Code example or demo
Data sheet
CC2541-Q1
- 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
- Complete Power-Optimized Stack, Including Controller and Host
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.
Technical documentation
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View all 39 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 (...)
User guide: PDF
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 (...)
Driver or library
BLE-STACK — Bluetooth Low Energy software 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
PACKET-SNIFFER — SmartRF™ Packet Sniffer 2.18.1
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 (...)
Supported products & hardware
Support software
SWRC251 — CC254x Proprietary Mode Packet Error Rate Test
Supported products & hardware
Support software
SWRC258 — BLE Device Monitor (v2.9.0)
Supported products & hardware
Assembly drawing
CC2541 Postage Stamp Reference Design Assembly Drawing (Rev. A)
TIDC154A.PDF (27 KB)
Bill of materials (BOM)
Bill of Materials for the ECG With Bluetooth Low-Energy
SNVC113.PDF (102 KB)
Bill of materials (BOM)
Bluetooth Smart Keyfob Reference Design Bill of Materials (BOM)
TIDR192.PDF (54 KB)
Bill of materials (BOM)
Bluetooth Smart Remote Control Reference Design Bill of Materials
TIDR194.PDF (98 KB)
Bill of materials (BOM)
CC2541 Postage Stamp Reference Design Bill of Materials (BOM) (Rev. A)
TIDR204A.PDF (97 KB)
Calculation tool
BT-POWER-CALC — Bluetooth Power Calculator for CC13xx, CC26xx and CC23xx devices
This tool is used to calculate Bluetooth Low Energy power consumption estimates for various use cases on TI Bluetooth devices. The calculator includes both advertising and peripheral use cases with the ability to configure different use case profile parameters. The calculator outputs an estimate (...)
Supported products & hardware
Calculation tool
SMARTRF-STUDIO-7 — SmartRF Studio 7 application software
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 (...)
Supported products & hardware
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 three-step process for requesting a review as well as links to relevant technical documentation and (...)
Reference designs
TIDA-00358 — Small Form Factor Bluetooth Low Energy (BLE) Reference Design
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 (...)
Reference designs
CC2541KEYFOB-RD — CC2541 Keyfob Reference Design
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.
Schematic: PDF
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN (RHA) | 40 | Ultra Librarian |
Ordering & quality
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