Click here to ask an associate for production status of specific part numbers. MAX32665/MAX32666 Low-Power Arm Cortex-M4 with FPU-Based Microcontroller with Bluetooth 5 for Wearables General Description Benefits and Features DARWIN is a new breed of low-power microcontrollers High-Efficiency Microcontroller and Audio DSP for built to thrive in the rapidly evolving Internet of Things Wearable and Hearable Devices (IoT). They are smart, with the biggest memories in their Arm Cortex-M4 with FPU Up to 96MHz class and a massively scalable memory architecture. They Optional Second Arm Cortex-M4 with FPU run forever, thanks to wearable-grade power technology. Optimized for Data Processing They are durable enough to withstand the most advanced Low-Power, 7.3728MHz System Clock Option cyberattacks. DARWIN microcontrollers are designed to 1MB Flash, Organized into Dual Banks 2 x 512KB run any application imaginablein places where you 560KB (448KB ECC) SRAM 3 x 16KB Cache would not dream of sending other microcontrollers. Optional Error Correction Code (ECC-SEC-DED) for Cache, SRAM, and Internal Flash Generation UB microcontrollers are designed to handle the increasingly complex applications demanded by to- Bluetooth 5 Low Energy Radio day s advanced battery-powered devices and wirelessly 1Mbps and 2Mbps Data Throughput connected devices, while providing robust hardware secu- Long Range (125kbps and 500kbps) rity and Bluetooth 5 Low Energy (BLE) radio connectivi- Advertising Extension ty. Rx Sensitivity: -95dbm Tx Power Up to +4.5dbm On-Chip Matching with Single-Ended Antenna Port The MAX32665/MAX32666 UB class microcontrollers are advanced systems-on-chips featuring an Arm Cor- Power Management Maximizes Operating Time for tex -M4 with FPU CPU for efficient computation of com- Battery Applications plex functions and algorithms with integrated power man- Integrated SIMO SMPS for Coin-Cell Operation agement. It also includes the newest generation Bluetooth Dynamic Voltage Scaling Minimizes Active Core 5 Low Energy radio with support for long range (4x) and Power Consumption high throughput (2Mbps) and Maxim s best-in-class hard- 27.3A/MHz at 3.3V Executing from Cache ware security suite trust protection unit (TPU). The de- Selectable SRAM Retention in Low Power Modes vices offer large on-board memory with 1MB flash and up with RTC Enabled to 560KB SRAM that can be configured as 448KB SRAM Multiple Peripherals for System Control with error correction coding (ECC). Split flash banks of Three QSPI Master/Slave with Three Chip Selects 512KB each support seamless over the air upgrades, 2 Each, Three 4-Wire UARTs, Three I C Master/ adding an additional degree of reliability. Memory scalabil- Slave, up to 50 GPIO ity of data (SRAM) and code (Flash) space is supported QSPI (SPIXF) with Real-Time Flash Decryption by two SPI execute-in-place (SPIX) interfaces. QSPI (SPIXR) RAM Interface Provides SRAM Multiple high-speed interfaces are supported including Expansion HS-USB, secure digital interface (SD, SDIO, MMC, SD- 8-Input, 10-Bit Delta-Sigma ADC 7.8ksps 2 HC, and