Product details

Frequency 2379-2496 MHz Standard Proprietary 2.4 GHz Operating temperature range (C) -40 to 85 Rating Catalog Transmission principle GFSK, MSK
Frequency 2379-2496 MHz Standard Proprietary 2.4 GHz Operating temperature range (C) -40 to 85 Rating Catalog Transmission principle GFSK, MSK
VQFN (RGZ) 48 49 mm² 7 x 7
  • RF section
    • Single-Chip 2.4-GHz RF Transceiver and MCU
    • Supports 250 kbps, 500 kbps, 1 Mbps and 2 Mbps data rates
    • Excellent Link Budget, Enabling Long Range Without External Front-Ends
    • Programmable Output Power up to 4 dBm
    • Excellent Receiver Sensitivity (–90 dBm at 2 Mbps,
      –98 dBm at 250 kbps)
    • 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
    • Pin Out Suitable for Single Layer PCB Applications
    • Reference Designs Available
    • 48-pin 7-mm × 7-mm QFN (31 General I/O Pins) Package
  • Low Power
    • Active Mode RX Best Performance: 20.8 mA
    • Active Mode TX (0 dBm): 26.3 mA
    • Power Mode 1 (5 µs Wake-Up): 235 µA
    • Power mode 2 (sleep timer on): 0.9 µA
    • Power mode 3 (External interrupts): 0.4µA
    • Wide Supply Voltage Range (2V to 3.6V)
    • Full RAM and Register Retention in All Power Modes
  • Microcontroller
    • High-Performance and Low-Power 8051
      Microcontroller Core With Code Prefetch
    • 32-KB Flash Program Memory
    • 1 KB SRAM
    • Hardware Debug Support
    • Extensive Baseband Automation, Including Auto-Acknowledgement and
      Address Decoding
  • Peripherals
    • Two-Channel DMA with Access to all Memory Areas and Peripherals
    • General-Purpose Timers (One 16-Bit, Two 8-Bit)
    • Radio Timer, 40-Bit
    • IR Generation Circuitry
    • Several Oscillators:
      • 32MHz XOSC
      • 16MHz RCOSC
      • 32kHz XOSC/li>
      • 32kHz RCOSC
    • 32-kHz Sleep Timer With Capture
    • AES Security Coprocessor
    • UART/SPI/I2C Serial Interface
    • 31 General-Purpose I/O pins (3 × 20-mA Drive Strength, Remaining pins
      have 4 mA Drive Strength)
    • Watchdog Timer
    • True Random-Number Generator
    • ADC and Analog Comparator
  • RF section
    • Single-Chip 2.4-GHz RF Transceiver and MCU
    • Supports 250 kbps, 500 kbps, 1 Mbps and 2 Mbps data rates
    • Excellent Link Budget, Enabling Long Range Without External Front-Ends
    • Programmable Output Power up to 4 dBm
    • Excellent Receiver Sensitivity (–90 dBm at 2 Mbps,
      –98 dBm at 250 kbps)
    • 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
    • Pin Out Suitable for Single Layer PCB Applications
    • Reference Designs Available
    • 48-pin 7-mm × 7-mm QFN (31 General I/O Pins) Package
  • Low Power
    • Active Mode RX Best Performance: 20.8 mA
    • Active Mode TX (0 dBm): 26.3 mA
    • Power Mode 1 (5 µs Wake-Up): 235 µA
    • Power mode 2 (sleep timer on): 0.9 µA
    • Power mode 3 (External interrupts): 0.4µA
    • Wide Supply Voltage Range (2V to 3.6V)
    • Full RAM and Register Retention in All Power Modes
  • Microcontroller
    • High-Performance and Low-Power 8051
      Microcontroller Core With Code Prefetch
    • 32-KB Flash Program Memory
    • 1 KB SRAM
    • Hardware Debug Support
    • Extensive Baseband Automation, Including Auto-Acknowledgement and
      Address Decoding
  • Peripherals
    • Two-Channel DMA with Access to all Memory Areas and Peripherals
    • General-Purpose Timers (One 16-Bit, Two 8-Bit)
    • Radio Timer, 40-Bit
    • IR Generation Circuitry
    • Several Oscillators:
      • 32MHz XOSC
      • 16MHz RCOSC
      • 32kHz XOSC/li>
      • 32kHz RCOSC
    • 32-kHz Sleep Timer With Capture
    • AES Security Coprocessor
    • UART/SPI/I2C Serial Interface
    • 31 General-Purpose I/O pins (3 × 20-mA Drive Strength, Remaining pins
      have 4 mA Drive Strength)
    • Watchdog Timer
    • True Random-Number Generator
    • ADC and Analog Comparator

The CC2545 is an optimized system-on-chip (SoC) solution with data rates up to 2Mbps built with low bill-of-material cost. The CC2545 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 1-KB RAM, 31 General-Purpose I/O pins and many other powerful features. The CC2545 has efficient power modes with RAM and register retention below 1 µA, making it highly suited for low-duty-cycle systems where ultralow power consumption is required. Short transition times between operating modes further ensure low energy consumption.

