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K EE L OQ? 3 Development Kit Overview
The controller features various connectivity elements. The supplied receiver card
features a Microchip rfRXD0420 ASK radio receiver chip used in the 433.92 MHz ISM
band. Because the receiver is a separate card with a PICtail? connector ([ 4 ] in
Figure 1-1), the user can replace the receiver card with any custom radio receiver unit.
The heart of the controller board is the Microchip PIC16F886 microcontroller ([ 9 ] in
Figure 1-1). The controller features a PICkit 2 compatible connector header ([ 2 ] in
Figure 1-1) that allows in-circuit programming using the PICkit 2 microcontroller
programmer/debugger. Any other Microchip programmer/debugger tool can be used,
provided that:
? The programmer/debugger supports the PIC16F886 (please check for the latest
firmware update for the programmer).
? Some in-circuit debuggers use an RJ-11 connector. You will need an RJ-11 to
ICSP? adapter (Microchip part number AC164110).
To demonstrate serial communication, the board can be connected to the Microchip
PICkit Serial Analyzer module through the PICkit serial header ([ 3 ] in Figure 1-1). The
controller firmware is configured to support I 2 C slave communication (the PICkit Serial
module should be configured as the master).
Also, for user interaction with the board, the following elements are present on the
board:
? a LCD display (2* 16 characters) ([ 8 ] in Figure 1-1)
? 3 push buttons ([ 7 ] in Figure 1-1)
? 4 LED’s ([ 6 ] in Figure 1-1)
The control board can be powered in one of the following ways:
? Using a 9-volt adapter connected to the board’s power socket ([ 1 ] in Figure 1-1)
? PICkit 2 supplied power
? PICkit Serial Analyzer supplied power
1.5.2
Receiver Board
The receiver board features the Microchip rfRXD0420, low-cost, high-performance
ASK receiver IC. The module is suitable for:
?
?
?
?
Wireless remote command and control
Remote Keyless Entry (RKE)
Security Systems
Low-power telemetry applications
The module characteristics are:
? Single channel, fixed frequency of 433.92 MHz
? ASK modulation
? Baud rate: 4800bps
For more information on the rfRXD0420 receiver module, please refer to the technical
brief TB070.
? 2009 Microchip Technology Inc.
DS41378A-page 9
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制造商:PacTec 功能描述:Case, Plastic; ABS; PC Bone; 11.46 in.; 3.38 in.; 10.4 in.; UL 94-HB Rated 制造商:PacTec 功能描述:ENCLOSURE, DESKTOP, PLASTIC, BONE; Enclosure Type:Desktop; Enclosure Material:Plastic; Body Color:Bone; External Height - Imperial:3.38"; External Height - Metric:86mm; External Width - Imperial:10.4"; External Width - Metric:264mm ;RoHS Compliant: Yes