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Product details

Parameters

Protocols Bluetooth 5.0 Features LE 1M PHY Flash (KB) 256 CPU core 8051 Type Wireless MCU RAM (KB) 8 GPIO 23 Peripherals 12-bit ADC 8-channel, 2 SPI, 2 UART, 4 timers, I2C Security Cryptographic acceleration, Debug security, Device identity, Software IP protection Sensitivity (best) (dBm) -94 Operating temperature range (C) -40 to 105 Rating Automotive open-in-new Find other Bluetooth products

Package | Pins | Size

VQFN (RHA) 40 36 mm² 6 x 6 open-in-new Find other Bluetooth products

Features

  • RF
    • 2.4-GHz Low Energy Compliant and Proprietary RF Wireless MCU
    • Supports Data Rates of 250 kbps, 500 kbps, 1 Mbps, and 2 Mbps
    • Excellent Link Budget, Enabling Long-Range Applications Without External Front End
    • Programmable Output Power up to 0 dBm
    • Excellent Receiver Sensitivity (–94 dBm at
      1 Mbps), Selectivity, and Blocking Performance
    • Suitable for Systems Targeting Compliance With Worldwide Radio Frequency Regulations: ETSI EN 300 328 and EN 300 440 Class 2 (Europe), FCC CFR47 Part 15 (US), and ARIB STD-T66 (Japan)
  • Layout
    • Few External Components
    • 6 mm × 6 mm QFN-40 Package
  • Low Power
    • Active-Mode RX Down to: 18.3 mA
    • Active-Mode TX (0 dBm): 18.6 mA
    • Power Mode 1 (4-µs Wake-Up): 270 µA
    • Power Mode 2 (Sleep Timer On): 1 µA
    • Power Mode 3 (External Interrupts): 0.5 µA
    • Wide Supply-Voltage Range (2 V to 3.6 V)
  • Microcontroller
    • High-Performance and Low-Power 8051 Microcontroller Core With Code Prefetch
    • 256KB In-System Programmable Flash
    • 8KB of RAM With Retention in All Power Modes
    • Hardware Debug Support
    • Extensive Baseband Automation, Including Auto-Acknowledgment and Address Decoding
    • Retention of All Relevant Registers in All Power Modes
  • Peripherals
    • Powerful Five-Channel DMA
    • IR Generation Circuitry
    • General-Purpose Timers (One 16-Bit, Two 8-Bit)
    • 32-kHz Sleep Timer With Capture
    • Accurate Digital RSSI 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
    • 23 General-Purpose I/O Pins
      (21 × 4 mA, 2 × 20 mA)
    • I2C interface
    • 2 I/O Pins Have LED Driving Capabilities
    • Watchdog Timer
    • Integrated High-Performance Comparator
  • Development Tools
    • CC2541 Evaluation Module
    • SmartRF™ Software
    • IAR Embedded Workbench™ Available
  • v4.0 Compliant Protocol Stack for Single-Mode BLE Solution
    • Complete Power-Optimized Stack, Including Controller and Host
      • GAP – Central, Peripheral, Observer, or Broadcaster (Including Combination Roles)
      • ATT / GATT – Client and Server
      • SMP – AES-128 Encryption and Decryption
      • L2CAP
    • Sample Applications and Profiles
      • Generic Applications for GAP Central and Peripheral Roles
      • Proximity, Accelerometer, Simple Keys, and Battery GATT Services
      • More Applications Supported in BLE Software Stack
    • Multiple Configuration Options
      • Single-Chip Configuration, Allowing Applications to Run on CC2541-Q1
      • Network Processor Interface for Applications Running on an External Microcontroller
    • BTool–Windows PC Application for Evaluation, Development, and Test
    • Over the Air Update Capable
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Description

The CC2541-Q1 is a power-optimized true Wireless MCU solution for both low energy and proprietary 2.4-GHz applications. This device enables the building of robust nework nodes with low total bill-of-material costs. The CC2541-Q1 combines the excellent performance of a leading RF transceiver with an industry-standard enhanced 8051 MCU, in-system programmable flash memory, 8KB of RAM, and many other powerful supporting features and peripherals. The CC2541-Q1 is highly suited for systems in which ultralow power consumption is required, which is specified by various operating modes. Short transition times between operating modes further enable low power consumption.

