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參數(shù)資料
| 型號(hào)： | MCP2140A-I/SS |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 5/66頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC IRDA CONTROLLR DTE/DCE 20SSOP |
| 標(biāo)準(zhǔn)包裝： | 67 |
| 控制器類型： | IRDA 標(biāo)準(zhǔn)協(xié)議?？刂破?br> |
| 接口： | UART |
| 電源電壓： | 3 V ~ 5.5 V |
| 電流 - 電源： | 2.2mA |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-SSOP（0.209"，5.30mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-SSOP |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 685 (CN2011-ZH PDF) |
| 配用： | MCP2140DM-TMPSNS-ND - BOARD DEMO FOR MCP2140 |
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2007-2011 Microchip Technology Inc.
DS22050B-page 13
MCP2140A
2.5.2
DECODER (DEMODULATION)
The modulated signal (data) from the IR transceiver
module (on the RXIR pin) is demodulated to form the
received data (on the RX pin). Once demodulation of
the data byte occurs, the data that is received is trans-
mitted by the MCP2140A UART (on the RX pin).
Figure 2-7 shows the decoding of the modulated
signal.
Each bit time is comprised of 16-bit clocks. If the value
to be received is a logic-low, the RXIR pin will be a low
level for the first 3-bit clock cycles, or a minimum of
1.6 s. The remaining 13-bit clock cycles (or difference
up to the 16-bit clock time) will be high. If the value to
be received is a logic-high, the RXIR pin will be a high
level for the entire 16-bit clock cycles. The level on the
RX pin will be in the appropriate state for the entire 16
clock cycles.
2.6
IR Port Baud Rate
The baud rate for the MCP2140A IR port (the TXIR and
RXIR pins) is fixed at the default rate of 9600 baud. The
primary device will be informed of this parameter during
NDM. The host UART baud rate and the IR port baud
rate are the same.
FIGURE 2-7:
DECODING
Note:
The signal on the RX pin does not actually
line up in time with the bit value that was
received on the RXIR pin, as shown in
Figure 2-7. The RXIR bit value is shown to
represent the value to be transmitted on
the RX pin.
BITCLK
RX
RXIR Bit Value
01
0
1
1.6 s (up to 3 CLK)
13 CLK
16 CLK
Start Bit
Data bit 0
Data bit 1
Data bit 2
Data bit ...
(CLK)
RXPD
RXPDREF
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| MCP2140AT-I/P | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:IrDA㈢ Standard Protocol Stack Controller With Fixed 9600 Baud Communication Rate |
| MCP2140AT-I/SO | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Enhanced MCP2140 Win Mobile 5.0 compatble RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| MCP2140AT-I/SS | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Enhanced MCP2140 Win Mobile 5.0 compatble RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| MCP2140DM-TMPSNS | 功能描述:溫度傳感器開發(fā)工具 MCP2140 IrDA Wire- less Temp Demo RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:Temperature Sensors and Control ICs 工具用于評估:MSP430G2553 接口類型:USB 工作電源電壓: 工作電源電流: |
| MCP2140-I/P | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 9600bd fixd spd IrDA RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
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