http://www.www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf



  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP2140A Datasheet

Standard Protocol Stack Controller

No Preview Available !

MCP2140A pdf
www.DataSheet4U.com
MCP2140A
IrDA® Standard Protocol Stack Controller
With Fixed 9600 Baud Communication Rate
Features
• Implements the IrDA® standard, including:
- IrLAP
- IrLMP
- IAS
- TinyTP
- IrCOMM (9-wire “cooked” service class)
• Provides IrDA standard physical signal layer
support including:
- Bidirectional communication
- CRC implementation
- Fixed Data communication rate of 9600 baud
• Includes UART-to-IrDA standard encoder/
decoder functionality:
- Easily interfaces with industry standard
UARTs and infrared transceivers
• Easily communicates with 16-bit PIC Microcon-
troller IrDA Standard Stack Library
• UART interface for connecting to Data
Communications Equipment (DCE) or Data
Terminal Equipment (DTE) systems
• Transmit/Receive formats (bit width) supported:
- 1.63 µs (Transmit & Receive)
- 3/16 bit time (Receive Only)
• Hardware UART Support:
- 9.6 kbaud baud rate
- 60 Byte Data Buffer Size (64 Byte Packet)
• Infrared Supported:
- 9.6 kbaud baud rate
- 64 Byte Packet Size (60 Data Bytes)
• Operates as Secondary Device
• Wide Operating Voltage: 2.0V to 5.5V
• Automatic Low Power mode:
- < 23 µA (maximum) @ 2.0V, when
no IR activity present (PHACT = L)
• Footprint Compatibility with MCP2140
CMOS Technology
• Low power, high-speed CMOS technology
• Low voltage operation
• Industrial temperature range
• Low power consumption:
- < 407 µA (maximum) @ 2.0V, 3.6864 MHz
Package Types
PDIP, SOIC
RXPDREF
TXIR
PHACT
RESET
VSS
NC
TX
RX
RI
SSOP
RXPDREF
TXIR
PHACT
RESET
VSS
VSS
NC
TX
RX
RI
1 18
2 17
3 16
4 15
5 14
6 13
7 12
8 11
9 10
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
RXPD
CD
OSC1/CLKI
OSC2
VDD
RTS
CTS
DTR
DSR
RXPD
CD
OSC1/CLKI
OSC2
VDD
VDD
RTS
CTS
DTR
DSR
Block Diagram
MCP2140A
TX
Encode and
Protocol Handler
PHACT
Logic
Baud
Rate
Generator
RX
RTS
CTS
DSR
DTR
CD
RI
Protocol
Handler
and Decode
UART
Control
+
-
TXIR
RXPD
RXPDREF
OSC1
OSC2
© 2007 Microchip Technology Inc.
DS22050A-page 1



  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP2140A Datasheet

Standard Protocol Stack Controller

No Preview Available !

MCP2140A pdf
MCP2140A
MCP2140A System Block Diagram
PIC®
Microcontroller
SO
TX
MCP2140A
Encode
TXIR
Baud Rate
Generator
SI
I/O RTS
I/O CTS
I/O DSR
I/O DTR
I/O
I/O
CD
RI
RX
Decode
UART
Control
I/O PHACT
Logic
+ RXPD
- RXPDREF
0.1 µF
www.DataSheet4U.com
Optical
Transceiver
TXD
RXD
R1 (100 kΩ)
R2 (100 kΩ)
Note 1: Not all microcontroller I/O pins are required to be connected to the MCP2140A.
DS22050A-page 2
© 2007 Microchip Technology Inc.



  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP2140A Datasheet

Standard Protocol Stack Controller

No Preview Available !

MCP2140A pdf
1.0 DEVICE OVERVIEW
The MCP2140A is a cost-effective, low pin count (18-
pin), easy-to-use device for implementing IrDA
standard wireless connectivity. The MCP2140A
provides support for the IrDA standard protocol “stack”,
bit encoding/decoding and low cost, discrete IR
receiver circuitry. The MCP2140A is footprint
compatible with the MCP2140. For migration
assistance, please refer to Section 2.14 “Migrating
from the MCP2140 to the MCP2140A”.
The serial and IR interface baud rates are fixed at
9600 baud. The serial interface and IR interface baud
rates are dependent on the device frequency, but IrDA
standard operation requires a device frequency of
3.6864 MHz.
The MCP2140A will specify the IR baud rate to the
Primary Device during the Discover phase.
The MCP2140A can operate in Data Communication
Equipment (DCE) and Data Terminal Equipment (DTE)
applications, and resides between a UART and an
infrared optical transceiver.
The MCP2140A encodes an asynchronous serial data
stream, converting each data bit to the corresponding
infrared (IR) formatted pulse. IR pulses received are
decoded and then handled by the protocol handler
state machine. The protocol handler sends the
appropriate data bytes to the Host Controller in UART-
formatted serial data.
The MCP2140A supports “point-to-point” applications,
that is, one Primary device and one Secondary device.
The MCP2140A operates as a Secondary device and
does not support “multi-point” applications.
Sending data using IR light requires some hardware
and the use of specialized communication protocols.
These protocol and hardware requirements are
described, in detail, by the IrDA standard specifica-
tions. The encoding/decoding functionality of the
MCP2140A is designed to be compatible with the
physical layer component of the IrDA standard. This
part of the standard is often referred to as “IrPHY”.
Some of the devices that the MCP2140A is compatible
with include:
• PCs with IR ports
• PDAs
• 16-bit PIC Microcontroller IrDA Standard Stack
Library
The complete IrDA standard specification is available
for download from the IrDA web site at www.IrDA.org.
MCP2140A
www.DataSheet4U.com
1.1 Applications
The MCP2140A Infrared Communications Controller,
supporting the IrDA standard, provides embedded
system designers the easiest way to implement IrDA
standard wireless connectivity. Figure 1-1 shows a
typical application block diagram, while Table 1-1
shows the pin definitions.
TABLE 1-1: OVERVIEW OF FEATURES
Features
MCP2140A
Serial Communications
Baud Rate Selection
Low Power Mode
Resets (and Delays)
Packages
UART, IR
Fixed
Yes - Automatic
RESET, POR
(PWRT and OST)
18-pin DIP, SOIC,
20-pin SSOP
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
computing devices
• Easy, effortless implementation
• Economical alternative to other connectivity
solutions
• Reliable, high-speed connections
• Safe to use in any environment (can even be
used during air travel)
• No emissions testing needed (FCC, Part 15)
• Eliminates the hassle of cables
• Allows PCs and other electronic devices (such as
PDAs, cell phones, etc.) to communicate with
each other
• Enhances mobility by allowing users to easily
connect
The MCP2140A allows the easy addition of IrDA
standard wireless connectivity to any embedded
application that uses serial data. Figure 1-1 shows
typical implementation of the MCP2140A in an
embedded system.
The IrDA protocol for printer support is not included in
the IrCOMM 9-wire “cooked” service class.
© 2007 Microchip Technology Inc.
DS22050A-page 3




Part Number MCP2140A
Description Standard Protocol Stack Controller
Maker Microchip Technology
Total Page 30 Pages
PDF Download
MCP2140A pdf
Download PDF File
MCP2140A pdf
View for Mobile






Related Datasheet

1 MCP2140 Standard Protocol Stack Controller Microchip Technology
Microchip Technology
MCP2140 pdf
2 MCP2140A Standard Protocol Stack Controller Microchip Technology
Microchip Technology
MCP2140A pdf




Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

site map

webmaste! click here

contact us

Buy Components