MCP2140A-I/SS Microchip Technology, MCP2140A-I/SS Datasheet - Page 24

• Manufacturer Part Number: MCP2140A-I/SS
• Description: IC IRDA CONTROLLR DTE/DCE 20SSOP
• Manufacturer: Microchip Technology

Specifications of MCP2140A-I/SS

• Interface: UART
• Controller Type: IRDA Standard Protocol Stack Controller
• Voltage - Supply: 3 V ~ 5.5 V
• Current - Supply: 2.2mA
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 20-SSOP
• Supply Voltage Range: 3V To 5.5V
• Power Dissipation Pd: 800mW
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: SSOP
• No. Of Pins: 20
• Svhc: No SVHC (15-Dec-2010)
• Interface Type: UART
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MCP2140DM-TMPSNS - BOARD DEMO FOR MCP2140
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

MCP2140A
2.14
This section shows you in the major differences
between the MCP2140 and the MCP2140A. Your appli-
cation may have other sensitivities and a complete sys-
tem validation should be done.
Table 2-3
the MCP2140A in comparison to the MCP2140.
TABLE 2-3:
DS22050A-page 24
Feature
Voltage Range
Frequency of Operation
(MHz)
UART operation
UART Receiver buffer
Size (bytes) (max.)
UART Transmit buffer
Size (bytes) (max.)
IR Receiver Frame
Payload Size (bytes)
(max.)
IR Transmit Frame
Payload Size (bytes)
(max.)
Max I
at min. V
Integrated Optical
Transceivers RXD
wave shaping circuit
Optical Transceiver RXPD
bit signal polarity
Note 1: The External Wave Shaping Circuit is not
DD
2: The MCP2140A will drive the CTS signal
3: Includes 4 bytes overhead for 9-wire
Migrating from the MCP2140 to the
MCP2140A
(uA)
DD
shows the differences and enhancements of
.
required. For applications replacing the
MCP2140, components of the circuit can
be replaced to effectively remove the
waveshaping circuit. See Section 2.13
“Optical Interface”.
active after the UART Receive Buffer has
59 bytes. The Receive buffer supports the
reception of a 60th byte for systems that
have 0 delay between UART data bytes.
“cooked” protocol. This means that there
are a maximum of 60 data bytes per
frame.
PHACT = H
PHACT = L
DIFFERENCE BETWEEN
MCP2140 AND MCP2140A
High to Low
Low to High
Half Duplex Full Duplex
3.0V - 5.5V 2.0V - 5.5V
MCP2140
Required
7.3728
64
64
2200
29
29
60
or
(3)
(3)
High to Low
MCP2140A
Required
3.6864
60
64
64
only
407
Not
60
23
(1)
(2)
(3)
(3)
2.15
The MCP2140A is compatible with the PIC IrDA
Standard Stack Library routines for 16-bit PIC micro-
controllers. The application must use the Client Library
routines for the IrCOMM 9-wire Cooked protocol (for
Primary Device operation).
2.16
The IrDA Standards organization information can be
found at:
Some common manufacturers of optical transceivers
are shown in
TABLE 2-4:
Sharp
Infineon
Agilent
Vishay
Rohm
Company
http://www.irda.org
®
®
®
®
/Temic
The PIC IrDA Standard Stack
Library and the MCP2140A
References
Table
COMMON OPTICAL
TRANSCEIVER
MANUFACTURERS
www.sharpsma.com
www.infineon.com
www.agilent.com
www.vishay.com
www.rohm.com
2-4.
Company Web Site Address
© 2007 Microchip Technology Inc.