參數(shù)資料
型號(hào)： M37270
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
中文描述： 單芯片8位CMOS微機(jī)隱蔽字幕解碼器和屏幕顯示控制器
文件頁(yè)數(shù)： 23/94頁(yè)
文件大小： 1551K
代理商： M37270
MITSUBISHI MICROCOMPUTERS
M37270MF-XXXSP
M37270EF-XXXSP, M37270EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
23
A-D control register
(ADCON: address 00EF
16
)
A-D conversion completion bit
0 : Conversion in purogress
1 : Conversion completed
V
CC
connection selection bit
0 : OFF
1 : ON
Fix this bit to “0.”
Analog input pin selection bits
b1 b0
0
0 : P2
6
/AD1
0 1 : P2
5
/AD2
1 0 : P2
4
/AD3
1 1 : P4
0
/AD4
0
7
A-D CONVERTER
(1)A-D Conversion Register (AD)
A-D conversion reigister is a read-only register that stores the result
of an A-D conversion. This register should not be read during A-D
conversion.
(2)A-D Control Register (ADCON)
The A-D control register controls A-D conversion. Bits 1 and 0 of this
register select analog input pins. When these pins are not used as
anlog input pins, they are used as ordinary I/O pins. Bit 3 is the A-D
conversion completion bit, A-D conversion is started by writing “0” to
this bit. The value of this bit remains at “0” during an A-D conversion,
then changes to “1” when the A-D conversion is completed.
Bit 4 controls connection between the resistor ladder and V
CC
. When
not using the A-D converter, the resistor ladder can be cut off from
the internal V
CC
by setting this bit to “0.” This can realize the low-
power dissipation.
(3)Comparison Voltage Generator (Resistor
Ladder)
The voltage generator divides the voltage between V
SS
and V
CC
by
256, and outputs the divided voltages to the comparator as the refer-
ence voltage V
ref
.
(4)Channel Selector
The channel selector connects an analog input pin selected by bits 1
and 0 of the A-D control register to the comparator.
(5)Comparator and Control Circuit
The conversion result of the analog input voltage and the reference
voltage “V
ref
” is stored in the A-D conversion register. The A-D con-
version completion bit and A-D conversion interrupt request bit are
set to “1” at the completion of A-D conversion.
Fig. 16. A-D comparator block diagram
Fig. 15. Structure of A-D control register
A-D control register
(
address 00EF
16
)
A-D control circuit
Data bus
Switch tree
A-D conversion
interrupt request
Resistor ladder
Compa-
rator
C
A-D conversion register
P2
6
/AD1
P2
5
/AD2
P2
4
/AD3
P4
0
/AD4
(
address 00EE
16
)
b7
b0
2
8
V
SS
V
CC
0
相關(guān)PDF資料
PDF描述
M37270EF Single Chip 8 Bits Microcomputer(8位單片機(jī))
M37270EFSP Single Chip 8 Bits Microcomputer(8位單片機(jī))
M37270MF Single Chip 8 Bits Microcomputer(8位單片機(jī))
M37270MF-100SP SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
M37270MF-101SP SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M37270EF 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
M37270EFSP 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
M37270EFSS 功能描述:EPROM MCU/8BIT CMOS EMULATION CH RoHS:否 類(lèi)別:編程器，開(kāi)發(fā)系統(tǒng) >> 配件 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 附件類(lèi)型:適配器板 適用于相關(guān)產(chǎn)品:RCB230，RCB231，RCB212 配用:26790D-ND - RCB BREAKOUT BOARD RS232 CABLE
M37270EF-XXXSP 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
M37270ERSS 功能描述:EMULATION MCU/8BIT CMOS EMULATIO RoHS:否 類(lèi)別:編程器，開(kāi)發(fā)系統(tǒng) >> 配件 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program RoHS指令信息:IButton RoHS Compliance Plan 標(biāo)準(zhǔn)包裝:1 系列:- 附件類(lèi)型:USB 至 1-Wire? RJ11 適配器 適用于相關(guān)產(chǎn)品:1-Wire? 設(shè)備 產(chǎn)品目錄頁(yè)面:1429 (CN2011-ZH PDF)
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