- 您现在的位置：买卖IC网 > PDF目录10965 > MCP2122-E/PG (Microchip Technology)IC ENCODER/DECODER INFRARED 8DIP PDF资料下载
参数资料
| 型号： | MCP2122-E/PG |
| 厂商： | Microchip Technology |
| 文件页数： | 30/34页 |
| 文件大小： | 0K |
| 描述： | IC ENCODER/DECODER INFRARED 8DIP |
| 标准包装： | 60 |
| 类型： | 红外线编码器/解码器 |
| 应用： | 数据记录，数据交换 |
| 电压 - 电源，模拟： | 1.8 V ~ 5.5 V |
| 电压 - 电源，数字： | 1.8 V ~ 5.5 V |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-PDIP |
| 包装： | 管件 |
| 配用： | MCP212XDM-ND - BOARD DEVELOPMENT IRDA |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页当前第30页第31页第32页第33页第34页
2004 Microchip Technology Inc.
Preliminary
DS21894B-page 5
MCP2122
2.0
DEVICE OPERATION
The MCP2122 is a low-cost infrared encoder/decoder.
The baud rate is the same for the host UART and IR
interfaces and is determined by the frequency of the
16XCLK signal, with a maximum baud rate of
115.2 Kbaud.
The MCP2122 is made up of these functional modules:
Clock Driver (16XCLK)
Reset
IR Encoder/Decoder
- IrDA Standard Encoder
- IrDA Standard Decoder
The 16XCLK circuit allows a clock input to provide the
device clock.
The Reset circuit supports an external reset signal.
The IR Encoder logic takes a data bit and converts it to
the IrDA standard signal according to the IrDA standard
Physical Layer specification, while the IR Decoder
logic takes the IrDA standard signal and converts it to
8-bit data bytes.
2.1
Power-up
As the device is powered up, there will be a voltage
range in which the device will not operate properly. The
device should be reset once it has entered the normal
operating range (from an out-of-voltage condition). The
RESET pin may then be forced high.
Other device operating parameters (such as frequency,
temperature, etc.) must also be within their operating
ranges when the device exits reset. Otherwise, the
device may not function as desired.
2.2
Device Reset
The MCP2122 is forced into the known state (RESET)
when the RESET pin is in the low state. Once the
RESET pin is brought to a high state, the device begins
normal operation (if the device operating parameters
are met). Table 2-1 shows the states of the output pins
while the device is in reset (RESET = Low). Table 2-2
shows the state of the output pins once the device exits
reset, RESET = L
→H (device in Normal Operation
mode).
The MCP2122 has a RESET noise filter in the RESET
input signal path. The filter will detect and ignore small
pulses.
Using the RESET pin to enter a low-power state is
discussed in Section 2.9 “Minimizing Power”.
TABLE 2-1:
DEFAULT OUTPUT PIN
STATES IN DEVICE RESET
TABLE 2-2:
DEFAULT OUTPUT PIN
STATES AFTER DEVICE
RESET (RESET = L
→H)
2.3
Decoupling
It is highly recommended that the MCP2122 have a
decoupling capacitor (CBYP). A 0.01 F capacitor is
recommended as a starting value, but an evaluation of
the best value for your circuit/layout should be
performed. Place this decoupling capacitor (CBYP) as
close to the MCP2122 as possible (see Figure 2-1).
FIGURE 2-1:
DEVICE DECOUPLING
Input Pin
Output Pin
State
Comments
Name
State
RX
TXIR
RESET
L
H
L
Device in Reset mode
Input Pin
Output Pin
State
Comments
Name State
RX
TXIR
TX
L
—
L
→H
→L
After 7 - 8 16XCLK
pulses, the TXIR pin
will pulse high.
H—
L
RXIR
L
H
→L
—
After 4 16XCLK pulses,
RX = L.
HH
—
VDD
(bypass
capacitor)
MCP2122
VDD
RESET
VSS
16XCLK
TX
RX
TXIR
RXIR
CBYP
相关PDF资料 |
PDF描述 |
|---|---|
| VE-BTM-IW-B1 | CONVERTER MOD DC/DC 10V 100W |
| MAX9526ATJ+T | IC VID DECODER NTSC/PAL 32-TQFN |
| MAX9526AEI/V+ | IC VID DECODER NTSC/PAL 28QSOP |
| VE-2NK-IY-F1 | CONVERTER MOD DC/DC 40V 50W |
| VE-B4T-IX-B1 | CONVERTER MOD DC/DC 6.5V 75W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP2122T-E/P | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Infrared Encoder/Decoder |
| MCP2122T-E/SN | 功能描述:编码器、解码器、复用器和解复用器 IrDA Encoder/Decoder RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
| MCP2122T-E/SNG | 功能描述:编码器、解码器、复用器和解复用器 Extended Temp Range (-40 to 125C) RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
| MCP212XDM | 功能描述:其他开发工具 MCP2120/22 Dev Board RoHS:否 制造商:Parallax 产品:ELEV-8 Hex Upgrade Kits 类型:Robotics 工具用于评估:ELEV-8 Quadcopter 工作电源电压: |
| MCP212XEV-DB | 功能描述:子卡和OEM板 MCP212X Dev Dghtr Brd RoHS:否 制造商:BeagleBoard by CircuitCo 产品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit |
发布紧急采购，3分钟左右您将得到回复。