ABRIDGED DATA SHEET 19-5822; Rev 1; 7/11 EVALUATION KIT AVAILABLE MAXQ1050 Secure USB Microcontroller with Asymmetric Cryptography General Description Features The MAXQ1050 is a low-power secure microcontroller designed for USB secure token and smart card reader applications that require certificate-based or other public key cryptographic schemes. The device also incorporates a sophisticated security mechanism to protect secret key data; two self-destruct inputs and environmental monitors (temperature and voltage sensors) erase secret key data when an attack condition is detected. The device has an integrated full-speed USB device interface (including transceiver), hardware SPI™ controller, and an ISO 7816 UART (universal asynchronous receiver-transmitter) for smart card communication. The device supports highspeed encryption with hardware accelerators for AES, RSA, DSA, ECDSA, SHA-1, SHA-224, SHA-256, DES, and 3DES. A true hardware random-number generator is included for key generation and challenge generation. SHigh-Performance, Low-Power, 32-Bit MAXQ30 RISC Core SOperates from USB Power or Single 3.3V Supply SRuns from 20MHz (typ) Internal Oscillator SSupports External 12/24MHz Crystal Oscillator for Microcontroller and USB Operation SOn-Chip 2x/4x Clock Multiplier S16-Bit Instruction Word, 32-Bit Internal Data Bus S16 x 32-Bit Accumulators S16 x 32-Bit General-Purpose Working Registers SUp to 20 General-Purpose I/O Pins S5V Tolerant I/O SVirtually Unlimited Software Stack SOptimized for C-Compiler (High-Speed/Density Code) SMemory 128KB Flash Memory, 512 x 32 Page Size Flash Memory Supports 20k Erase/Write Cycles per Sector 256B of Secure NV SRAM 4KB Battery-Backed NV SRAM 12KB SRAM Secure JTAG/TAP for In-System Programming SSecurity Unique 64-Bit Serial Number Tamper Detection with Rapid Key/Data Destruction Secret Key Destruction on Tamper Events Permanent Loader Lockout Option Proprietary Code Scrambling Technique Using Random Keys Hardware Accelerators for AES, RSA, DSA, ECDSA, DES, 3DES, SHA-1, SHA-224, SHA-256 True Hardware Random-Number Generator Temperature and Voltage Sensors to Detect Attacks Two Self-Destruct Input Pins SAdditional Peripherals Power-Fail Warning Power-On-Reset/Brownout Reset JTAG I/F for System Programming and Accessing On-Chip Debugger Full-Speed USB Device with Six Endpoint Buffers and Integrated Transceiver ISO 7816 Smart Card UART with FIFO 16-Bit Programmable Timers/Counters with Prescaler, Capture/Compare, and PWM SPI Master/Slave Hardware Programmable Watchdog Timer Up to 20 General-Purpose I/O Pins with Eight External Interrupts The device uses the 32-bit, pipelined, highly efficient MAXQ30 microcontroller core. It integrates 128KB flash memory, 12KB of volatile SRAM, 4KB of battery-backed erasable NV SRAM, and 256B of battery-backed, secure zeroization NV SRAM. An additional 1.5KB of volatile cryptographic memory can also be used as general-purpose data memory. The 256B of battery-backed NV SRAM can be used for key storage and other critical data. The 256B memory can be erased in less than 1Fs using a single pulse (“rapid zeroization”), even in battery-backed mode. The device is powered either from the USB bus or by a separate 3.3V voltage supply. A battery connection is provided for applications that want to maintain secret key data for years without draining the battery from application use. In battery-backed mode, the NV SRAM and security sensors consume less than 240nA (typ). Battery backup is optional; applications can choose to store critical data in the flash memory when the cost of the battery outweighs the benefits of constant monitoring for tamper conditions. Applications Security and Banking Tokens Certificate Management Electronic Signature Generation Smart Grid Security Prepaid Utility e-Commerce Secure Access Control Pay-per-Play Ordering Information appears at end of data sheet. SPI is a trademark of Motorola, Inc. For related parts and recommended products to use with this part, refer to: www.maxim-ic.com/MAXQ1050.related Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may be simultaneously available through various sales channels. For information about device errata, go to: www.maxim-ic.com/errata. ����������������������������������������������������������������� Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. ABRIDGED DATA SHEET MAXQ1050 Secure USB Microcontroller with Asymmetric Cryptography Block Diagram UTILITY ROM 128KB FLASH WITH CODE SCRAMBLING RANDOM-NUMBER GENERATOR ECDSA MAA DSA 3DES RSA USB WITH INTEGRATED TRANSCEIVER SHA AES ISO 7816 UART HARDWARE MULTIPLIER 4 x 16-BIT TIMER GPIO MAXQ30 CORE JTAG/DEBUG USART 12KB VOLATILE SRAM 4KB BATTERY-BACKED NONVOLATILE SRAM 256 BYTES BATTERY-BACKED FAST WIPE NV SRAM POWER-ON RESET/POWER-FAIL WARNING WATCHDOG TIMER 20MHz INTERNAL OSCILLATOR INTERNAL 65MHz CRYPTO OSCILLATOR SPI SELF-DESTRUCT INPUT/TAMPER SENSORS EXTERNAL OSCILLATOR MAXQ1050 12/24MHz ���������������������������������������������������������������� Maxim Integrated Products 11 ABRIDGED DATA SHEET MAXQ1050 Secure USB Microcontroller with Asymmetric Cryptography Additional Documentation Designers must have the following documents to fully use all the features of this device. This data sheet contains pin descriptions, feature overviews, and electrical specifications. Errata sheets contain deviations from published specifications. User guides offer detailed descriptions of device features and peripherals from a programming perspective. The following documents can be obtained by contacting a technical support specialist. • This MAXQ1050 data sheet, which contains electrical/ timing specifications, package information, and pin descriptions. Development and Technical Support Maxim and third-party suppliers provide a variety of highly versatile, affordably priced development tools for this microcontroller, including the following: • Compilers • In-circuit emulators • Integrated Development Environments (IDEs) • JTAG-to-serial converters for programming and debugging • The MAXQ1050 revision-specific errata sheet. A partial list of development tool vendors can be found at www.maxim-ic.com/MAXQ_tools. • The MAXQ1050 User’s Guide, which contains detailed information and programming guidelines for core features and peripherals. For technical support, go to https://support.maxim-ic. com/micro. Ordering Information TEMP RANGE FLASH PROGRAM MEMORY (KB) DATA MEMORY MAXQ1050-BNS+ -40NC to +85NC 128 12KB SRAM 4KB NV SRAM 256B fast wipe NV SRAM 40 TQFN-EP* MAXQ1050-DNS+ -40NC to +85NC 128 12KB SRAM 4KB NV SRAM 256B fast wipe NV SRAM Bare die PART PIN-PACKAGE +Denotes a lead-free/RoHS-compliant package. *EP = Exposed pad. Package Information For the latest package outline information and land patterns (footprints), go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO. 40 TQFN-EP T4055+1 21-0140 90-0016 Note to readers: This document is an abridged version of the full data sheet. To request the full data sheet, go to www.maxim-ic.com/MAXQ1050 and click on Request Full Data Sheet. ���������������������������������������������������������������� Maxim Integrated Products 22