Functional Overview
The CYRF69303 is a complete Radio System-on-Chip device, providing a complete RF system solution with a single device and a few discrete components. The CYRF69303 is designed to implement low-cost wireless systems operating in the worldwide 2.4 GHz Industrial, Scientific, and Medical (ISM) frequency band (2.400 GHz to 2.4835 GHz).

Features
■ 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 pin 31 and pin 37.

Intelligent
■ 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
■ 16-bit free running timer
■ Low power wakeup timer
■ 12-bit programmable interval timer with interrupts
■ Watchdog timer

Low Power
■ 21 mA operating current (Transmit at –5 dBm)
■ Sleep current less than 1 A
■ Operating voltage from 2.7 V to 3.6 V DC
■ Fast startup and fast channel changes
■ Supports coin cell operated applications

Reliable & Robust
■ Receive sensitivity typical –90 dBm
■ AutoRate™ - Dynamic Data Rate Reception
   ❐ Enables data reception for any of the supported bit rates automatically.
   ❐ DSSS (250 Kbps), GFSK (1 Mbps)
■ Operating temperature from 0 °C to 70 °C
■ Closed-loop frequency synthesis for minimal frequency drift

Simple Development
■ Auto transaction sequencer (ATS): MCU can remain in sleep state longer to save power
■ Framing, length, CRC16, and Auto ACK
■ Separate 16 byte transmit and receive FIFOs
■ Receive signal strength indication (RSSI)
■ Built-in serial peripheral interface (SPI) control while in Sleep Mode
■ Advanced development tools based on Cypress’s PSoC® tools
■ Flexible I/O
■ 2 mA source current on all GPIO pins. Configurable 8 mA or 50 mA/pin current sink on designated pins
■ Each GPIO pin supports high impedance inputs, configurable pull up, open drain output, CMOS/TTL inputs, and CMOS output
■ Maskable interrupts on all I/O pins

BOM Savings
■ Low external component count
■ Small footprint 40-pin QFN (6 mm × 6 mm)
■ GPIOs that require no external components
■ Operates off a single crystal

Applications
■ Wireless keyboards and mice
■ Presentation tools
■ Wireless gamepads
■ Remote controls
■ Toys
■ Fitness