The CC2541-Q1 comes in a 6 mm x 6 mm QFN40 package.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 41
Type Title Date
* Datasheet CC2541-Q1 SimpleLink Bluetooth Low Energy Wireless MCU for Automotive datasheet Jun. 11, 2014
* Errata CC2541-Q1 Errata Note Apr. 10, 2015
* User guide CC253x/4x User's Guide (Rev. F) Apr. 10, 2014
Application note How to Certify Your Bluetooth Product (Rev. D) Sep. 10, 2020
Technical articles Exploring connectivity trends for Bluetooth® Low Energy in the car Feb. 18, 2020
User guide CC2540/41 Bluetooth Low Energy Software Developer’s Guide (Rev. I) Jan. 27, 2020
Technical articles Bluetooth® Low Energy shifts gears for car access Jul. 15, 2019
Technical articles Top 3 design challenges that the new generation of SimpleLink™ Wi-Fi® devices will help you overcome Feb. 21, 2019
Technical articles Exploring the impact of IoT on innovation Jul. 17, 2018
User guide Getting started with Bluetooth low energy CC2541, CC2541-Q1, CC2540, & CC2540T f Jul. 11, 2017
Application note AN119 - Using an External 32kHz Clock to Drive a CC254x Chip (Rev. A) Dec. 12, 2016
Application note Bluetooth Low Energy Beacons (Rev. A) Oct. 19, 2016
User guide CC2541 Mini Development Kit Quick Start Guide (Rev. C) Oct. 19, 2016
More literature Dual-mode Bluetooth CC256x solutions (Rev. C) Feb. 03, 2016
User guide CC2540/41 Bluetooth Low Energy Software Developer’s Guide (Rev. G) Sep. 04, 2015
User guide Bluetooth® low energy CC2541 Advanced Remote Control Kit (Rev. A) Jun. 23, 2015
User guide CC2541 Advanced Remote Control Quick Start Guide (Rev. B) Jun. 23, 2015
White paper Three Flavors of Bluetooth: Which One to Choose? Mar. 25, 2014
White paper Wireless connectivity for the Internet of Things (IoT) with MSP430 MCUs Mar. 13, 2014
Application note AN100 - Crystal Selection Guide (Rev. C) Nov. 26, 2013
More literature TI: The IoT technology leader Nov. 01, 2013
More literature The Evolution of the Internet of Things Sep. 09, 2013
White paper Enabling secure portable medical devices with TI’s MSP430™ MCU Jun. 04, 2013
User guide CC2541 SensorTag Quick Start Guide (Rev. B) Apr. 17, 2013
User guide CC2540 USB Evaluation Kit Quick Start Guide Mar. 20, 2013
Application note AN120 -- Using CC2590 Front End with CC2541 Mar. 13, 2013
Application note DN035 -- Antenna Quick Guide (Rev. A) Feb. 12, 2013
Application note DN041 -- Using CC253X or CC254X with Dipole PCB Antenna Jan. 24, 2013
User guide CC2540 and CC2541 Mini Development Kit User's Guide (Rev. C) Jan. 11, 2013
Application note AN081 -- Johanson Technology Balun Optimized for CC253X, CC254X, CC257X, CC853X (Rev. B) Nov. 06, 2012
Application note AN118 -- Flash programming of CC253x/4x devices Sep. 05, 2012
Application note AN098 - Layout Review Techniques for Low Power RF Designs (Rev. A) Aug. 02, 2012
Application note AN092 -- Measuring Bluetooth Low Energy Power Consumption (Rev. A) Apr. 19, 2012
Application note AN097 - Current Savings in CC254x Using the TPS62730 (Rev. B) Feb. 08, 2012
User guide CC2541-TPS62730EM Reference Design Feb. 07, 2012
More literature Bluetooth Low Energy 4-page brochure (Rev. A) Jan. 09, 2012
Application note AN107 - Murata Balun for CC253x and CC254x, LFB182G45BG2D280 (Rev. A) Oct. 26, 2011
Application note AN103 -- Basic RF Testing of CCxxxx Devices Aug. 08, 2011
Application note DN034 -- YAGI 2.4 GHz PCB Antenna Oct. 14, 2010
Application note AN058 -- Antenna Selection Guide (Rev. B) Oct. 06, 2010
Application note DN031 -- CC-Antenna-DK Documentation and Antenna Measurements Summary Aug. 26, 2010

Design & development

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

Hardware development

DAUGHTER CARD Download
99
Description

The CC2541 Evaluation Module Kit contains two CC2541 Bluetooth low energy Evaluation Modules, which can be used either as standalone modules (requires a power source and a simple carrier board like the SoC Battery Board, or connected to e.g. the SmartRF05EB Evaluation Boards (included in the (...)

Features

The CC2541EMK includes:

  • 2 x CC2541EM Evaluation Modules
  • 2 x 2.4 GHz Antennas
  • Documentation

 

DEBUG PROBE Download
49
Description

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 (...)

Features

Contents in the box:

  • CC Debugger
  • Mini USB cable
  • 10-pin flat cable with 2x5 2.54mm connector
  • 10-pin flat cable with 2x5 1.27mm connector
  • Converter board 2.54mm-1.27mm connector
  • Documentation

CC-Debugger can be used to program and debug the following 8051-based system-on-chips from Texas Instruments:

  • CC1110 (...)

