DM303006 Microchip Technology, DM303006 Datasheet - Page 23

• Manufacturer Part Number: DM303006
• Description: KIT EVALUATION KEELOQ
• Manufacturer: Microchip Technology
• Series: KEELOQ®r
• Type: KeeLoq®r

Specifications of DM303006

• Silicon Manufacturer: Microchip
• Kit Contents: Main Board, 2 Transmitters, Cables And Power Supply
• Tool / Board Applications: General Purpose MCU, MPU, DSP, DSC
• For Use With: KeeLoq
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• For Use With/related Products: Keeloq Encoders & Decoders
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Request inventory verification / Request inventory verification

7.1
The Demo Board contains an ASK Radio Receiver
module that serves the Decoders as well as the Main
Processor.
The module is a standard thick-film hybrid circuit mod-
ule tuned by the manufacturer to 433.92 MHz. The
demodulated digital output signal may be directly fed
into any microcontroller I/O pin.
FIGURE 7-2:
Jumper JP1 allows the radio receiver output to be dis-
connected from the decoders. This permits monitoring
the receiver output on an oscilloscope or injecting an
encoder’s digital output directly into the decoder
7.2
The Decoder area is subdivided into three sections:
1.
2.
3.
Each section has a Learn button, an RC oscillator cir-
cuit and a set of LEDs to show the Decoder’s output
status but they share the radio receiver output at JP1.
A non-volatile memory is available to the software
decoders; 93C46 EEPROM, socket U3. Voltage super-
vising (Brown out Reset) circuitry and power supply are
common with the Main Processor.
The HCS512 and HCS515 decoders are connected to
the Main Processor with separate pairs of clock and
data lines such that they may be independently config-
ured. Although the current firmware release does not
support it, the decoder coprocessor functionality could
be demonstrated.
 2001 Microchip Technology Inc.
Software Decoders
HCS512 Decoder
HCS515 Decoder
Radio Receiver
Demonstration Decoders
Jumper JP1
THE RADIO RECEIVER
K
EE
Radio Receiver
L
OQ
®
EVALUATION KIT II USER’S GUIDE
This type of radio receiver module is common, low cost
and recommended to those without RF design capabil-
ities. The pin-out is standard. Thus, it may be easily
replaced with similar models accommodating various
frequencies, sensitivity levels, modulation methods
(ASK vs. FSK) as well as complying to various interna-
tional certification standards.
DS41155A-page 21