MCP2030DM-TPR Microchip Technology, MCP2030DM-TPR Datasheet - Page 12

• Manufacturer Part Number: MCP2030DM-TPR
• Description: BOARD DEMO PICTAIL MCP2030
• Manufacturer: Microchip Technology
• Type: Front Endr

Specifications of MCP2030DM-TPR

• Frequency: 125kHz
• For Use With/related Products: MCP2030
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Not applicable / Not applicable

2.2
FIGURE 2-2:
MCP2030 Bidirectional Communication Demo Kit User’s Guide
DS51637A-page 8
OPERATIONAL OVERVIEW
10 bit LF Command
from Base Station
Demodulated data output
from MCP2030
Transponder Data Stream:
Header + 32 ID bits + 16 RSSI bits + 6 Parity bits + Stop bit
= Header + 54 Data bits + 1 Stop bit
When the MCP2030 Base Station unit is powered on using a 9 V power supply and the
MCP2030 transponder demo board is powered-on using a 3V lithium battery, the
system works as follows:
(a) The Base Station unit transmits an LF command. Requesting the Transponder’s ID
and RSSI data.
(b) When the Transponder receives the LF command, it transmits its 32-bit ID and RSSI
data via the UHF (434 MHz) link.
(c) When the Base Station unit receives the response from the Transponder, it displays
the Transponder ID and RSSI value on the LCD.
(d) The system repeats steps (a) through (c) as long as the power is supplied.
(e) If the button switch SW3 or SW4 on the Transponder is pressed, the Transponder
transmits the button data (SW3: Unlock door, SW4: Lock door). The Base Station unit
displays the button message on the LCD.
Figure 2-2
Transponder units.
demodulated data by the MCP2030.
Base Station Command and Transponder Response.
values
MCP3421
converts
RSSI to digital
shows the communication sequence between the Base Station and the
Figure 2-3
Change back
MCP2030 configuration
register for
demodulated output
shows the Base Station’s LF command and the
Continuous LF for
RSSI Sample
ADC conversion
Completed here
Command to
MCP2030
MCU Sends
a Soft Reset
© 2006 Microchip Technology Inc.
at pin 3
of U3
at pin 9
of U1
at pin 8
of U3
at pin 5
of U3