microSD), SPI, UART, and I C serial inter- USB 2.0 HS Engine with Internal Transceiver faces, and an audio subsystem supporting PDM, PCM, PDM Interface Supports Two Digital Microphones 2 2 I S, and TDM interfaces. An 8-input, 10-bit ADC is avail- I S with TDM, Six 32-Bit Timers, Two High-Speed able to monitor analog inputs from external sensors and Timers, 1-Wire Master, 16 Pulse Trains (PWM) meters. The devices are available in 109-bump WLP Secure Digital Interface Supports SD3.0/SDIO3.0/ (0.35mm pitch) and 121-bump CTBGA (0.65mm pitch). eMMC4.51 Secure Valuable IP/Data with Hardware Security Applications Trust Protection Unit (TPU) with MAA Supports Connected Home Fast ECDSA and Modular Arithmetic Industrial Sensors AES128/192/256, DES, 3DES, Hardware Payment/Fitness/Medical Wearables Accelerator Telemedicine TRNG Seed Generator, SHA-2 Accelerator Gaming Devices Secure Bootloader Hearables Ordering Information appears at end of data sheet. 19-100411 Rev 6 10/21 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.MAX32665/MAX32666 Low-Power Arm Cortex-M4 with FPU-Based Microcontroller with Bluetooth 5 for Wearables Simplified Block Diagram MAX32665/MAX32666MAX32665/MAX32666 SD3.0/SDIO3.0/ 96MHz Arm Cortex-M4 eMMC4.51 HOST WITH FPU CPU0 60MHz 96MHz HFXOUT NVIC 2 OSC 3 I C MASTER HFXIN 32.768kHz Arm Cortex-M4 WITH FPU CPU1 7.3728MHz 3 4-WIRE UART 96MHz SWCLK SERIAL WIRE 3 x QSPI MASTER/ SHARED PAD SWDIO DEBUG/GPIO SLAVE FUNCTIONS (3 CS each) POWER-ON RESET, MEMORY BROWNOUT MONITOR, TIMERS/PWM ENCRYPTED QSPI FLASH 1MB RSTN SUPPLY VOLTAGE CAPTURE/ FLASH (SPIXF) DUAL BANK MONITORS COMPARE MASTER WITH Error Correction AUTHENTICATION (SEC-DED) SPI V REGI QSPI VSSPWR CACHE 16KB CPU0 QSPI RAM (SPIXR) SPIXF V TXIN MASTER SPIXR GPIO/ V RXIN 2 CACHE 16KB CPU1 I C ALTERNATE VSS 2 I S FUNCTION LXA AUDIO INTERFACES UART UP TO 48 2 LXB SRAM I S, TDM, PCM, PDM 1-Wire 560KB V BST TDM (448KB w/SEC-DED V REGO A 16 PULSE TRAIN ENGINES PDM ERROR CORRECTION) VREGO B SDIO V REGO C 8-CH ADC SIMO VOLTAGE VREGO D 1-WIRE MASTER (OWM) ROM CPU0 COMPARATORS REGULATION, V DDA DYNAMIC VOLTAGE V SSA 6 32-BIT TIMERS ROM CPU1 EXTERNAL VSSA BT0 SCALING WAKE-UP TIMER INTERRUPTS V & DD BT1 VREGI VSSA BT1 POWER CONTROL V TXOUT RESOURCE VDD BT2 V RXOUT V PROTECTION SSA BT2 8 EXTERNAL VCOREA V DD BT3 UNIT CHANNEL V COREB VSSA BT3 V 10-BIT DDIOH VDD BT4 8-CH DMA0 VDDIO ADC V SSA BT4 V DDB V DD BT5 V 4 COMPARATORS DDA V 8-CH DMA1 SSA BT5 8 V TXOUT 4 8 V RXOUT 2 HTIMER VDDIO 4 V DDIOH OPTIONAL 3 WATCHDOG VCOREA TIMER V BLUETOOTH ANT THRU COREB BLUETOOTH 5 LOW ENERGY STACK CORE DIGITAL/ ANT RADIO I/O I/O ANALOG UNIQUE ID MEMORIES 32KIN TRUST PROTECTION UNIT (TPU) (OPTIONAL) RTC MODULAR ARITHMETIC SHA-224/256/384/512, 32KOUT ACCELERATOR (MAA) AES-128/192/256, DES, 3DES DP TRUE RANDOM NUMBER CRC ACCELERATOR USB 2.0 HI- DM AND RING OSCILLATOR GENERATOR (TRNG) SPEED VDDB CONTROLLER SECURE NV KEY MEMORY DECRYPTION V SSB INTEGRITY UNIT (MDIU) SECURE BOOTLOADER www.analog.com Analog Devices 2 PHY MULTI-LAYER BUS MATRIX AHB/APB 16KB 16KB Tx/Rx Tx/Rx Tx/Rx Tx/Rx CACHE CACHE FIFO FIFO FIFO FIFO