參數(shù)資料
型號(hào): M37281MAH-XXXSP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP52
封裝: PLASTIC, SHRINK, DIP-52
文件頁數(shù): 132/158頁
文件大?。?/td> 1472K
代理商: M37281MAH-XXXSP
75
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
M37281MAH–XXXSP,M37281MFH–XXXSP
M37281MKH–XXXSP,M37281EKSP
The display start position in the vertical direction is determined by
counting the horizontal 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
I/O polarity control register (address 021716).
Fig. 8.11.9 Supplement Explanation for Display Position
When bits 0 and 1 of the I/O polarity control register
(address 021716) are set to “1” (negative polarity)
VSYNC signal input
VSYNC control
signal in
microcomputer
0.25 to 0.50 [
s]
( at f(XIN) = 8MHz)
(Note 2)
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
HSYNC
signal input
Period of counting
HSYNC signal
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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M37281MKH-XXXSP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
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