ABRIDGED DATA SHEET
MAXQ1851
DeepCover Secure Microcontroller with
Fast Wipe Technology and Cryptography
General Description
Features
DeepCover® embedded security solutions cloak sensitive
data under multiple layers of advanced physical security to
provide the most secure key storage possible.
●ꢀ High-Performance,ꢀLow-Power,ꢀ32-BitꢀMAXQ30ꢀRISCꢀCore
●ꢀ Singleꢀ3.3VꢀSupplyꢀEnablesꢀLowꢀPower/FlexibleꢀInterfacing
●ꢀ DCꢀtoꢀ16MHzꢀCodeꢀExecutionꢀAcrossꢀEntireꢀ
The DeepCover Secure Microcontroller (MAXQ1851) is a low-
power, 32-bit RISC device designed for electronic commerce,
banking, and data security systems. It combines high-perfor-
mance, single-cycle processing, sophisticated tamper-detec-
tion technology, and advanced cryptographic hardware to pro-
vide industry-leading data security and secret key protection.
Operating Range
●ꢀ On-Chipꢀ2x/4xꢀClockꢀMultiplier
●ꢀ 33ꢀInstructions
●ꢀ 16-BitꢀInstructionꢀWord,ꢀ32-BitꢀInternalꢀDataꢀBus
●ꢀ 16ꢀxꢀ32-BitꢀAccumulators
Physical security mechanisms include environmental sen-
sors that detect out of range voltage or temperature con-
ditions, responding with rapid zeroization of critical data.
Four self-destruct inputs are provided for additional tam-
per response. An internal shield over the silicon provides
protection from microprobe attacks. A high-speed internal
ring oscillator is provided to thwart attacks that rely on
controlling the clock rate of the chip. To protect data, the
MAXQ1851 integrates several high-speed encryption
engines. Algorithms supported in hardware include AES
(128-, 192-, and 256-bit), DES, triple DES (2-key and
3-key), ECDSA (160-, 192-, and 256-bit keys), DSA, RSA
(up to 2048 bits), SHA-1, SHA-224, and SHA-256. The
device’s advanced security features are designed to meet
the stringent requirements of regulations such as ITSEC
E3 High, FIPS 140-2 Level 3, and the Common Criteria
certifications.
●ꢀ VirtuallyꢀUnlimitedꢀSoftwareꢀStack
●ꢀ OptimizedꢀforꢀC-Compilerꢀ(High-Speed/DensityꢀCode)
●ꢀ SecurityꢀFeatures
•ꢀ 65MHzꢀCryptographyꢀEngineꢀExecutionꢀtoꢀReduce
Processing Time
•ꢀ UniqueꢀID
•ꢀ TamperꢀDetectionꢀwithꢀFastꢀWipeꢀKey/DataꢀDestruction
•ꢀ 4ꢀSelf-DestructꢀInputs
•ꢀ HardwareꢀAESꢀandꢀDESꢀEngines
•ꢀ PublicꢀKeyꢀCryptographicꢀAcceleratorꢀforꢀDSA,
ECDSA, and RSA
•ꢀ SupportsꢀSHA-1,ꢀSHA-224,ꢀandꢀSHA-256
•ꢀ TrueꢀHardwareꢀRNGꢀandꢀPRNG
•ꢀ Unalterable,ꢀBattery-BackedꢀRTC
•ꢀ HardwareꢀCRC-32/16
●ꢀ Memory
The MAXQ1851 includes 256KB of flash memory, 8KB of
SRAM, 4KB of AES encryptable battery-backed SRAM,
and 256-bit secure, battery-backed, flip-flop-based key
storage. Several communication protocols are supported
with hardware engines, including ISO 7816 for smart card
applications, USB (slave interface with four end-point buf-
fers), an RS-232 universal synchronous/asynchronous
receiver-transmitter (USART), an SPI interface (master
or slave mode support), and up to 16 general-purpose
I/O pins. Other peripherals supported on the MAXQ1851
include a true hardware random-number generator (RNG),
a real-time clock (RTC), a programmable watchdog timer,
and flexible 16-bit timers that support capture, compare,
and pulse-width modulation (PWM) operations.
•ꢀ 256KBꢀFlash,ꢀComposedꢀofꢀ2048-ByteꢀPages
(20K Erase/Write Cycles per Sector)
•ꢀ 8KBꢀSRAM,ꢀ4KBꢀBattery-BackedꢀSRAM
•ꢀ 256-Bit,ꢀBattery-Backed,ꢀFlip-Flop-BasedꢀSecure
Key Storage
•ꢀ DedicatedꢀCryptographicꢀMemoryꢀSpace
●ꢀ I/OꢀandꢀPeripherals
•ꢀ Upꢀtoꢀ16ꢀGeneral-PurposeꢀI/OꢀPins
•ꢀ 5VꢀTolerantꢀI/O
•ꢀ Power-FailꢀWarning
•ꢀ Power-OnꢀReset/BrownoutꢀReset
•ꢀ JTAGꢀI/FꢀforꢀSystemꢀProgrammingꢀandꢀAccessing
On-Chip Debugger
•ꢀ USBꢀI/FꢀwithꢀFourꢀEnd-PointꢀBuffers
•ꢀ ISOꢀ7816ꢀSmartꢀCardꢀUARTꢀwithꢀFIFO
•ꢀ 4ꢀ16-BitꢀTimer/Counters,ꢀTwoꢀwithꢀPWMꢀFunction
•ꢀ SPIꢀandꢀUSARTꢀCommunicationꢀPorts
Applications
●ꢀ Electronic Commerce
●ꢀ Pay-per-Play
®
●ꢀ EMV Banking
●ꢀ CertificateꢀAuthentication
●ꢀ ꢀElectronic Signature
Generation
•ꢀ ProgrammableꢀWatchdogꢀTimer
●ꢀ Secure Access Control
●ꢀ Secure Data Storage
●ꢀ Low-PowerꢀConsumption
•ꢀ 550nAꢀtypꢀCurrentꢀDrawꢀinꢀBattery-BackedꢀMode,
Preserving 4KB AES Encryptable NV SRAM
and 256-Bit Flip-Flop-Based Secure Master Key
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part, refer
to www.maximintegrated.com/MAXQ1851.related.
ꢀ
Storage,ꢀwithꢀSecurityꢀSensorsꢀActiveꢀ(1.5μA
with RTC and Active Die Shield Enabled)
DeepCover is a registered trademark of Maxim Integrated Products, Inc.
EMV is a registered trademark of EMVCo LLC.
19-6618; Rev 0; 5/13