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  Microchip Technology Semiconductor Electronic Components Datasheet  


MCP2140

Standard Protocol Stack Controller



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MCP2140
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
• UART interface for connecting to Data
Communications Equipment (DCE) or Data
Terminal Equipment (DTE) systems
• Transmit/Receive formats (bit width) supported:
- 1.63 µs
• Hardware UART Support:
- 9.6 kbaud baud rate
- 29 Byte Data Buffer Size
• Infrared Supported:
- 9.6 kbaud baud rate
- 64 Byte Data Packet Size
• Operates as Secondary Device
• Automatic Low Power mode
- < 60 µA when no IR activity present
(PHACT = L)
CMOS Technology
• Low power, high-speed CMOS technology
• Fully static design
• Low voltage operation
• Industrial temperature range
• Low power consumption
- < 1 mA @ 3.0V, 7.3728 MHz (typical)
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
MCP2140
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
2003 Microchip Technology Inc.
Preliminary
DS21790A-page 1



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MCP2140 pdf
MCP2140
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MCP2140 System Block Diagram
PICmicro®
Microcontroller
SO
TX
MCP2140
Decode
TXIR
IR LED
SI
I/O
I/O
I/O
I/O
RTS
CTS
DSR
DTR
I/O
I/O
CD
RI
Baud Rate
Generator
RX
Encode
UART
Control
+
-
RXPD
IR Receive
Detect
RXPDREF Circuitry
IR Photo
diode
I/O PHACT
Logic
Note 1: Not all microcontroller I/O pins are required to be connected to the MCP2140.
DS21790A-page 2
Preliminary
2003 Microchip Technology Inc.



Part Number MCP2140
Description Standard Protocol Stack Controller
Maker Microchip Technology - Microchip Technology
Total Page 58 Pages
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