MCP2120-I/SLG Microchip Technology, MCP2120-I/SLG Datasheet - Page 3

• Manufacturer Part Number: MCP2120-I/SLG
• Description: Infrared encoder/decoder, -40C to +85C, 14-SOIC 150mil, TUBE
• Manufacturer: Microchip Technology

1.0
This document contains device specific information for
the following device:
• MCP2120
This device is a low-cost, high-performance, fully-static
infrared encoder/decoder. This device sits between a
UART and an infrared (IR) optical transceiver.
The data received from a standard UART is encoded
(modulated), and output as electrical pulses to the IR
Transceiver. The IR Transceiver also receives data
which it outputs as electrical pulses. The MCP2120
decodes (demodulates) these electrical pulses and
then the data is transmitted by the MCP2120 UART.
This
performed in accordance with the IrDA standard.
Typically a microcontroller interfaces to the IR encoder/
decoder.
Infrared communication is a wireless two-way data
connection using infrared light generated by low-cost
transceiver signaling technology. This provides reliable
communication between two devices.
Infrared technology offers:
• Universal standard for connecting portable
• Easy, effortless implementation
• Economical alternative to other connectivity
• Reliable, high speed connection
• Safe to use in any environment; can even be used
• Eliminates the hassle of cables
• Allows PC’s and non-PC’s to communicate to
• Enhances mobility by allowing users to easily
FIGURE 1-1:
© 2007 Microchip Technology Inc.
computing devices
solutions
during air travel
each other
connect
modulation
DEVICE OVERVIEW
Controller
and
Micro–
System Block Diagram
demodulation
I/O
TX
RX
(S/W Mode)
BAUD2
BAUD1
BAUD0
MODE
method
EN
TX
RX
is
Power
Down
Logic
Baud Rate
Generator
MCP2120
Encode
Decode
1.1
The MCP2120 is a stand–alone IrDA Encoder/Decoder
product.
diagram.
(normal) mode of operation.
TABLE 1-1:
Serial Communications:
Baud Rate Selection:
Low Power Mode:
Resets: (and Delays)
Packages:
Applications
Figure 1-1
Table 1-2
Features
TXIR
RXIR
MCP2120 FEATURES
OVERVIEW
shows the pin definitions in the user
shows a typical application block
Transceiver
TXD
RXD
MCP2120
Optical
Hardware/Software
Wake-up (DRT)
14-pin SOIC
14-pin DIP
MCP2120
UART, IR
DS21618B-page 3
Yes