nRF54LS05A | nRF54LS05B Preliminary Datasheet

nRF54LS05A and nRF54LS05B Preliminary Datasheet v0.9 [PDF]

nRF54LS05A and nRF54LS05B are part of the nRF54L Series of wireless System on Chips (SoCs). Both devices integrate an ultra-low-power, multiprotocol 2.4 GHz radio and a 128 MHz Arm® Cortex®-M33 processor. nRF54LS05A and nRF54LS05B support Bluetooth® LE and proprietary 2.4 GHz protocols.

Nordic Semiconductor's proprietary technologies, including low-leakage RAM and advanced multiprotocol radio design, enable ultra-low power consumption, helping reduce battery size requirements or extending battery lifetime.

Designed for a broad range of applications, the nRF54L Series SoCs integrate the peripherals expected in a wireless microcontroller, enabling compact, single-chip product designs.

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

Key features

128 MHz Arm Cortex-M33 processor
508 KB NVM and 64/96 KB RAM
Multiprotocol 2.4 GHz radio supporting Bluetooth LE, and 2.4 GHz proprietary modes (up to 4 Mbps)
Three serial interfaces (SPI/TWI/UART)
Standard set of interfaces, peripherals, and timers including Global RTC available in System OFF, ADC, PWM, and QDEC
Baseline security configuration designed to support compliance with regulatory requirements for most Bluetooth LE products
QFN packages pin-to-pin compatible with selected SoCs


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 regulator Single 32 MHz crystal operation Optional 32.768 kHz crystal Security Secure boot Physical protection – Tamper detectors (TAMPC) Key specifications 4 dBm maximum TX power -97 dBm RX sensitivity for 1 Mbps Bluetooth LE 502 CoreMark®, 3.92 CoreMark/MHz EEMBC CoreMark® executing from non-volatile memory 1.7 V to 3.6 V supply and GPIO voltage -40°C to +85°C operating temperature Package options QFN24 (QBAA) with 13 GPIO pins 4x4 mm with 0.5 mm pitch QFN32 (QCAA) with 21 GPIO pins 5x5 mm with 0.5 mm pitch QFN40 (QDAA) with 29 GPIO pins 5x5 mm with 0.4 mm pitch QFN48 (QFAA) with 37 GPIO pins 6x6 mm with 0.4 mm pitch