Overview
The CC2541F256RHAR is a power-optimized true system-on-chip (SoC) solution from Texas Instruments, designed for both Bluetooth low energy and proprietary 2.4-GHz applications. This SoC combines the excellent performance of a leading RF transceiver with an industry-standard enhanced 8051 microcontroller core, in-system programmable flash memory, and 8-KB RAM. It is highly suited for systems where ultralow power consumption is required, making it ideal for applications needing robust network nodes with low total bill-of-material costs. The CC2541F256RHAR is available in a 6-mm × 6-mm QFN-40 package and is pin-compatible with the CC2540 and CC2533, although it lacks the USB interface of the CC2540 and includes a hardware I2C interface instead.
Key Specifications
| Specification | Value |
|---|---|
| Package | QFN-40 (6-mm × 6-mm) |
| Operating Temperature Range | -40°C to 85°C |
| Flash Memory | 256 KB |
| RAM | 8 KB |
| RF Frequency | 2.4 GHz |
| Data Rates | 250 kbps, 500 kbps, 1 Mbps, 2 Mbps |
| Programmable Output Power | Up to 0 dBm |
| Receiver Sensitivity | –94 dBm at 1 Mbps |
| Supply Voltage Range | 2 V – 3.6 V |
| Active-Mode RX Current | 17.9 mA |
| Active-Mode TX Current (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 |
Key Features
- RF Performance: Bluetooth low energy compliant and proprietary 2.4-GHz RF system-on-chip with excellent link budget and receiver sensitivity.
- Microcontroller: High-performance and low-power 8051 microcontroller core with code prefetch, in-system programmable flash memory, and 8-KB RAM.
- Low Power Consumption: Active-mode RX down to 17.9 mA, active-mode TX (0 dBm) at 18.2 mA, and various low-power modes (Power Mode 1: 270 µA, Power Mode 2: 1 µA, Power Mode 3: 0.5 µA).
- Peripherals: Powerful five-channel DMA, general-purpose timers, IR generation circuitry, 32-kHz sleep timer with capture, accurate digital RSSI support, battery monitor, temperature sensor, 12-bit ADC with eight channels, AES security coprocessor, and two powerful USARTs.
- Interface and Compatibility: Pin-compatible with CC2540 and CC2533, hardware I2C interface, and 23 general-purpose I/O pins.
- Software Features: Bluetooth v4.0 compliant protocol stack, complete power-optimized stack including controller and host, GAP central and peripheral roles, ATT/GATT client and server, SMP with AES-128 encryption and decryption, and L2CAP support.
Applications
- Bluetooth Low Energy Systems: Ideal for applications requiring low power consumption and long-range capabilities.
- Proprietary 2.4-GHz Systems: Suitable for custom wireless applications.
- Human-Interface Devices: Keyboards, mice, remote controls.
- Sports and Leisure Equipment: Fitness trackers, smart sports gear.
- Mobile Phone Accessories: Bluetooth headsets, speakers.
- Consumer Electronics: Smart home devices, wireless sensors.
Q & A
- What is the CC2541F256RHAR used for?
The CC2541F256RHAR is used for Bluetooth low energy and proprietary 2.4-GHz wireless applications, offering a power-optimized SoC solution.
- What is the package type and size of the CC2541F256RHAR?
The CC2541F256RHAR comes in a 6-mm × 6-mm QFN-40 package.
- What are the key features of the CC2541F256RHAR's RF performance?
It includes Bluetooth low energy compliance, proprietary 2.4-GHz RF system-on-chip, excellent link budget, and receiver sensitivity up to –94 dBm at 1 Mbps.
- What are the power consumption characteristics of the CC2541F256RHAR?
Active-mode RX down to 17.9 mA, active-mode TX (0 dBm) at 18.2 mA, and various low-power modes (Power Mode 1: 270 µA, Power Mode 2: 1 µA, Power Mode 3: 0.5 µA).
- What microcontroller core does the CC2541F256RHAR use?
It uses a high-performance and low-power 8051 microcontroller core with code prefetch.
- What peripherals are included in the CC2541F256RHAR?
Powerful five-channel DMA, general-purpose timers, IR generation circuitry, 32-kHz sleep timer with capture, accurate digital RSSI support, battery monitor, temperature sensor, 12-bit ADC with eight channels, AES security coprocessor, and two powerful USARTs.
- Is the CC2541F256RHAR pin-compatible with other Texas Instruments devices?
Yes, it is pin-compatible with the CC2540 and CC2533, under certain conditions.
- What software features are supported by the CC2541F256RHAR?
Bluetooth v4.0 compliant protocol stack, complete power-optimized stack including controller and host, GAP central and peripheral roles, ATT/GATT client and server, SMP with AES-128 encryption and decryption, and L2CAP support.
- What are some common applications of the CC2541F256RHAR?
Bluetooth low energy systems, proprietary 2.4-GHz systems, human-interface devices, sports and leisure equipment, mobile phone accessories, and consumer electronics.
- How much flash memory does the CC2541F256RHAR have?
The CC2541F256RHAR has 256 KB of flash memory.
