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MAXQ1740 Datasheet(PDF) 1 Page - Maxim Integrated Products

Part No. MAXQ1740
Description  Magnetic Card Reader Security Microcontroller Optimized for C-Compiler
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAXQ1740 Datasheet(HTML) 1 Page - Maxim Integrated Products

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MAXQ1740
Magnetic Card Reader Security Microcontroller
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ABRIDGED DATA SHEET
General Description
The MAXQ1740 is a low-power microcontroller that inte-
grates a triple-track magnetic stripe reader interface, an
I2C interface, two SPIK interfaces, and one universal
synchronous/asynchronous receiver-transmitter (USART)
interface. Security features include an AES encryption
engine, a true hardware random-number generator, volt-
age-attack sensors, and a self-destruct input pin. A sin-
gle-cycle 16-bit RISC MAXQM CPU powers the device. It
provides a high level of security for the magnetic stripe
reader by placing an ultra-secure microcontroller with
high-speed hardware encryption inside the magnetic
card reader head.
The device provides 16KB of flash memory, 1KB of fast-
wipe nonvolatile SRAM (NV SRAM), and 128 bytes of
data NV SRAM that instantaneously zeroizes its contents
when a tamper is detected. The 128 bytes can be used
as data RAM or working RAM for the AES. The fast-wipe
feature ensures that any data in the 1KB of memory is
destroyed before any application software can access it.
Factory programming of a unique 64-bit serial number,
and/or customer secret key(s), is available upon request.
The microcontroller runs within a wide 1.7V to 3.6V oper-
ating range. User-application firmware interfaces with the
triple-track magnetic stripe interface. Reference software
supports the reading of cards adhering to ISO 7811, ISO
7812, and ISO 7813. Source code to the reference soft-
ware is available so applications can make adjustments
for custom card formats.
An ultra-low-power stop mode provides the ultimate in
low-power performance. In this mode, only a minimum
amount of circuitry is powered to support detection of
self-destruct events. When the main power supply is
present and the microcontroller is in stop mode, the
device has the option of exiting stop mode when stimulat-
ed by general-purpose port pins or the serial interfaces.
Applications
ATM/POS Terminals
Physical Security/Building Access
Features
S
CoreFunctionality
High-Performance,Low-Power,16-BitMAXQ20C
 RISCCore
6MHzInternalOscillator(±10%)
Upto12MHzExternalCrystalSupported
1.7Vto3.6VOperatingVoltage
1-Wire®InterfaceforDebuggerandFlash
 Programming
OptimizedforC-Compiler
S
Security
AESHardwareAccelerators
HardwareTrueRandom-NumberGenerator
Self-DestructInputforTamperDetection
PermanentLoaderLockoutOption
CodeScrambling
S
Memory
16KBFlashMemory
512BytesMemoryPageSectors
1000Erase/WriteCyclesperSector
1152BytesFast-WipeNVSRAM,128Bytes
 UsablebyCryptographicEngine
6KBUtilityROMwithUser-CallableRoutines
S
I/OandPeripherals
Triple-TrackMagneticStripeHeadInterface
TwoSPICommunicationPorts
USARTCommunicationPort
Two16-BitTimers
I2CCommunicationPort
Upto16General-PurposeI/OPins
Upto8ExternalInterruptPins
S
LowPowerConsumption
3µACurrentinLowestPowerStopMode
3.75mA(typ)at6MHz,0.8mA(typ)at1MHz
DividedSystemClockModesAvailable
S
AdditionalPeripherals
On-ChipPower-On/Power-FailReset
SupplyOvervoltageDetection
ProgrammableWatchdogTimer
Wake-UpTimer
19-5893; Rev 0; 6/11
Ordering Information appears at end of data sheet.
SPI is a trademark of Motorola, Inc.
MAXQ and 1-Wire are registered trademarks of Maxim Integrated Products, Inc.
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.
For related parts and recommended products to use with this part, refer to: www.maxim-ic.com/MAXQ1740.related
Forpricing,delivery,andorderinginformation,pleasecontactMaximDirectat1-888-629-4642,
orvisitMaxim’swebsiteatwww.maxim-ic.com.


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