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ALMA-B1 series (open CPU)

Stand-alone Bluetooth 5.4 Low Energy modules

High-performance quad-core wireless MCU with Bluetooth® 5.4, Thread, Matter, and NFC

  • Highly efficient 4th generation Nordic SoC nRF54H20
  • Superior processing power with dual Arm Cortex-M33 and dual RISC-V up to 320 MHz
  • 2 MB non-volatile memory, 1 MB RAM
  • High-performance internal antenna or antenna pin
  • Compact size with access to all nRF54H20 features
  • Global certification
Short Range
standard

Standard

professional

Professional

automotive

Automotive

Product variants

ALMA-B101

Bluetooth low energy module with open CPU and pin for external antenna. Under development

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ALMA-B106

Bluetooth low energy module with open CPU and internal PCB antenna. Under development

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Related links
ALMA-B1 Product Summaryfile icon
Product selection
Product description
Documentation & resources
Product variantsALMA-B101ALMA-B106
Bluetooth qualificationsv5.4
Chip insidenRF54H20
Bluetooth low energy output power EIRP [dBm]13
Maximum range [m]1400
Bluetooth profiles and servicesBluetooth GATT
Operation modeStandalone module open CPU
MCUDual-core Arm® Cortex®-M33, Dual-core RISC-V
RAM [kB]1 MB
NVM2 MB
UART x 8✓
USB✓
SPI x 8✓
I2C x 8✓
I2S x 2✓
PDM✓
CAN✓
GPIO x 64✓
ADC x 14✓
I3C x 2✓
PWM x 4✓
QDEC x 2✓
TWI (I2C compatible) x 8✓
Maximum supply [V]5.5
Minimum supply [V]1.7
Maximum temperature [°C]105
Minimum temperature [°C]-40
Arm TrustZone-M✓
Bluetooth long range (coded PHY)✓
Bluetooth mesh✓
Direction finding (AoA/AoD)✓
FOTA✓
LE audio✓
Matter✓
Secure boot and updates✓
Security Root of Trust✓
Simultaneous GATT server and client✓
AntennasAntenna pinInternal PCB antenna
Dimensions [mm]10.4 x 11.2 x 1.910.4 x 14.3 x 1.9
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