MCP2120-I/SL Microchip Technology, MCP2120-I/SL Datasheet - Page 13

• Manufacturer Part Number: MCP2120-I/SL
• Description: IC ENCODR/DECODR 2.5V IR 14-SOIC
• Manufacturer: Microchip Technology
• Type: Infrared Encoder/Decoderr

Specifications of MCP2120-I/SL

• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Voltage - Supply, Analog: 2.5 V ~ 5.5 V
• Voltage - Supply, Digital: 2.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Ic Function: Infrared Encoder/Decoder
• Supply Voltage Range: 2.5V To 5.5V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: SOIC
• No. Of Pins: 14
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MCP212XDM - BOARD DEVELOPMENT IRDA
• Applications: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

FIGURE 1-2:
© 2009 Microchip Technology Inc.
This jumper isolates the
PIC19’s V
MCP2120/22 V
Section A.6 “Board - Power
Layer”)
JP2
V
V
DD
DD
planes are connected
planes are issolated
DD
from the
DD
plane (see
1.3.1
Figure 1-2 shows the jumpers used to control the clock source, the power source, and
the optical transceiver used.
Jumper JP1 connects the generated clock signal from the PIC18F65J50’s ECCP1 pin
to the MCP2120’s OSC2 pin. This allows the board not to need the MCP2120’s crystal
circuitry.
Jumper JP2 connects the board’s two power planes. The MCP2120/22 Developer’s
Board has a power plane for the PIC18F65J50 and related circuitry, and a second
power plane for all other circuitry. Removing the jumper allows the MCP2120/22 portion
to operate through the full voltage range of the MCP2120 (2.5V to 5.5V) or MCP2122
(1.8V to 5.5V). When JP2 is connected, then the maximum voltage is restricted to the
maximum voltage of the PIC18F65J50 device (3.6V). See A.6 “Board - Power Layer”
for the power plane layout.
Jumpers JP1C1 and JP2C1 are used to connect the default installed optical transceiver
to the MCP2120/22’s RXPD and TXIR pins. There are footprints for two other optical
transceiver implementations. If either of those implementations are installed, then the
jumpers may be switched to the desired optical transceiver.
MCP2120/22 SELECTING SOURCES
Selecting Clock Source, Power Source, and Optical Transceiver
Interface Jumper Descriptions
This jumper isolates the PIC18
CCP pin (Clock) from the
MCP2120/22 crystal circuit.
JP1
PIC18 CCP1 connected
to MCP2122 16XCLK pin
or MCP2020 OSC1 pin
MCP2120/22 can use
crystal circuit (Y2)
These two jumpers select the optical
transceiver logic. Both jumpers should
connect the same pin positions.
JP1x1 and JP2x1
Optical Transceiver Not connected
to MCP2120/22 IR Interface
Optical Transceiver connected to
MCP2120/22 IR Interface
Product Overview
DS51842A-page 9