MCP2140DM-TMPSNS Microchip Technology, MCP2140DM-TMPSNS Datasheet - Page 22

• Manufacturer Part Number: MCP2140DM-TMPSNS
• Description: BOARD DEMO FOR MCP2140
• Manufacturer: Microchip Technology

Specifications of MCP2140DM-TMPSNS

• Main Purpose: Interface, IrDA
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: MCP2140
• Primary Attributes: IrDA Controller with PIC18F MCU and Temp Sensor Temp
• Secondary Attributes: Set up as a Data Logger
• Processor To Be Evaluated: MCP2140
• Interface Type: ICSP
• Silicon Manufacturer: Microchip
• Silicon Core Number: MCP2140
• Kit Application Type: Sensing - Temperature
• Application Sub Type: Temperature Sensor
• Kit Contents: Board
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: MCP2140DM-TMPSNSR; MCP2140DM-TMPSNSR

MCP2140 IrDA
DS51487A-page 18
2.4.3.2.2
1. Ensure 3 AAA batteries are properly inserted into the battery holder.
2. Connect JP1 (closed position). The power LED (D5) will turn on. After a few
3. Depress the RESET and S2 buttons, then release the RESET button (keep the
4. Release the S2 button.
5. With both devices on a flat surface, place the MCP2140 IrDA Standard Wireless
6. If the PC is configured to show the IR icon in the system tray, a single IR LED
7. Start the HyperTerminal program by using the saved setting from Section
8. Ensure that the HyperTerminal session indicates “Connected” (lower-left in
9. Place the mouse cursor over the IR icon in the system tray. The message
10. Type any number (0-9) in the HyperTerminal window. The MCP2140 IrDA Stan-
11. The PC HyperTerminal window should receive a string of data about every
12. Device U4 is the TC1047A Temperature Sensor device. The output is connected
13. Disconnect (close) the HyperTerminal session. The DSR and CTS LEDs will
®
Note:
Standard Wireless Temp Sensor Demo Board
seconds, the PHACT LED (D4) will also turn on, indicating that the MCP2140 is
in the NDM (Non-Discovery Mode) state.
S2 button depressed).
Temperature Sensor Demo Board about 25 cm (10”) away from the PC (dark red
window at the front or sides of the PC) toward the two clear LEDs (D1, D6) on
the MCP2140 IrDA Standard Wireless Temperature Sensor Demo Board.
icon will be displayed. Placing the mouse cursor over this icon will display the
message “MCP2140 A5 is in range”, where “MCP2140 A5” is the Device ID of
the MCP2140.
2.4.3.1 “Configuring HyperTerminal”. When HyperTerminal starts, it is in the
connected state. To disconnect, click on the telephone icon (4th icon from left on
toolbar). To connect, click on the telephone icon (3rd icon from left). Depending
on the current state of the HyperTerminal session, only one of the two telephone
icons will be active (the other will be grayed out).
HyperTerminal window) and that the icon in the system tray changes to two IR
LEDs facing each other and “talking”.
displayed now says “Wireless link with MCP2140 A5 at 9600 bps”. This shows
that a link is now established for data communication, and that the IR
communication rate is 9600 bps (even though the HyperTerminal program is
“talking” to the driver at 115200, the IrDA standard hardware is communicating
at the rate negotiated with the MCP2140).
dard Wireless Temperature Sensor Demo Board requires a receive byte before
transmitting it’s data. This is due to the requirement of most PDAs needing to
transmit a data byte before opening the IR Link. The data byte is sent as it is
typed. At this time, the DSR (D2), CTS (D3) and PHACT (D4) LEDs are turned
off.
second. This data string has the format “Temp = xx”, where xx is the measured
temperature in °C.
to an A/D channel of the PIC18F1320. Changing the temperature of this device
will effect the ”temperature” value that is transmitted to the Primary device.
immediately turn off and the PHACT LED will turn on in about 10 seconds.
Temperature value transmitted by the PIC18F1320 will be dependent on
battery voltage (see Section 2.3.2.2 ““Transmit Temperature” Program
Description”).
Operating the “Transmit Temperature” Program
 2004 Microchip Technology Inc.