Low Power Low Voltage Radio Frequency Transmitter and Low Cost Receiver from Freescale

Full schematics,software and documentation available for free. The fixed code protocol demo uses a Freescale MC33696 PLL Tuned UHF transceiver, this is plugged to the MCU port of a DEMO9S08SH8. The whole system is the receiver. In the transmitter you have a VKSP-KEYFOB. This contains an ultra low power 9S08QE8 MCU. The transmitter (all the system hardware) consumes .27 uA in stop mode.

Category:

Science & Technology

Tags:

• rf
• radio
• frequency
• transmitter
• receiver
• transceiver
• cheap
• microcontroller
• reference
• design
• UHF
• fob
• keyfob
• key
• freescale
• 9s08
• hc08
• low
• voltage
• battery
• power
• training
• wireless

[Nacuri09]

The Fixed Code Demo is not using VKSP, the only thing in common is the HW and some Low Level Drivers, but the application is completely different. Total VKSP project sizes are: MC9S08SH8 Receiver Flash 4983 bytes, RAM 369 bytes 9S08QE8 transmitter Flash 4063 bytes, RAM 207 bytes As for the Fixed code implementation MC9S08SH8 Receiver Flash 3003 bytes, RAM 166 bytes 9S08QE8 Transmitter Flash 1472 bytes, RAM 155 bytes MC9RS08KA Transmitter Flash 894 bytes, RAM 33 bytes

[ssjah]

Are you using VKSP(variable key security protocol)? What is the code size of VKSP?