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參數(shù)資料
| 型號(hào)： | M37212EFFP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, OTPROM, MICROCONTROLLER, PQFP80 |
| 封裝： | 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80 |
| 文件頁(yè)數(shù)： | 73/119頁(yè) |
| 文件大?。?/td> | 1308K |
| 代理商： | M37212EFFP |
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57
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
M37212M4/M8–XXXSP, M37212M6–XXXSP/FP
M37212EFSP/FP
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
The vertical display start position is determined by counting the hori-
zontal sync signal (HSYNC). At this time, when VSYNC and HSYNC are
positive polarity (negative polarity), it starts to count the rising edge
(falling edge) of HSYNC signal from after fixed cycle of rising edge
(falling edge) of VSYNC signal. So interval from rising edge (falling
edge) of VSYNC signal to rising edge (falling edge) of HSYNC signal
needs enough time (2 machine cycles or more) for avoiding jitter.
The polarity of HSYNC and VSYNC signals can select with the CRT
port control register (address 00EC16).
Fig. 8.10.5 Supplement Explanation for Display Position
When bits 0 and 1 of the CRT port control register
(address 00EC16) are set to “1” (negative polarity)
VSYNC signal input
VSYNC control
signal in
microcomputer
0.25 to 0.50 [
s]
( at f(XIN) = 8MHz)
Period of counting
HSYNC signal
(See note 2)
HSYNC
signal input
Not count
12345
Notes 1 : The vertical position is determined by counting falling edge of HSYNC
signal after rising edge of VSYNC control signal in the microcomputer.
2 : Do not generate falling edge of HSYNC signal near rising edge of
VSYNC control signal in microcomputer to avoid jitter.
3 : The pulse width of VSYNC and HSYNC needs 8 machine cycles or
more.
8 machine cycles
or more
8 machine cycles
or more
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M37212M4-XXXSP | 8-BIT, MROM, MICROCONTROLLER, PDIP52 |
| M37212EFSP | 8-BIT, OTPROM, MICROCONTROLLER, PDIP52 |
| M37221EF-XXXSP | 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDIP42 |
| M37221EFSP | 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDIP42 |
| M37221M6-XXXFP | 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDSO42 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M37212EFSP | 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 |
| M37212EFSP/FP | 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 |
| M37212M4 | 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 |
| M37212M4-054SP | 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 with ON-SCREEN DISPLAY CONTROLLER |
| M37212M4-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 |
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