed. The following describes each
type of display memory.
ROM for display (addresses 1000016 to 11FFF16)
The CRT display ROM contains dot pattern data for characters to be
displayed. For characters stored in this ROM to be actually displayed,
it is necessary to specify them by writing the character code inherent
to each character (code determined based on the addresses in the
CRT display ROM) into the CRT display RAM. The character code
list is shown in Table 11.
The CRT display ROM has a capacity of 8 K bytes. Since 32 bytes
are required for 1 character data, the ROM can stores up to 256
kinds of characters.
The CRT display ROM space is broadly divided into 2 areas. The
[vertical 16 dots] ! [horizontal (left side) 8 dots] data of display char-
acters are stored in addresses 1000016 to 107FF16 and 1100016 to
117FF16; the [vertical 16 dots] ! [horizontal (right side) 4 dots] data
of display characters are stored in addresses 1080016 to 10FFF16
and 1180016 to 11FFF16 (refer to Figure 44). Note however that the
high-order 4 bits in the data to be written to addresses 1080016 to
10FFF16 and 1180016 to 11FFF16 must be set to “1” (by writing data
“FX16”).
Fig. 44. Display character stored data
10XX016
80016
or
11XX016
80016
0
000
0
000
0
001
0
010
1
0
100
0
100
0
100
0
1
000
0
1
01
111
1
00
1
0
1
0
000
0
1
0
000
0
1
0
000
0
000
0
010
1
0
001
0
11
1
0
00
0
00
0
000
0
00
0
00
0
00
0
10
0
10
0
10
0
01
0
01
0
01
0
00
0
00
0
000
10XXF16
80016
or
11XXF16
80016
11
1
11
1
11
1
11
1
11
1
11
1
11
1
11
1
11
1
11
1
11
1
11
1
11
1
11
1
11
1
b7
b0
b7
b0
b3
10XX016
or
11XX016
10XXF16
or
11XXF16
0
000
0
1
0
+
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M37221EFSP | 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDIP42 |
| M37221M6-XXXFP | 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDSO42 |
| M37221M6-XXXSP | 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP42 |
| M37221M6H-XXXFP | 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDSO42 |
| M37221EASP | 8-BIT, OTPROM, 8.1 MHz, MICROCONTROLLER, PDIP42 |
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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