nRF54LS05B Datasheet

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nRF54LS05A and nRF54LS05B are part of the nRF54L Series. All wireless System-on-Chip (SoC) options in the series integrate an ultra-low power multiprotocol 2.4 GHz radio with MCU (Microcontroller Unit) functionality featuring a 128 MHz Arm® Cortex®-M33 processor. nRF54LS05A and nRF54LS05B support Bluetooth® LE and proprietary 2.4 GHz protocols.

Nordic Semiconductor's proprietary technologies, such as low-leakage RAM and advanced multiprotocol radio design, enable ultra-low power consumption, reducing battery size or increasing lifetime.

Designed with versatility in mind, the nRF54L Series SoCs are suited to enable a broad range of applications. The devices integrate the peripherals expected in a wireless microcontroller, enabling a variety of products to be implemented with a single chip.

nRF54LS05A and nRF54LS05B are available in a range of pin-to-pin compatible QFN package options, enabling cost-optimized and flexible design across different application requirements.

Key features
Radio
  • Bluetooth LE
    • LE 2M, LE 1M
  • 2.4 GHz proprietary GFSK
    • 4 Mbps, 2 Mbps, 1 Mbps
  • Single-ended antenna output (on-chip balun)
  • 128-bit AES/ECB/CCM/AAR coprocessor
  • Configurable TX power with 1 dBm step size from -10 dBm to maximum
Processor
  • 128 MHz Arm Cortex-M33 CPU
    • MPU
    • Debug – SWD, DWT
Memory
  • 508 KB NVM (RRAM)
  • 64/96 KB RAM
Peripherals
  • Three fully featured serial interfaces with EasyDMA, supporting I2C, SPI controller/peripheral, and UART

    • SPI up to 8 MHz (SPIM, SPIS)

    • TWI up to 400 kHz and I2C compatible (TWIM, TWIS)

    • UART up to 1 Mbps (UARTE)

  • SAADC with four channels
    • 14-bit at 31.25 ksps (oversampled)
    • 12-bit at 125 ksps (oversampled)
    • 10-bit at up to 1 Msps
  • Global RTC can run in System OFF mode and implement a shared system timer (GRTC)
  • One four-channel pulse width modulator (PWM) with autonomous waveform generation
  • One quadrature decoder (QDEC)
  • One watchdog timer (WDT)
  • Three 32-bit timers with counter mode (TIMER)
  • Temperature sensor (TEMP)
GPIO
  • Up to 37 GPIO pins
  • 8 MHz ports
Power supply and clock
  • Single-inductor DC/DC converter
  • Single 32 MHz crystal operation
  • Optional 32.768 kHz crystal
Security
  • Secure boot
  • Physical protection – Tamper detectors (TAMPC)
  • Hardware accelerated Bluetooth LE encryption
Key specifications
  • 4 dBm maximum TX power
  • -96 dBm RX sensitivity for 1 Mbps Bluetooth LE
  • 500 CoreMark®, 3.90 CoreMark/MHz EEMBC CoreMark® executing from non-volatile memory
  • 1.7 - 3.6 V supply and GPIO voltage
  • -40°C to +85°C operating temperature
Package options
  • QFN48 (QFAA) with 37 GPIO pins
    • 6x6 mm with 0.4 mm pitch

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