1.1 Features 1
• Microcontroller
– Powerful ARM® Cortex®-M3 With Code Prefetch
– Up to 32-MHz Clock Speed
– 512KB, 256KB or 128KB of In-System-
Programmable Flash
– Supports On-Chip Over-the-Air Upgrade (OTA)
– Supports Dual ZigBee Application Profiles
– Up to 32KB of RAM (16KB With Retention in All
Power Modes)
– cJTAG and JTAG Debugging
• RF
– 2.4-GHz IEEE 802.15.4 Compliant RF
Transceiver
– Excellent Receiver Sensitivity of –97 dBm
– Robustness to Interference With ACR of 44 dB
– Programmable Output Power up to 7 dBm
• Security Hardware Acceleration
– Future Proof AES-128/256, SHA2 Hardware
Encryption Engine
– Optional – ECC-128/256, RSA Hardware
Acceleration Engine for Secure Key Exchange
– Radio Command Strobe Processor and Packet
Handling Processor for Low-Level MAC
Functionality
• Low Power
– Active-Mode RX (CPU Idle): 20 mA
– Active-Mode TX at 0 dBm (CPU Idle): 24 mA
– Power Mode 1 (4-μs Wake-Up, 32-KB RAM
Retention, Full Register Retention): 0.6 mA
– Power Mode 2 (Sleep Timer Running, 16-KB
RAM Retention, Configuration Register
Retention): 1.3 μA
– Power Mode 3 (External Interrupts, 16-KB RAM
Retention, Configuration Register Retention):
0.4 μA
– Wide Supply-Voltage Range (2 V to 3.6 V)
• Peripherals
– μDMA
– 4 × General-Purpose Timers
(Each 32-Bit or 2 × 16-Bit)
– 32-Bit 32-kHz Sleep Timer
– 12-Bit ADC With 8 Channels and Configurable
Resolution
– Battery Monitor and Temperature Sensor
– USB 2.0 Full-Speed Device (12 Mbps)
– 2 × SPI
– 2 × UART
– I2C
– 32 General-Purpose I/O Pins
(28 × 4 mA, 4 × 20 mA)
– Watchdog Timer
• Layout
– 8-mm × 8-mm QFN56 Package
– Robust Device for Industrial Operation up to
125°C
– Few External Components
– Only a Single Crystal Needed for Asynchronous
Networks
• Development Tools
– CC2538 Development Kit
– Reference Design Certified Under FCC and
ETSI Regulations
– Full Software Support for Contiki/6LoWPAN,
Smart Grid, Lighting, and ZigBee Home
Automation With Sample Applications and
Reference Designs Available
– Code Composer Studio™
– IAR Embedded Workbench® for ARM
– SmartRF™ Studio
– SmartRF Flash Programmer

1.2 Applications
• Smart Grid and Home Area Network
• Home and Building Automation
• Intelligent Lighting Systems
• Wireless Sensor Networks
• Internet of Things

1.3 Description
The CC2538xFnn is the ideal wireless microcontroller System-on-Chip (SoC) for high-performance ZigBee
applications. The device combines a powerful ARM Cortex-M3-based MCU system with up to 32KB onchip
RAM and up to 512KB on-chip flash with a robust IEEE 802.15.4 radio. This enables the device to
handle complex network stacks with security, demanding applications, and over-the-air download. Thirtytwo
GPIOs and serial peripherals enable simple connections to the rest of the board. The powerful
hardware security accelerators enable quick and efficient authentication and encryption while leaving the
CPU free to handle application tasks. The multiple low-power modes with retention enable quick startup
from sleep and minimum energy spent to perform periodic tasks. For a smooth development, the
CC2538xFnn includes a powerful debugging system and a comprehensive driver library. To reduce the
application flash footprint, CC2538xFnn ROM includes a utility function library and a serial boot loader.
Combined with the robust and comprehensive Z-Stack software solutions from TI, the CC2538 provides
the most capable and proven ZigBee solution in the market.