Features and Benefits

  • High-Efficiency Microcontroller Optimizes Battery Life
    • External 24MHz Crystal Supports 96MHz System Clock
    • High-Speed Execute-in-Place SPI (SPIX) Interfaces with Up to 128MB External Flash
    • 128kB of System SRAM
    • Scalable Battery Backup of 0/32/64/96/128kB
    • Scalable Encryption of 0/32/64/96/128kB
    • Multiple 32-Bit Words of One-Time Programmable (OTP) Memory
    • Single 3.0V/3.3V Supply Operation with Internal LDO
  • Multimode, Multistandard RF Radio
    • ISO 14443 Type A/B and EMV Compliant Contactless Interface with Internal Transceiver
  • Security Features Facilitate System-Level Protection
    • Public-Key Based Secure Boot Loader
    • Real-Time AES Decryption and Authentication for External Code Memory
    • AES, DES, 3DES, and SHA Hardware Accelerators
    • Modulo Arithmetic Hardware Accelerator (MAA) Supporting RSA, DSA, and ECC
    • 10-Line Secure Keypad Controller
    • Hardware True Random Number Generator
    • Up to Six External Dynamic Tamper Sensor Pairs with Independent Random Dynamic Patterns
    • Fast Erase of Battery-Backed AES Keys
    • Environmental and Microprobe Tamper Sensors
    • Battery-Backed Real-Time Clock
  • Optimal Peripheral Mix Provides Platform Scalability
    • Two ISO 7816 UARTs
    • Three UARTs
    • Two SPI/I2S Ports
    • One I2C Controller
    • USB 2.0 Full-Speed Device with Internal Transceiver
    • Four 32-Bit Timers with PWM Capability
    • Watchdog Timer and One Wakeup Timer
    • Four-Input, 9-Bit SAR ADC Operating at 4MS/s
    • Up to 59 General-Purpose I/O Pins

Product Details

DeepCover® embedded security solutions cloak sensitive data under multiple layers of advanced physical security to provide the most secure software protection possible.

The DeepCover secure microcontroller (MAX32566) is a secure and cost-effective solution for new generations of trusted devices for mobile payment. An RF contactless radio allows for fast, reliable communication.

The ARM® Cortex®-M4 with FPU core supports a 96MHz system clock. Multiple power operating modes and dynamic clock gating minimize power consumption while maintaining high-performance on demand. Up to 128MB of external, encryptable flash memory is supported on a high-speed SPI bus. Portions of the internal 128kB SRAM are encryptable and can be battery-backed for secure and reliable storage.

Multiple security features create a secure cryptographic boundary that protects program code and data. Environmental, microprobe, and user-configurable external dynamic tamper sensors can trigger a system-level tamper response, erasing secret keys and rendering internal and external memory unreadable. A secure keyboard controller provides a convenient user interface while protecting against unauthorized access. High-speed cryptographic accelerators and a random number generator support highly secure communications.

Multiple SPI, I2S, I2C, UART and ISO-7816 UART serial interfaces are provided, as well as a USB controller/transceiver. Four general-purpose timers support PWM output. An integrated four-channel, 9-bit 4MS/s SAR ADC measures battery voltages and other external signals.


  • Contactless Payment
  • Electronic Commerce
  • Fitness wearables
  • IoT
  • PCI Terminals
  • PIN Pads
  • Secure Access Control
  • Secure Payment

Product Categories

Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA). To request an NDA, click here.

Product Lifecycle icon-not-recommended Not Recommended for New Designs

This designates products ADI does not recommend broadly for new designs.

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