• CC2541F256RHAR


Bluetooth® Low Energy and proprietary wireless MCU

Features for the CC2541


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)


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)


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


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


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


BTool – Windows PC Application for Evaluation, Development, and Test

Description for the CC2541

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.

Quality information
RoHS Yes
Lead finish / Ball material NIPDAU, NIPDAUAG
MSL rating / Peak reflow Level-3-260C-168 HR
Packaging information
Package | Pins VQFN (RHA) | 40
Package qty | Carrier 2,500 | LARGE T&R
Operating temperature range (°C) -40 to 85

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