Click here to ask an associate for production status of specific part numbers. MAX32655 Low-Power, Arm Cortex-M4 Processor with FPU-Based Microcontroller and Bluetooth 5.2 General Description Benefits and Features The MAX32655 microcontroller (MCU) is an advanced Ultra-Low-Power Wireless Microcontroller system-on-chip (SoC) featuring an Arm Cortex -M4F Internal 100MHz Oscillator CPU for efficient computation of complex functions and Flexible Low-Power Modes with 7.3728MHz algorithms that is qualified to operate at a temperature System Clock Option range of -40C to +105C. The SoC integrates power reg- 512KB Flash and 128KB SRAM ulation and management with a single inductor multiple- Optional ECC on One 32KB SRAM Bank output (SIMO) buck regulator system. On board is the 16KB Instruction Cache latest generation Bluetooth 5.2 Low Energy (LE) radio, Bluetooth 5.2 LE Radio supporting LE Audio, angle of arrival (AoA), and angle of Dedicated, Ultra-Low-Power, 32-Bit RISC-V departure (AoD) for direction finding, long-range (coded), Coprocessor to Offload Timing-Critical Bluetooth and high-throughput modes. Processing The device offers large onboard memory with 512KB flash Fully Open-Source Bluetooth 5.2 Stack Available and 128KB SRAM, with optional error correction coding Supports AoA, AoD, LE Audio, and Mesh on one 32KB SRAM bank. This 32KB bank can be option- High-Throughput (2Mbps) Mode ally retained in BACKUP mode. An 8KB user OTP area Long-Range (125kbps and 500kbps) Modes is available, of which 8 bytes are retained, even during Rx Sensitivity: -97.5dBm Tx Power: +4.5dBm POWER DOWN mode. Single-Ended Antenna Connection (50) Many high-speed interfaces are supported on the device, Power Management Maximizes Battery Life 2 including multiple SPI, UART, and I C serial interfaces, 2.0V to 3.6V Supply Voltage Range 2 plus one I S port for connecting to an audio codec. An Integrated SIMO Power Regulator eight-input, 10-bit ADC is available to monitor analog input Dynamic Voltage Scaling (DVS) from external analog sources. 23.8A/MHz Active Current at 3.0V 4.4A at 3.0V Retention Current for 32KB The MAX32655 is available in a 81 CTBGA (8mm x 8mm, Selectable SRAM Retention + RTC in Low-Power 0.8mm pitch) and a 60 WLP (3.13mm x 3.25mm, 0.35mm Modes pitch). Multiple Peripherals for System Control Up to Two High-Speed SPI Master/Slave Applications 2 Up to Three High-Speed I C Master/Slave Asset Tracking (3.4Mbps) Fitness/Health and Medical Wearables 2 Up to Four UART, One I S Master/Slave Hearables Up to 8-Input, 10-Bit Sigma-Delta ADC 7.8ksps Industrial Sensors Up to Four Micro-Power Comparators Wireless Computer Peripherals and I/O Devices Timers: Up to Four 32-Bit, Two LP, Two Watchdog Timers 1-Wire Master Up to 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 1-Wire is a registered trademark of Maxim Integrated Products, Inc. Arm, Cordio, and Cortex are registered trademarks of Arm Limited (or its subsidiaries) in the US and/or elsewhere. Bluetooth is a trademark of Bluetooth SIG, Inc. Ordering Information appears at end of data sheet. 19-100883 Rev 2 11/21 2021 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. One Analog Way, Wilmington, MA 01887 U.S.A. Tel: 781.329.4700 2021 Analog Devices, Inc. All rights reserved.MAX32655 Low-Power, Arm Cortex-M4 Processor with FPU-Based Microcontroller and Bluetooth 5.2 Simplified Block Diagram MAX32655MAX32655 100MHz (IPO) EXTERNAL CLOCK HFXOUT Bluetooth 5.2 32MHz (ERFO) 32-BIT RISC-V (RV32) ANT HFXIN RADIO TRANSCEIVER Arm Cortex-M4 8kHz (INRO) WITH FPU 100MHz (CM4) 32.768kHz (ERTCO) SERIAL WIRE DEBUG 7.3728MHz (IBRO) NVIC 60MHz (ISO) 2 I S MASTER/SLAVE 32KIN RTC WITH WAKEUP TIMER 32KOUT Up To 3 x HIGH SPEED 2 I C MASTER POWER-ON RESET, MEMORY BROWNOUT MONITOR, RSTN SUPPLY VOLTAGE Up To 3 4-WIRE UART FLASH 512KB MONITORS SHARED PAD FUNCTIONS GPIO/ OPTIONAL 2-WIRE VREGI SRAM0 32KB + ECC ALTERNATE LPUART TIMERS/PWM VSSPWR FUNCTION CAPTURE/ UP TO 52 BLE LDO IN SRAM1 32KB Up To 2 x QSPI COMPARE V SS MASTER/SLAVE (3 CS LPTIMERS LXA EACH) SRAM2 48KB SERIAL WIRE DEBUG LXB 1-Wire MASTER (OWM) V SRAM3 16KB BST SPI SIMO VOLTAGE V REGO A 2 I C REGULATION, Up To 4 PULSE TRAIN CACHE 16KB V UART REGO B DYNAMIC VOLTAGE ENGINES SCALING LPUART V REGO C AND BOOT ROM 4 32-BIT TIMERS 1-Wire V REGO D POWER CONTROL WAKE-UP TIMER 8-CH - ADC VDDA MICROPOWER V SSA COMPARATORS Up To 2 32-BIT LPTIMERS 4-CH DMA V BLUETOOTH SS TX ANTENNA V SS RX 2 WATCHDOG V REGI CONTROL V SS TIMER V TXOUT V VTXOUT RXOUT OPTIONAL 8 EXTERNAL VCOREA VRXOUT UNIQUE ID EXTERNAL INTERRUPTS VCOREB V DDIO CHANNEL VDDIOH V DDIOH 10-BIT VDDIO SECURITY VCOREA - ADC VDDA V COREB AES-128/192/256 OPTIONAL 4 8 RADIO I/O I/O DIGITAL/ 32-BIT CRC MICROPOWER MEMORIES ACCELERATOR COMPARATORS ANALOG SECURE NV KEY SECURE BOOT 8 4 TRUE RANDOM NUMBER GENERATOR (TRNG) 4 www.analog.com Analog Devices 2 MULTILAYER BUS MATRIX AHB/APB Tx/Rx Tx/Rx Tx/Rx Tx/Rx Tx/Rx FIFO FIFO FIFO FIFO FIFO