The CC2545 is compatible with the CC2541/CC2543/CC2544. It comes in a 7-mm × 7-mm QFN48 package, with SPI/UART/I2C interface. The CC2545 comes complete with reference designs from Texas Instruments.

The device targets wireless consumer and HID applications. The CC2545 is tailored for peripheral devices such as wireless keyboards.

The CC2545 is an optimized system-on-chip (SoC) solution with data rates up to 2Mbps built with low bill-of-material cost. The CC2545 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 1-KB RAM, 31 General-Purpose I/O pins and many other powerful features. The CC2545 has efficient power modes with RAM and register retention below 1 µA, making it highly suited for low-duty-cycle systems where ultralow power consumption is required. Short transition times between operating modes further ensure low energy consumption.

The CC2545 is compatible with the CC2541/CC2543/CC2544. It comes in a 7-mm × 7-mm QFN48 package, with SPI/UART/I2C interface. The CC2545 comes complete with reference designs from Texas Instruments.

The device targets wireless consumer and HID applications. The CC2545 is tailored for peripheral devices such as wireless keyboards.

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Technical documentation

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Type Title Date
* Data sheet CC2545 System-on-Chip for 2.4-GHz RF Applications datasheet (Rev. B) 03 Feb 2013
* Errata CC2545 ERRATA NOTE 28 Mar 2012
* User guide CC2543, CC2544, CC2545 System-on-Chip Solution for 2.4-GHz Apps User's Guide (Rev. B) 18 Mar 2013
Application note CE Regulations for SRDs Operating in License-Free 2.4GHz/5GHz Bands-WiFi Devices 15 Apr 2020
Technical article An out-of-the-box Internet of Things: building a seamless and secure smart home network 12 Jun 2018
Technical article Thread vs. Zigbee – what’s the difference? 16 May 2018
Technical article Your microcontroller deserves a nap – designing “sleepy” wireless applications 28 Mar 2018
Technical article SimpleLink™ MCU SDKs: Breaking down TI Drivers 12 Apr 2017
User guide CC2543/44/45 Development Kit User’s Guide (Rev. B) 06 Jun 2013
Application note AN118 -- Flash programming of CC253x/4x devices 05 Sep 2012
Application note AN098 - Layout Review Techniques for Low Power RF Designs (Rev. A) 02 Aug 2012
More literature CC2545EMK Quick Start Guide 28 Jun 2012

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Debug probe

CC-DEBUGGER — Debugger and Programmer for RF System-on-Chips

The CC Debugger is a small programmer and debugger for the TI Low Power RF System-on-Chips. It can be used together with IAR Embedded Workbench for 8051 (version 7.51A or later) for debugging and SmartRF Flash Programmer for flash programming. The CC Debugger can also be used for controlling (...)

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Code example or demo

CC2541/43/44/45 Peripherals Software Examples

SWRC257.ZIP (763 KB)
Support software

CC254x Proprietary Mode Packet Error Rate Test (Rev. B)

SWRC251B.ZIP (232 KB)
Calculation tool

SMARTRFTM-STUDIO — SmartRF Studio

SmartRF™ Studio is a Windows application that helps designers of RF systems to easily evaluate the radio at an early stage in the design process for all TI CC1xxx and CC2xxx low-power RF devices. It simplifies generation of the configuration register values and commands, as well as practical (...)
Design tool

SIMPLELINK-2-4GHZ-DESIGN-REVIEWS — Hardware design reviews for SimpleLink™ CC2xxx devices

The SimpleLink hardware design review process provides a way to get in touch, one-on-one, with a subject matter expert that can help review your design and provide valuable feedback. A simple 3-step process for requesting a review as well as links to relevant technical documentation and resources (...)
Package Pins Download
VQFN (RGZ) 48 View options

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

Support & training

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