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參數(shù)資料
| 型號： | MCP2122-E/P |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 36/38頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ENCODER/DECODER IRDA 8-DIP |
| 標(biāo)準(zhǔn)包裝： | 60 |
| 類型： | 紅外線編碼器/解碼器 |
| 應(yīng)用： | 數(shù)據(jù)記錄，數(shù)據(jù)交換 |
| 電壓 - 電源，模擬： | 1.8 V ~ 5.5 V |
| 電壓 - 電源，數(shù)字： | 1.8 V ~ 5.5 V |
| 安裝類型： | 通孔 |
| 封裝/外殼： | 8-DIP（0.300"，7.62mm） |
| 供應(yīng)商設(shè)備封裝： | 8-PDIP |
| 包裝： | 管件 |
| 配用： | MCP212XDM-ND - BOARD DEVELOPMENT IRDA |
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2007 Microchip Technology Inc.
Preliminary
DS21894C-page 7
MCP2122
2.4
16XCLK (Bit Clock)
The MCP2122 requires an external clock source to
operate. The 16XCLK pin is the device clock input (see
Figure 2-5) and is independent of the host UART
interface or the IR interface. The 16XCLK determines
all timing during device operation. It is the edge of the
16XCLK pin that causes activity to occur.
The 16XCLK signal can also be referred to as a bit
clock (BITCLK). There are 16 BITCLKs for each bit
time. The BITCLKs are used for the generation of the
Start bit, the eight data bits and the Stop bit.
When the embedded system could be receiving IR
communication, the MCP2122 is required to have the
16XCLK signal clocking at the expected frequency,
with minimal variation in that frequency. Between data
bytes (Stop bit to Start bit), the 16XCLK frequency can
be changed. This may occur in systems where the Host
Controller is implementing one of the IrDA standard
application layer protocols (such as IrObex).
When the embedded system does not want to receive
IR communications, the 16XCLK clock can be disabled
(static). This will reduce the power consumption of the
system.
Figure 2-6 shows the relationship of the 16XCLK signal
to the RXIR input, which then determines the RX output
signal. Figure 2-7 shows the relationship of the
16XCLK signal to the TX input, which then determines
the TXIR output signal. For device timing information,
refer to Section 4.0 “Electrical Characteristics”.
FIGURE 2-5:
DEVICE CLOCK SOURCE
FIGURE 2-6:
16XCLK AND RX/RXIR
FIGURE 2-7:
16XCLK AND TX/TXIR
MCP2122
16XCLK
RXIR
RX
16 16XCLK
≤ 3 CLK
16 16XCLK
Bit A
Bit B
(input)
(output)
(input)
3 CLK (
≤ ~ 4 s)
16XCLK
TX
TXIR
16 16XCLK
Bit A
Bit B
(input)
(output)
(input)
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| MCP2122T-E/P | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Infrared Encoder/Decoder |
| MCP2122T-E/SN | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 IrDA Encoder/Decoder RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| MCP2122T-E/SNG | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Extended Temp Range (-40 to 125C) RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| MCP212XDM | 功能描述:其他開發(fā)工具 MCP2120/22 Dev Board RoHS:否 制造商:Parallax 產(chǎn)品:ELEV-8 Hex Upgrade Kits 類型:Robotics 工具用于評估:ELEV-8 Quadcopter 工作電源電壓: |
| MCP212XEV-DB | 功能描述:子卡和OEM板 MCP212X Dev Dghtr Brd RoHS:否 制造商:BeagleBoard by CircuitCo 產(chǎn)品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit |
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