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  Microchip Technology Semiconductor Electronic Components Datasheet  


MCP2140A

Standard Protocol Stack Controller



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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



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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
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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.



Part Number MCP2140A
Description Standard Protocol Stack Controller
Maker Microchip Technology - Microchip Technology
Total Page 60 Pages
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