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CYRF69303: Programmable Radio-on-Chip LPstar | Cypress Semiconductor

CYRF69303: Programmable Radio-on-Chip LPstar

Last Updated: 
May 26, 2017

Programmable Radio-on-Chip LPstar


  • Radio System-on-Chip with built-in 8-bit MCU in a single device.
  • Operates in the unlicensed worldwide Industrial, Scientific, and Medical (ISM) band (2.400 GHz to 2.483 GHz).
  • On Air compatible with second generation radio WirelessUSB™ LP and PRoC LP.
  • Pin-to-pin compatible with PRoC LP except the Pin31 and Pin37.


  • M8C based 8-bit CPU, optimized for human interface devices (HID) applications
  • 256 bytes of SRAM
  • 8 Kbytes of flash memory with EEPROM emulation
  • In-system reprogrammable through D+/D– pins
  • CPU speed up to 12 MHz
  • For more, see pdf

 Functional Description

PRoC LPstar devices are integrated radio and microcontroller functions in the same package to provide a dual-role single-chip solution.

Communication between the microcontroller and the radio is through the radio’s SPI interface.