1FEATURES

• RF section

– Single-Chip 2.4-GHz RF Transceiver and

MCU

– Data Rates and Modulation Formats:

– 2-Mbps GFSK, 320-kHz Deviation

– 2-Mbps GFSK, 500-kHz Deviation

– 1-Mbps GFSK, 160-kHz Deviation

– 1-Mbps GFSK, 250-kHz Deviation

– 500-kbps MSK

– 250-kbps GFSK, 160-kHz Deviation

– 250-kbps MSK

– Excellent Link Budget, Enabling Long

Range Without External Front-Ends

– Programmable Output Power up to 4 dBm

– Excellent Receiver Sensitivity (–88 dBm at

2 Mbps)

– Suitable for Systems Targeting Compliance

With Worldwide Radio Frequency

Regulations: ETSI EN 300 328 and EN 300

440 Category 2 (Europe), FCC CFR47 Part

15 (US), and ARIB STD-T66 (Japan)

– Accurate RSSI Function

• Layout

– Few External Components

– Reference Designs Available

– 32-pin 5-mm × 5-mm QFN (8 General I/O

Pins) Package

• Low Power

– Active Mode RX: 22.5 mA

– Active Mode TX (0 dBm): 27 mA

– Power Mode 1 (4-μs Wake-Up): 1 mA

– Wide Supply-Voltage Range

– 3.3V LDO Output

– Supply Range: 2 V–3.6 V

– USB 5-V Regulator: 4 V–5.45 V

• Microcontroller

– High-Performance and Low-Power 8051

Microcontroller Core With Code Prefetch

– 32-KB Flash Program Memory

– 2 KB SRAM

– Hardware Debug Support

– Extensive Baseband Automation, Including

Auto-Acknowledgement and Address

Decoding

• Peripherals

– Full Speed USB 2.0

– 6 Endpoints (Endpoint 0 and 5 IN/OUT

Endpoints)

– Internal Pullup for D+

– 5-V to 3.3-V Regulator

– Powerful Two-Channel DMA

– General-Purpose Timers (One 16-Bit, Two

8-Bit)

– Radio Timer, 40-Bit

– IR Generation Circuitry

– Several Oscillators:

– 32-MHz XOSC

– 16-MHz RCOSC

– 32-kHz RCOSC

– 32-kHz Sleep Timer With Capture

– AES Security Coprocessor

– UART/SPI Serial Interface

– 8 General-Purpose I/O pins (6 × 4-mA and 2

× 20-mA Drive Strength)

– Watchdog Timer

– True Random-Number Generator

APPLICATIONS

• Proprietary 2.4-GHz Systems

• Human Interface Devices (USB Dongle)

• Consumer Electronics

DESCRIPTION

The CC2544 is an optimized system-on-chip (SoC) solution for USB applications with datarates upto 2Mbps built

with low bill-of-material cost. The CC2544 combines the excellent performance of a leading RF transceiver with a

single-cycle 8051 compliant CPU, 32-KB in-system programmable flash memory, up to 2-KB RAM, and many

other powerful features.

The CC2544 is compatible with the CC2541/CC2543/CC2545. It comes in a 5-mm × 5-mm QFN32 package, with

SPI/UART/USB interface. The CC2544 comes complete with reference designs from Texas Instruments.

The devices target wireless consumer and HID applications. The CC2544 is ideal for USB dongle applications.