CC2541

VQFN (RHA)

36 mm² 6 x 6

RF
- 2.4-GHz Bluetooth low energy Compliant and Proprietary RF System-on-Chip
- Supports 250-kbps, 500-kbps, 1-Mbps, 2-Mbps Data Rates
- 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
- Reference Design Provided
- 6-mm × 6-mm QFN-40 Package
- Pin-Compatible With CC2540 (When Not Using USB or I²C)
Low Power
- Active-Mode RX Down to: 17.9 mA
- Active-Mode TX (0 dBm): 18.2 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–3.6 V)
TPS62730 Compatible Low Power in Active Mode
- RX Down to: 14.7 mA (3-V supply)
- TX (0 dBm): 14.3 mA (3-V supply)
Microcontroller
- High-Performance and Low-Power 8051 Microcontroller Core
  With Code Prefetch
- In-System-Programmable Flash, 128- or 256-KB
- 8-KB 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
- General-Purpose Timers (One 16-Bit, Two 8-Bit)
- IR Generation Circuitry
- 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-PerformanceComparator
Development Tools
- CC2541 Evaluation Module Kit (CC2541EMK)
- CC2541 Mini Development Kit (CC2541DK-MINI)
- SmartRF™ Software
- IAR Embedded Workbench™ Available

Software Features

Bluetooth v4.0 Compliant Protocol Stack for Single-Mode BLE
Solution
- Complete Power-Optimized Stack, Including Controller and
  HostGAP – Central, Peripheral, Observer, or Broadcaster
  (Including Combination Roles)ATT / GATT – Client and ServerSMP –
  AES-128 Encryption and DecryptionL2CAP
- 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
  - Network Processor Interface for Applications Running on an External
    Microcontroller
- BTool – Windows PC Application for Evaluation, Development, and Test

RF
- 2.4-GHz Bluetooth low energy Compliant and Proprietary RF System-on-Chip
- Supports 250-kbps, 500-kbps, 1-Mbps, 2-Mbps Data Rates
- 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
- Reference Design Provided
- 6-mm × 6-mm QFN-40 Package
- Pin-Compatible With CC2540 (When Not Using USB or I²C)
Low Power
- Active-Mode RX Down to: 17.9 mA
- Active-Mode TX (0 dBm): 18.2 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–3.6 V)
TPS62730 Compatible Low Power in Active Mode
- RX Down to: 14.7 mA (3-V supply)
- TX (0 dBm): 14.3 mA (3-V supply)
Microcontroller
- High-Performance and Low-Power 8051 Microcontroller Core
  With Code Prefetch
- In-System-Programmable Flash, 128- or 256-KB
- 8-KB 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
- General-Purpose Timers (One 16-Bit, Two 8-Bit)
- IR Generation Circuitry
- 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-PerformanceComparator
Development Tools
- CC2541 Evaluation Module Kit (CC2541EMK)
- CC2541 Mini Development Kit (CC2541DK-MINI)
- SmartRF™ Software
- IAR Embedded Workbench™ Available

Software Features

Bluetooth v4.0 Compliant Protocol Stack for Single-Mode BLE
Solution
- Complete Power-Optimized Stack, Including Controller and
  HostGAP – Central, Peripheral, Observer, or Broadcaster
  (Including Combination Roles)ATT / GATT – Client and ServerSMP –
  AES-128 Encryption and DecryptionL2CAP
- 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
  - Network Processor Interface for Applications Running on an External
    Microcontroller
- BTool – Windows PC Application for Evaluation, Development, and Test

The CC2541 is a power-optimized true system-on-chip (SoC) solution for both Bluetooth low energy and proprietary 2.4-GHz applications. It enables robust network nodes to be built with low total bill-of-material costs. The CC2541 combines the excellent 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 supporting features and peripherals. The CC2541 is highly suited for systems where ultralow power consumption is required. This is specified by various operating modes. Short transition times between operating modes further enable low power consumption.

The CC2541 is pin-compatible with the CC2540 in the 6-mm × 6-mm QFN40 package, if the USB is not used on the CC2540 and the I²C/extra I/O is not used on the CC2541. Compared to the CC2540, the CC2541 provides lower RF current consumption. The CC2541 does not have the USB interface of the CC2540, and provides lower maximum output power in TX mode. The CC2541 also adds a HW I²C interface.

The CC2541 is pin-compatible with the CC2533 RF4CE-optimized IEEE 802.15.4 SoC.

The CC2541 comes in two different versions: CC2541F128/F256, with 128 KB and 256 KB of flash memory, respectively.

The CC2541 is pin-compatible with the CC2533 RF4CE-optimized IEEE 802.15.4 SoC.

