Low-Power, Arm Cortex-M4 Processor with FPU-Based Microcontroller and Bluetooth 5.2

Integrates SIMO Power Regulation, Latest Generation Bluetooth LE 5, RISC-V Coprocessor



The MAX32655 microcontroller (MCU) is an advanced system-on-chip (SoC) featuring an Arm® Cortex®-M4F CPU for efficient computation of complex functions and algorithms that is qualified to operate at a temperature range of -40°C to +105°C. The SoC integrates power regulation and management with a single inductor multiple output (SIMO) buck regulator system. On board is the latest generation Bluetooth® 5.2 Low Energy (LE) radio, supporting LE Audio, angle of arrival (AoA), and angle of departure (AoD) for direction finding, long-range (coded), and high-throughput modes.

The device offers large onboard memory with 512KB flash and 128KB SRAM, with optional error correction coding on one 32KB SRAM bank. This 32KB bank can be optionally retained in backup mode. An 8KB user OTP area is available and 8 bytes are retained, even during power-down.

Many high-speed interfaces are supported on the device including multiple QSPI, UART, and I2C serial interfaces, plus one I2S port for connecting to an audio codec. An eight-input, 10-bit ADC is available to monitor analog input from external analog sources.

The device is available in an 81 CTBGA (9 x 9, 8mm x 8mm, 0.8mm pitch) package.
MAX32655: Typical Operating Circuit MAX32655: Typical Operating Circuit 放大+


  • Ultra-Low-Power Wireless Microcontroller
    • Internal 100MHz Oscillator
    • Flexible Low-Power Modes with 7.3728MHz System Clock Option
    • 512KB Flash and 128KB SRAM
      • Optional ECC on One 32KB SRAM Bank
    • 16KB Instruction Cache 
  • Bluetooth 5.2 LE Radio
    • Dedicated, Ultra-Low-Power, 32-Bit RISC-V Coprocessor to Offload Timing-Critical Bluetooth Processing
    • Fully Open-Source Bluetooth 5.2 Stack Available
    • Supports AoA, AoD, LE Audio, and Mesh
    • High-Throughput (2Mbps) Mode
    • Long-Range (125kbps and 500kbps) Modes
    • Rx Sensitivity: -97.5dBm; Tx Power: +4.5dBm
    • Single-Ended Antenna Connection (50Ω)
  • Power Management Maximizes Battery Life
    • 2.0V to 3.6V Supply Voltage Range
    • Integrated SIMO Power Regulator
    • Dynamic Voltage Scaling (DVS)
    • 23.8μA/MHz Active Current at 3.0V
    • 4.4μA at 3.0V Retention Current for 32KB
    • Selectable SRAM Retention + RTC in Low-Power Modes
  • Multiple Peripherals for System Control
    • Two High-Speed SPI Master/Slave
    • Three High-Speed I2C Master/Slave (3.4Mbps)
    • Four UART, One I2S Master/Slave
    • 8-Input, 10-Bit Sigma-Delta ADC 7.8ksps
    • Four Micro-Power Comparators
    • Timers: Two 32-Bit, Two LP, Two Watchdog Timers
    • 1-Wire® Master
    • Four Pulse Train (PWM) Engines
    • RTC with Wake-Up Timer
    • Up to 52 GPIOs
  • Security and Integrity​
    • Available Secure Boot
    • TRNG Seed Generator
    • AES 128/192/256 Hardware Acceleration Engine


  • 资产跟踪
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  • 耳戴式设备
  • 工业传感器
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX32655EVKIT: Evaluation Kit for the MAX32655
申请可靠性报告: MAX32655 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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  • Power Management Maximizes Battery Life

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高可靠性、超低功耗微控制器,采用Arm Cortex M4 FPU处理器,适用于工业和IoT

  • 高成效微控制器,适用于低功耗、高可靠性设备
  • 灵活的时钟方案
  • 电源管理最大程度延长电池应用的工作时间