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| 型號(hào)： | MCP2140DM-TMPSNS |
| 廠商： | Microchip Technology |
| 文件頁(yè)數(shù)： | 6/58頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | BOARD DEMO FOR MCP2140 |
| 產(chǎn)品培訓(xùn)模塊： | PIC18 J Series MCU Overview |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 主要目的： | 接口，IrDA |
| 嵌入式： | 是，MCU，8 位 |
| 已用 IC / 零件： | MCP2140 |
| 主要屬性： | 帶 PIC18F MCU 和溫度傳感器的 IrDA 控制器 |
| 次要屬性： | 設(shè)置為數(shù)據(jù)記錄器 |
| 已供物品： | 板，軟件 |
| 產(chǎn)品目錄頁(yè)面： | 685 (CN2011-ZH PDF) |
| 相關(guān)產(chǎn)品： | MCP2140A-I/SS-ND - IC IRDA CONTROLLR DTE/DCE 20SSOP MCP2140A-I/SO-ND - IC IRDA CONTROLLR DTE/DCE 18SOIC MCP2140A-I/P-ND - IC IRDA CONTROLLR DTE/DCE 18DIP MCP2140AT-I/SSTR-ND - IC IRDA CONTROLLR DTE/DCE 20SSOP MCP2140AT-I/SOTR-ND - IC IRDA CONTROLLR DTE/DCE 18SOIC MCP2140T-I/SS-ND - IC IRDA CONTROLLR DTE/DCE 20SSOP MCP2140T-I/SO-ND - IC IRDA CONTROLLR DTE/DCE 18SOIC MCP2140-I/SS-ND - IC IRDA CONTROLLR DTE/DCE 20SSOP MCP2140-I/SO-ND - IC IRDA CONTROLLR DTE/DCE 18SOIC MCP2140-I/P-ND - IC IRDA CONTROLLER DTE/DCE 18DIP |
| 其它名稱： | MCP2140DM-TMPSNSR MCP2140DM-TMPSNSR-ND |
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MCP2140
DS21790A-page 14
Preliminary
2003 Microchip Technology Inc.
2.8
Minimizing Power
During IR communication between a Primary Device
and the MCP2140, the MCP2140 is in an operational
mode. In this mode, the MCP2140 consumes the
operational current (Parameter D010).
For many applications, the time that IR communication
is occurring is a small percentage of the applications
operational time. The ability for the IR controller to be
in a low power mode during this time will save on the
applications power consumption. The MCP2140 will
automatically enter a low power mode once IR activity
has stopped and will return to operational mode once
IR activity is detected on the RXPD and RXPDREF
pins.
Another way to minimize system power is to use an I/O
pin of the Host Controller to enable power to the IR
circuity
2.8.1
AUTOMATIC LOW POWER MODE
The Automatic Low Power mode allows the system to
achieve the lowest possible operating current.
When the IR link has been “closed”, the protocol han-
dler state machine returns to the Normal Disconnect
Mode (NDM). During NDM, if no IR activity occurs for
about 10 seconds, the device is disabled and enters
into Low Power mode. In this mode, the device oscilla-
tor is shut down and the PHACT pin will be low
Table 2-3 shows the MCP2140 current. These are
specified in Parameter D010 and Parameter D010A.
TABLE 2-3:
DEVICE MAXIMUM
OPERATING CURRENT
2.8.2
RETURNING TO DEVICE
OPERATION
The device will exit the Low Power mode when the
RXPD pin voltage crosses the REPDREF pin reference
voltage.
A device reset will also cause the MCP2140 to exit Low
Power mode. After device initialization, if no IR activity
occurs for about 10 seconds, the device is disabled and
returns into the Low Power mode.
2.9
PHACT Signal
The PHACT signal indicates that the MCP2140 Proto-
col Handler is active. This output pin is an open collec-
tor, so when interfacing to the Host Controller, a pull-up
resistor is required.
Mode
Current
Comment
PHACT = H 2.2 mA IR communications is
occurring.
PHACT = L
60 A
No IR communications.
Note:
Additional system current is from the
Receiver/Transmitter circuitry.
Note:
For proper operation, the device oscillator
must be within oscillator specification in
the
time
frame
specified
in
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| 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 |
| MCP2140-I/P | 制造商:Microchip Technology Inc 功能描述:IrDA Protocol Handler Communication IC |
| MCP2140-I/SO | 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 |
| MCP2140-I/SO | 制造商:Microchip Technology Inc 功能描述:IrDA Protocol Handler Communication IC |
| MCP2140-I/SS | 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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