MAX32665–MAX32668 USER GUIDE
■The MAX32665–MAX32668 are Arm® Cortex®-M4 with FPU-based microcontrollers with 1MB flash and up to 560KB SRAM that can be configured as 448KB SRAM with error correction coding (ECC). They are ideal for wearable medical fitness applications. Optionally available is a second Arm Cortex-M4 with FPU for audio signal processing in a wireless headset/earbud application (MAX32665/MAX32666 only). The architecture includes a Bluetooth® 5 Low Energy radio.
The MAX32665/MAX32666 feature a second Arm Cortex-M4 with FPU with supporting ROM and cache. This feature supports extended data processing capabilities such as audio processing for wireless Bluetooth applications. Refer to the Ordering Information in the device datasheet for device feature detail.
The devices feature five powerful and flexible power modes. Built-in dynamic clockgating and firmware-controlled power gating allows the user to optimize power for the specific application. A built-in single inductor multiple output (SIMO) switch mode power supply allows the device to be optionally self-powered by aprimary lithium cell.
The flash memory is split into two banks of 512KB to provide flexibility when programming over-the-air. The devices have an ECC with single error correction double error detection (SEC-DED) for flash, and SRAM providing extremely reliable code execution. Dedicated hardware runs the Bluetooth 5 Low Energy stack freeing the CPUs for data processing tasks. Multiple SPI,UART, and I²C serial interfaces, 1-Wire® Master, and USB 2.0 High-Speed Device interface allow for interconnection to a wide variety of external sensors. An audio subsystem supporting PDM, PCM, I²S, and TDM. An 8-input, 10-bit ADC is available to monitor analog input from external sensors and meters.
The MAX32666/MAX32668 incorporate a trust protection unit (TPU) with encryption and advanced security features.These features include a modular arithmetic accelerator (MAA) for fast ECDSA, a hardware AES engine, a hardware TRNG entropy generator, a SHA-2 accelerator and a secure bootloader.
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User's Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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6/19 |
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Rev 0 |
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UG6971 |
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5.9 MB |
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