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 via the SPI interface between both functions.

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 µA

■ Operating voltage from 4.0 V to 5.25 V DC

■ Fast startup and fast channel changes

■ Supports coin-cell operated applications

Reliable and 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

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