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参数资料
| 型号： | M37271EFSP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, OTPROM, 8.1 MHz, MICROCONTROLLER, PDIP52 |
| 封装： | 0.600 INCH, 1.78 MM PITCH, PLASTIC, SDIP-52 |
| 文件页数： | 26/64页 |
| 文件大小： | 1252K |
| 代理商： | M37271EFSP |
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MITSUBISHI MICROCOMPUTERS
M37271MF-XXXSP
M37271EF-XXXSP, M37271EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
29
DATA SLICER
The M37271MF-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 the 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. 22. Data slicer block diagram
10 0
00 00 10 1
Composite
video
signal
Hundred of kiloohms
to 1 M
Sync pulse counter
register
(address 020F16)
Clock run-in register 2
(address 00E716)
Data slicer control register 2
(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
(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
00 0
00
0 10 1
0.1
F
470
560 pF
CVIN
1
F
1 k
200 pF
15 k
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.
相关PDF资料 |
PDF描述 |
|---|---|
| M37271MF-XXXSP | 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP52 |
| M37272M6-XXXSP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP42 |
| M37273MF-XXXSP | 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP52 |
| M37274EFSP | 8-BIT, OTPROM, MICROCONTROLLER, PDIP52 |
| M37274EFSP | 8-BIT, OTPROM, 8.1 MHz, MICROCONTROLLER, PDIP52 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M37271EFSS | 功能描述:EPROM MCU/8BIT CMOS EMULATION CH RoHS:否 类别:编程器，开发系统 >> 配件 系列:- 标准包装:1 系列:- 附件类型:适配器板 适用于相关产品:RCB230，RCB231，RCB212 配用:26790D-ND - RCB BREAKOUT BOARD RS232 CABLE |
| M37271EF-XXXSP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37271MF | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37271MF-213SP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37271MF-219SP | 制造商:MITSUBISHI 制造商全称: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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