參數(shù)資料
型號： M37274EFSP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, MICROCONTROLLER, PDIP52
封裝： 0.600 INCH, 1.78 MM PITCH, SHRINK, PLASTIC, DIP-52
文件頁數(shù)： 89/147頁
文件大?。?/td> 2042K
代理商： M37274EFSP
46
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37274EFSP
PRELIMINARY
Notice:
This
is not
a final
specification.
Some
paramentic
limits
are
subject
to change.
MITSUBISHI MICROCOMPUTERS
After a falling of the clock run-in pulse set in bits 2 to 0 of clock run-
in detect register 2 (address 00E916) is detected, a start bit is
detected by sampling a comparator output. A sampling clock for
sampling is obtained by dividing the reference clock generated in
the timing signal generating circuit by 13.
Fig. 41. Clock Run-in Register 2
Fig. 42. Clock Run-in Detect Register 2
Figure 42 shows the structure of clock run-in detect register 2.
The contents of bits 2 to 0 of clock run-in detect register 2 and bit
1 of clock run-in register 2 are written at a falling of the horizontal
synchronous signal. For this reason, even if an instruction for setting
is executed, the contents of the register cannot be rewritten until a
falling of the horizontal synchronous signal.
b7 b6 b5 b4 b3 b2 b1 b0
Clock run-in register 2 (CR2) [Address 00E716]
Clock Run-in Register 2
0R W
0,
2 to 4,
7
Fix these bits to “1.”
B
After reset
Functions
Name
RW
00
1
0R W
5, 6
Fix these bits to “0.”
11
1
Start bit detecting
method selection bit
(CR21)
0: Method 1
1: Method 2
b7 b6 b5 b4 b3 b2 b1 b0
Clock run-in detect register 2 (CRD2) [Address 00E916]
Clock Run-in Detect Register 2
B
After reset
Functions
Name
RW
0R W
0
to
2
0R W
Clock run-in pulses for
sampling
(CRD20 to CRD22)
3
to
7
Data clock generating
time
(CRD23 to CRD27)
b2 b1 b0
0
0 : Not available
0
1 : 1st pulse
0
1
0 : 2nd pulse
0
1
1 : 3rd pulse
1
0
0 : 4th pulse
1
0
1 : 5th pulse
1
0 : 6th pulse
1
1 : 7th pulse
Time from detection of a start
bit to occurrence of a data clock
= (13 + set value) !
reference clock period
2
相關(guān)PDF資料
PDF描述
M37274EFSP 8-BIT, OTPROM, 8.1 MHz, MICROCONTROLLER, PDIP52
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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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M37274MA 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
M37274MA-052SP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
M37274MA-053SP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
M37274MA-082SP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
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