DEVELOPMENT KIT Download
99
Description
The CC2541DK-MINI development kit provides a working reference design for software development of single-mode Bluetooth low energy (BLE) applications based on the Texas Instruments CC2541. The included "keyfob" board operates as a BLE peripheral device, and contains modifiable software that can be (...)
Features

The kit contains the following hardware components:


1 x CC2540 USB Dongle: This is the device that will be acting as the BLE Master. It connects to a Windows PC’s USB port, and is pre-loaded with the master demo application software.


1 x CC2541 Keyfob: This is the device that will be acting as the BLE (...)

Software development

CODE EXAMPLE OR DEMO Download
SWRC257.ZIP (763 KB)
DRIVER OR LIBRARY Download
Bluetooth Low Energy software stack
BLE-STACK This royalty-free BLE-Stack for TI’s SimpleLink™ Bluetooth® Low Energy family of ARM® Cortex®-M3 based wireless microcontrollers (MCUs) includes full-featured Bluetooth 4.2 and Bluetooth 5 certified stacks with all necessary software, sample applications and documentation to (...)
SUPPORT SOFTWARE Download
SWRC251B.ZIP (232 KB)
SUPPORT SOFTWARE Download
SWRC258Q.ZIP (34446 KB)

Design tools & simulation

CALCULATION TOOL Download
SmartRF Protocol Packet Sniffer
PACKET-SNIFFER The SmartRF Packet Sniffer is a PC software application that can display and store radio packets captured by a listening RF device. The capture device is connected to the PC via USB. Various RF protocols are supported. The Packet Sniffer filters and decodes packets and displays them in a convenient (...)
CALCULATION TOOL Download
SmartRF Studio
SMARTRFTM-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 (...)
Features
  • Link tests. Send and Receive packets between nodes.
  • Antenna and radiation tests. Set the radio in continuous wave TX and RX states.
  • A set of recommended/typical register settings for all devices.
  • Read and write individual RF registers.
  • Execute individual commands to control the radio.
  • Detailed (...)
CALCULATION TOOL Download
SWSC001C.ZIP (562 KB)
DESIGN TOOL Download
Hardware design reviews for SimpleLink™ CC2xxx devices
SIMPLELINK-2-4GHZ-DESIGN-REVIEWS 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 (...)
SCHEMATIC Download
SNVC112.PDF (214 KB)
SCHEMATIC Download
SWRR109B.ZIP (1396 KB)
SCHEMATIC Download
SWRR114.ZIP (1039 KB)
SCHEMATIC Download
SWRR119.ZIP (1357 KB)
SCHEMATIC Download
SWRR126.PDF (697 KB)
SCHEMATIC Download
SWRR131A.ZIP (411 KB)
SCHEMATIC Download
TIDC156A.ZIP (338 KB)
SCHEMATIC Download
TIDR191.PDF (186 KB)
SCHEMATIC Download
TIDR193.PDF (62 KB)
SCHEMATIC Download
TIDR203A.PDF (25 KB)
ASSEMBLY DRAWING Download
SWRR125.PDF (496 KB)
ASSEMBLY DRAWING Download
TIDC154A.PDF (27 KB)
BILL OF MATERIALS (BOM) Download
SNVC113.PDF (102 KB)
BILL OF MATERIALS (BOM) Download
SWRR116.ZIP (865 KB)
BILL OF MATERIALS (BOM) Download
SWRR127.ZIP (89 KB)
BILL OF MATERIALS (BOM) Download
TIDR192.PDF (54 KB)
BILL OF MATERIALS (BOM) Download
TIDR194.PDF (98 KB)
BILL OF MATERIALS (BOM) Download
TIDR204A.PDF (97 KB)
GERBER FILE Download
SNVC114.ZIP (901 KB)
GERBER FILE Download
SWRR096.ZIP (820 KB)
PCB LAYOUT Download
SWRR133.ZIP (661 KB)
PCB LAYOUT Download
TIDC155A.PDF (110 KB)

Reference designs

REFERENCE DESIGNS Download
CC2541 Keyfob Reference Design
CC2541KEYFOB-RD The Bluetooth Smart Keyfob is a small-form factor, coin-cell powered mobile accessory with buttons, buzzer, LEDs and accelerometer, demonstrating the use of several of the BLE GATT service profiles, like the  proximity and battery service profiles.
document-generic Schematic
REFERENCE DESIGNS Download
Small Form Factor Bluetooth Low Energy (BLE) Reference Design
TIDA-00358 This design showcases the CC254x family of Bluetooth® low energy (BLE) wireless microcontrollers (MCUs) + a meandered F antenna in a compact form factor that can be soldered to an existing PCB. This reference design provides access to all I/Os of the BLE wireless MCU allowing the evaluation of BLE (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
VQFN (RHA) 40 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

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