TI CC2541F256RHAR

CC2541 is a power-optimized true system-on-chip (SoC) solution for Bluetooth low energy and proprietary 2.4-GHz applications. It enables the building of robust network nodes with low overall BOM cost. 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 features and peripherals. The CC2541 is ideally suited for systems requiring ultra-low power consumption, as specified by multiple different operating modes. Short transition times between operating modes further enable low power consumption.

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

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

The CC2541 is available in two versions: CC2541F128/F256 with 128 kB and 256 kB flash memory, respectively.

• RF:
  • 2.4-GHz Bluetooth low energy compliant and proprietary RF on-chip system
  • Supports 250-kbps, 500-kbps, 1-Mbps, 2-Mbps data rates
  • Excellent link budget supporting long-range applications without external front end
  • Programmable output power up to 0 dBm
  • Excellent receiver sensitivity (–94 dBm at 1 Mbps), selectable selectivity, and blocking performance
  • Suitable for compliance with worldwide radio frequency regulatory systems: ETSI EN 300 328 and EN 300 440 Class 2 (Europe), FCC CFR47 Part 15 (USA), and ARIB STD-T66 (Japan)
• Layout:
  • Minimal external components
  • Reference design available
  • 6-mm × 6-mm QFN-40 package
  • Pin-compatible with CC2540 (when USB or I²C not used)
• Low Power:
  • RX operating mode as low as: 17.9 mA
  • TX operating mode (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 interrupt): 0.5 µA
  • Wide supply voltage range (2 V–3.6 V)
• Microcontroller:
  • High-performance, 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
  • Enhanced baseband automation including auto-acknowledgment and address decoding
  • Register retention for all relevant registers in all power modes
• Peripherals:
  • Powerful 5-channel DMA
  • General-purpose timers (one 16-bit, two 8-bit)
  • IR generation circuit
  • 32-kHz sleep timer with capture function
  • Accurate digital RSSI support
  • Battery monitor and temperature sensor
  • 12-bit ADC with 8 channels and configurable resolution
  • AES security co-processor
  • 2 powerful UARTs supporting several serial protocols
  • 23 general-purpose I/O pins (21 × 4 mA, 2 × 20 mA)
  • I²C interface
  • 2 I/O pins with LED drive capability
  • Watchdog timer
  • Integrated high-performance comparator
• 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 stack for single-mode BLE solutions
  • Fully power-optimized stack including controller and host
  • GAP – Central, Peripheral, or Broadcaster (including combined 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 key, and battery GATT services
  • Additional applications supported within BLE software stack
• Multiple configuration options

• 2.4-GHz Bluetooth Low Energy systems
• Proprietary 2.4-GHz systems
• Human interface devices (keyboards, mice, remote controls)
• Sports and leisure equipment
• Mobile phone accessories
• Consumer electronics