ABRIDGED DATA SHEET
MAX32550
EVALUATION KIT AVAILABLE
DeepCover Secure Cortex-M3
Flash Microcontroller
General Description
DeepCover
®
embedded security solutions cloak sensitive
data under multiple layers of advanced physical security
to provide the most secure key storage possible.
The DeepCover Secure microcontroller (MAX32550) pro-
vides an interoperable, secure, and cost-effective solution
to build new generations of trusted devices such as mobile
chip and pin pads. The MAX32550 is based on a Cortex
M3 processor with 1MB of embedded flash, 256KB of
system RAM, 8KB of battery-backed AES self-encrypted
NVSRAM. It includes all the essential functions of mobile
POS terminal including a cryptographic engine, a true
random number generator, battery-backed RTC, environ-
mental and tamper detection circuitry, a magnetic stripe
reader, a smart card controller with embedded transceiver
to directly support 1.8V, 3.3V, and 5V cards, and an inte-
grated secure keypad controller. It also provides a seam-
less interface to TFT displays and includes a vast array of
peripherals, SPIs, UARTs, DMA, ADC, and DAC that add
flexibility to control and differentiate the system design.
Benefits and Features
●
Arm® Cortex® M3 Processor Core Allows for Easy
Integration into Applications
• 108MHz Core Operating Frequency Through PLL
• 1MB Dual-Bank Flash Memory with Cache
• 256KB System SRAM
• 8KB AES Self-Encrypted NVSRAM
●
Security Features Facilitate System-Level Protection
• Secure Boot Loader with Public Key Authentication
• AES, DES and SHA Hardware Accelerators
• Modulo Arithmetic Hardware Accelerator (MAA)
Supporting RSA, DSA, and ECDSA
• 8-Line Secure Keypad Controller
• Hardware True Random-Number Generator
• Die Shield with Dynamic Fault Detection
• 6 External Tamper Sensors with Independent
Random Dynamic Patterns
• 256-Bit Flip-Flop-Based Battery-Backup AES Key
Storage
• Temperature and Voltage Tamper Monitor
• Real-Time Clock
●
Integrated Peripherals Reduce External Component Count
• Triple-Track Magnetic Stripe Head Interface
• One ISO 7816 Smart Card Interface with Integrated
Transceiver (1.8V, 3V, and 5V)
• USB 2.0 Device with Internal Transceiver and
Dedicated PLL
• 3 SPI Ports, 2 UART Ports, and 1 I
2
C Controller
• 6 Timers, 4 with PWM Capability
• Up to 70 General-Purpose I/O Pins
• 2-Channel, 10-Bit ADC and 1-Channel, 8-Bit DAC
• Color/Monochrome LCD TFT Controller
• 4-Channel DMA Controller
●
Power Management Optimizes Battery Life and
Reduces Active Power Consumption
• Single 3.3V Supply Operation*
• Integrated Battery-Backup Switch
• Clock Gating Function
• Low-Current Battery-Backup Operation
Applications
●
PCI Mobile Payment Terminals (mPOS)
●
ATM Keyboards
●
EMV Card Reader
Functional Diagram
ARM
CORTEX M3
MPU
I
AHB
I
I D
I S
AHB I
APB BRIDGE
NVIC
APB PERIPHERALS
SECURITY
MONITOR*
WATCHDOG
OTP
TIMERS (6)
UART (2)
I
2
C
SMART CARD
RTC*
MAX32550
APB
OSC/PLL (2)
GPIO
KEYPAD
SPI (3)
ADC
MONO LCD
CODE SPACE
FLASH
1MB
AHB PERIPHERALS
SRAM
256kB
DMA
USB DEVICE
TFT
MSR
NVSRAM
8kB*
CRYPTO
TRNG
DAC
ROM
64kB
*
BATTERY-BACKED BLOCKS
*5V smart card support requires external 5.0V supply.
DeepCover is a registered trademark of Maxim Integrated Products, Inc.
Arm and Cortex are registered trademarks of Arm Limited (or its subsidiaries)
in the US and/or elsewhere.
19-7145; Rev 7; 12/17
ABRIDGED DATA SHEET
MAX32550
DeepCover Secure Cortex-M3
Flash Microcontroller
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 specifi-cations.
Errata
sheets
contain
deviations from published specifications. User guides
contain detailed descriptions of device features and
peripherals from a programming perspective.
●
This MAX32550 data sheet, which contains electrical/
timing specifications, package information, and pin
descriptions.
The MAX32550 revision-specific errata sheet.
The MAX32550 User Guide, which contains detailed
information and programming guidelines for core fea-
tures and peripherals.
Additional Documentation
Ordering
Information
PART
MAX32550-LNS+
MAX32550-LNJ+
MAX32550-LBS+
MAX32550-LBJ+
MAX32550-LCS+
MAX32550-LCJ+
PIN-PACKAGE
121 CTBGA
(8mm x 8mm, 0.65mm pitch)
121 CTBGA
(8mm x 8mm, 0.65mm pitch)
121 CTBGA
(8mm x 8mm, 0.65mm pitch)
121 CTBGA
(8mm x 8mm, 0.65mm pitch)
121 CTBGA
(8mm x 8mm, 0.65mm pitch)
121 CTBGA
(8mm x 8mm, 0.65mm pitch)
ICE
No
Yes
No
Yes
No
Yes
●
●
Development and Technical Support
Visit
https://support.maximintegrated.com/micro
for
technical support.
+Denotes
a lead(Pb)-free/RoHS-compliant package.
For the latest package outline information and land
patterns (footprints), go to
www.maximintegrated.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
121 CTBGA
PACKAGE
CODE
X12188+2C
OUTLINE NO.
21-0680
LAND
PATTERN NO.
90-0451
Package Information
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed.
Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
© 2017 Maxim Integrated Products, Inc.
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