1FEATURES
2345• RF/Layout
– 2.4-GHz IEEE 802.15.4 Compliant RF
Transceiver
– Excellent Receiver Sensitivity and
Robustness to Interference
– Programmable Output Power Up to 4.5 dBm
– Few External Components
– Only a Single Crystal Needed for
Asynchronous Networks
– 6-mm × 6-mm QFN40 Package
– Suitable for Systems Targeting Compliance
With Worldwide Radio-Frequency
Regulations: ETSI EN 300 328 and EN 300
440 (Europe), FCC CFR47 Part 15 (US), and
ARIB STD-T-66 (Japan)
• USB
– USB 2.0 Certified Full Speed Device (12
Mbps)
– 5 Highly Flexible Endpoints
– 1-KB Dedicated FIFO
– DMA Access to FIFO
– No 48-MHz Crystal Required
• Low Power
– Active Mode RX (CPU Idle): 24 mA
– Active Mode TX at 1 dBm (CPU Idle): 29 mA
– Power Mode 1 (4 ms Wake-Up): 0.2 mA
– Power Mode 2 (Sleep Timer Running): 1 mA
– Power Mode 3 (External Interrupts): 0.4 mA
– Wide Supply-Voltage Range (2 V–3.6 V)
• Microcontroller
– High-Performance and Low-Power 8051
Microcontroller Core With Code Prefetch
– 256-KB or 128-KB In-System-Programmable
Flash
– 8-KB RAM With Retention in All Power
Modes
– Hardware Debug Support
• Peripherals
– Powerful Five-Channel DMA
– IEEE 802.15.4 MAC Timer, General-Purpose
Timers (One 16-Bit, Two 8-Bit)
– IR Generation Circuitry
– 32-kHz Sleep Timer With Capture
– CSMA/CA Hardware Support
– Accurate Digital RSSI/LQI Support
– Battery Monitor and Temperature Sensor
– 12-Bit ADC With Eight Channels and
Configurable Resolution
– AES Security Coprocessor
– Two Powerful USARTs With Support for
Several Serial Protocols
– 21 General-Purpose I/O Pins
(19 × 4 mA, 2 × 20 mA)
– Watchdog Timer
• Development Tools
– CC2531 Development Kit
– Certified CC2531 USB Dongle Reference
Design
– SmartRF™ Software
– Packet Sniffer
– IAR Embedded Workbench® Software
Available

APPLICATIONS
• USB Upgradable 2.4-GHz IEEE 802.15.4
Systems
• RF4CE Remote Control Target for TV or STB
• PC Peripherals
• ZigBee® Systems
• Home/Building Automation
• Lighting Systems
• Industrial Control and Monitoring
• Low-Power Wireless Sensor Networks
• Consumer Electronics
• Health Care

DESCRIPTION
The CC2531 is a USB enabled true system-on-chip (SoC) solution for IEEE 802.15.4, ZigBee and RF4CE
applications. It enables USB dongles or USB upgradable network nodes to be built with low total bill-of-material
costs. The CC2531 combines the performance of a leading RF transceiver with an industry-standard enhanced
8051 MCU, in-system programmable flash memory, 8-KB RAM, and many other powerful features. The CC2531
has various operating modes, making it suited for systems where ultralow power consumption is required. Short
transition times between operating modes further ensure low energy consumption. Source code for USB HID and
CDC libraries and examples are downloadable from the CC2531 product page on www.ti.com.
Combined with the industry-leading and golden-unit-status ZigBee protocol stack ( Z-Stack™) from Texas
Instruments, the CC2531 provides a robust and complete ZigBee USB dongle or firmware upgradable network
node.
Combined with the golden-unit-status RemoTI™ stack from Texas Instruments, the CC2531 provides a robust
ZigBee RF4CE remote-control target for USB dongle or TV/STB implementations.