- 您现在的位置：买卖IC网 > PDF目录69013 > M37274MA-XXXSP 8-BIT, MROM, MICROCONTROLLER, PDIP52 PDF资料下载
参数资料
| 型号： | M37274MA-XXXSP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, MICROCONTROLLER, PDIP52 |
| 封装： | 0.600 INCH, 1.778 MM PITCH, SHRINK, PLASTIC, DIP-52 |
| 文件页数： | 59/131页 |
| 文件大小： | 2049K |
| 代理商： | M37274MA-XXXSP |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页当前第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页第131页
33
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37274MA-XXXSP
PRELIMINARY
Notice:
This
is not
a final
specification.
Some
paramentic
limits
are
subject
to change.
MITSUBISHI MICROCOMPUTERS
10 0
00 00 10 1
Composite
video
signal
Hundred of kiloohms
Sync pulse counter
register
(address 020F16)
Clock run-in register 2
(address 00E716)
Data slicer control register 2
s
(address 00EB16)
Data slicer control register 1
(address 00EA16)
Window register
(address 00E216)
Clock run-in register 1
(address 00E616)
Caption position register
(address 00E016)
Start bit position register
(address 00E116)
Clock run-in detect register 1
t
(address 00E816)
Clock run-in detect register 2
(address 00E916)
Interrupt request
generating circuit
Data slicer
interrupt
request
Synchronizing
signal counter
Synchronizing
separation
circuit
Sync slice
circuit
Clamping
circuit
Low-pass
filter
Timing signal
generating
circuit
Clock run-in
determination
circuit
Data slice line
specification
circuit
Start bit detecting
circuit
Data clock
generating circuit
16-bit shift register
Data register 1
(address 00E416)
Data register 2
(address 00E516)
Sync slice register 3
(address
00E316)
Data bus
Comparator
0
1
0 111
0
00
01 01
560 pF
CVIN
200 pF
HSYNC
HLF
RVCO
+
–
Reference
voltage
generating
circuit
VHOLD
1000 pF
high-order
low-order
Data slicer ON/OFF
Data register 4
(address 00ED16)
Data register 3
(address 00EC16)
Data slicer control
register 3
(address 021016)
Clock run-in detect
register 3
(address 020816)
Clock run-in
register 3
(address 020916)
External circuit
Note: Make the length of wiring which
is connected to VHOLD, HLF,
RVCO and CVIN pin as short as
possible so that a leakage
current may not be generated
when mounting a resistor or a
capacitor on each pin.
1
DATA SLICER
The M37274MA-XXXSP includes the data slicer function for the
closed caption decoder (referred to as the CCD). This function takes
out the caption data superimposed in the vertical blanking interval of
a composite video signal. A composite video signal which makes the
sync chip’s polarity negative is input to the CVIN pin.
When the data slicer function is not used, the data slicer circuit can
be cut off by setting bit 0 of data slicer control register 1 (address
00EA16) to “0.” Also, the timing signal generating circuit can be cut
off by setting bit 0 of data slicer control register 2 (address 00EB16)
to “0.” These settings can realize the low-power dissipation.
Fig. 25. Data Slicer Block Diagram
0
to 1 M
0.1 F
470
1 F
1k
15k
相关PDF资料 |
PDF描述 |
|---|---|
| M37373M8-XXXSP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP52 |
| M37409M2-XXXFP | 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP56 |
| M37413E6HXXXFP | 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PQFP80 |
| M37413M4-XXXFP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP80 |
| M37420M4-XXXSP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP52 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M37276MF248SP | 制造商:MITSUBISHI 功能描述:* |
| M37276MF2575P | 制造商:MITSUBISHI 功能描述:* |
| M37276MF260SP | 制造商:MITSUBISHI 功能描述:* |
| M37276MF300SP | 制造商:MITSUBISHI 功能描述:* |
| M37276MF301SP | 制造商:MITSUBISHI 功能描述:* |
发布紧急采购，3分钟左右您将得到回复。