The CC2541 comes in two different versions: CC2541F128/F256, with 128 KB and 256 KB of flash memory, respectively.

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Technical documentation

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	Type	Title	Date
*	Data sheet	CC2541 SimpleLink™ Bluetooth® low energy and proprietary wireless MCU datasheet (Rev. D)	24 Jun 2013
*	Errata	CC2541 Errata Note	26 Mar 2014
	Application note	How to Certify Your Bluetooth Product (Rev. H)	30 Nov 2021
	Selection guide	Leitfaden zur Auswahl drahtloser Kommunikationstechnologie (Rev. A)	14 Jun 2021
	Selection guide	無線連線技術選擇指南 (Rev. A)	14 Jun 2021
	Selection guide	무선 연결 기술 선택 가이드 (Rev. A)	14 Jun 2021
	Selection guide	Wireless Connectivity Technology Selection Guide (Rev. A)	27 May 2021
	Application note	CE Regulations for SRDs Operating in License-Free 2.4GHz/5GHz Bands-WiFi Devices	15 Apr 2020
	User guide	CC2540/41 Bluetooth Low Energy Software Developer’s Guide (Rev. I)	27 Jan 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
	Application note	Debugging Communication Range	27 Mar 2018
	White paper	Wireless Connectivity For The Internet of Things, One Size Does Not Fit All (Rev. A)	16 Oct 2017
	Application note	CC-Antenna-DK2 and Antenna Measurements Summary (Rev. A)	02 Oct 2017
	User guide	Getting started with Bluetooth low energy CC2541, CC2541-Q1, CC2540, & CC2540T f	11 Jul 2017
	Technical article	SimpleLink™ MCU SDKs: Breaking down TI Drivers	12 Apr 2017
	Application note	ETSI EN 300 328 Blocking Test for Bluetooth Low Energy	08 Feb 2017
	Application note	AN119 - Using an External 32kHz Clock to Drive a CC254x Chip (Rev. A)	12 Dec 2016
	Application note	Bluetooth Low Energy Beacons (Rev. A)	19 Oct 2016
	Application note	Voice Over Remote Control	19 May 2016
	More literature	Dual-mode Bluetooth CC256x solutions (Rev. C)	03 Feb 2016
	User guide	CC253x/4x User's Guide (Rev. F)	09 Apr 2014
	White paper	Three Flavors of Bluetooth: Which One to Choose?	25 Mar 2014
	White paper	Wireless connectivity for the Internet of Things (IoT) with MSP430 MCUs	13 Mar 2014
	Application note	AN100 - Crystal Selection Guide (Rev. C)	26 Nov 2013
	More literature	TI: The IoT technology leader	01 Nov 2013
	More literature	The Evolution of the Internet of Things	09 Sep 2013
	White paper	Enabling secure portable medical devices with TI’s MSP430™ MCU	04 Jun 2013
	Application note	AN120 -- Using CC2590 Front End with CC2541	13 Mar 2013
	Application note	DN035 -- Antenna Quick Guide (Rev. A)	12 Feb 2013
	Application note	DN041 -- Using CC253X or CC254X with Dipole PCB Antenna	24 Jan 2013
	Application note	AN081 -- Johanson Technology Balun Optimized for CC253X, CC254X, CC257X, CC853X (Rev. B)	06 Nov 2012
	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
	Application note	AN092 -- Measuring Bluetooth Low Energy Power Consumption (Rev. A)	19 Apr 2012
	Application note	AN097 - Current Savings in CC254x Using the TPS62730 (Rev. B)	08 Feb 2012
	More literature	Bluetooth Low Energy 4-page brochure (Rev. A)	09 Jan 2012
	Application note	AN107 - Murata Balun for CC253x and CC254x, LFB182G45BG2D280 (Rev. A)	26 Oct 2011
	Application note	AN103 -- Basic RF Testing of CCxxxx Devices	08 Aug 2011
	Application note	DN034 -- YAGI 2.4 GHz PCB Antenna	14 Oct 2010
	Application note	AN058 -- Antenna Selection Guide (Rev. B)	06 Oct 2010
	Application note	DN031 -- CC-Antenna-DK Documentation and Antenna Measurements Summary	26 Aug 2010

Design & development

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Daughter card

CC2541EMK — CC2541 Evaluation Module Kit

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 (...)

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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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Development kit

CC2541DK-MINI — CC2541 Mini Development Kit

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 (...)

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Development kit

CC2541DK-RC — CC2541 Bluetooth Smart Remote Control Kit

The CC2541 Bluetooth Smart Remote Control Kit provides a reference platform for Bluetooth low energy remote control application development. It is based on TI's industry leading CC2541 Bluetooth low energy device and contains the hardware and tools required for evaluating, developing, testing, and (...)

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