1FEATURES
23• 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)
– 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-Performance Comparator
• Development Tools
– CC2541 Evaluation Module Kit
(CC2541EMK)
– CC2541 Mini Development Kit (CC2541DKWhite
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 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
– Network Processor Interface for
Applications Running on an External
Microcontroller
– BTool – Windows PC Application for
Evaluation, Development, and Test

APPLICATIONS
• 2.4-GHz Bluetooth low energy Systems
• Proprietary 2.4-GHz Systems
• Human-Interface Devices (Keyboard, Mouse,
Remote Control)
• Sports and Leisure Equipment
• Mobile Phone Accessories
• Consumer Electronics
CC2541 WITH TPS62730
• TPS62730 is a 2-MHz Step-Down Converter
With Bypass Mode
• Extends Battery Lifetime by up to 20%
• Reduced Current in All Active Modes
• 30-nA Bypass Mode Current to Support Low-
Power Modes
• RF Performance Unchanged
• Small Package Allows for Small Solution Size
• CC2541 Controllable

DESCRIPTION
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.
For the CC2541 block diagram, see Figure 1.