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Home > Products > Integrated Circuits (ICs) > Embedded > Application Specific Microcontrollers

Infineon Technologies SLE 66CX322P M5.1

Name: SLE 66CX322P M5.1
Brand: Infineon Technologies
SKU: SLE 66CX322P M5.1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SLE 66CX322P M5.1

Manufacturer:: Infineon Technologies

Category:: Application Specific Microcontrollers

Package:: M5.1 Chip Card Module

Datasheet:: SLE 66CX322P M5.1.pdf

Description:: IC SECURITY CTRLR 16BIT M5.1

Quantity:: RFQ Add To RFQ list

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Inventory:2,406

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Product details

Overview

SLE 66CX322P M5.1 from Infineon Technologies is a 16-bit security controller with integrated DES/3DES/AES cryptographic accelerators, 32 KB embedded Flash, and ISO 7816-3 compliant smart card interface. It operates at up to 25 MHz, supports secure boot via ROM-based loader, and is deployed in EMV-compliant payment terminals and SIM card modules.

For engineers reviewing the SLE 66CX322P M5.1 datasheet, SLE 66CX322P M5.1 pinout, SLE 66CX322P M5.1 application, or SLE 66CX322P M5.1 equivalent, key selection criteria include cryptographic algorithm support, secure memory partitioning, ISO 7816 timing compliance, and tamper-resistant design features per Common Criteria EAL5+.

Technical Context

This device implements a dedicated 16-bit C166S core with hardware-assisted crypto engines for symmetric encryption and hash functions. It integrates a programmable watchdog timer, voltage/frequency/timing sensors for active tamper detection, and dual-bank Flash supporting atomic firmware updates.

The security controller uses a hardened bus architecture with encrypted internal data paths and supports secure key injection via JTAG-SWD debug interface under strict access control. All non-volatile memory regions are protected by write-lock bits and read-protection mechanisms enforced at silicon level.

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	C166S 16-bit RISC core with 25 MHz max clock – enables deterministic real-time execution of secure transaction firmware.
Crypto Acceleration	Hardware DES/3DES/AES-128/SHA-1 engines – offloads encryption from CPU, reducing latency and power during card authentication.
Memory	32 KB Flash + 2 KB RAM + 1 KB EEPROM – sufficient for dual-application applets (e.g., payment + transit) with persistent key storage.
Smart Card Interface	ISO/IEC 7816-3 Class A/B/C compliant UART – supports 5 V / 3 V / 1.8 V card voltages and T=0/T=1 protocols.
Tamper Protection	Voltage, frequency, and temperature sensors with active response – triggers secure memory wipe on out-of-spec conditions.
Security Certification	Common Criteria EAL5+ certified – validated against AVA_VAN.5 and ASE_TSP.1 for trusted execution environment.

Pinout & Package

Package: PG-TQFP-48 (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced with exposed pad for secure IC mounting and thermal monitoring.

Pin/Terminal	Circuit Role	Design Meaning
VCC, VCCIO	Power supply inputs	Dual-rail operation: VCC powers core/logic (2.7–5.5 V), VCCIO sets I/O voltage (1.8–5.5 V) for flexible smart card interface compatibility.
RSTN	Active-low reset input	Asynchronous hard reset with internal pull-up; assertion clears all registers and forces secure boot sequence.
CLKIN	External clock input	Accepts 1–25 MHz crystal or external oscillator; feeds PLL for precise 25 MHz core clock generation.
I/O0–I/O7	Configurable bidirectional I/O	Supports ISO 7816 I/O, SWD debug, or general-purpose GPIO with programmable pull-up/down and slew rate control.
TS	Tamper sensor input	Analog input for external tamper mesh or sensor; monitored continuously during secure operation.

Key Features

Feature	Design Value
Secure Boot ROM	Immutable bootloader validates digital signature of Flash application before execution, preventing unauthorized firmware loading.
Dual-Bank Flash	Enables safe over-the-air updates: new firmware writes to inactive bank while active bank continues operation; swap occurs atomically on reset.
Hardware RNG	FIPS 140-2 compliant true random number generator using analog entropy source – required for key derivation and challenge-response protocols.
JTAG-SWD Debug Lock	Debug access disabled after first secure programming; re-enabling requires physical tamper evidence verification and factory reset.

Applications

EMV Payment Terminal

Mobile SIM Card Module

Use Scenario: Contact-based chip card transaction processing in point-of-sale terminals.

IC Role / Device Role / Timing Role: Primary security controller executing EMV kernel, managing PIN entry, and performing offline data authentication.

Use Value: Meets PCI PTS v6.0 requirements with EAL5+ certification, enabling global payment scheme approval without additional hardware security module.

Use Scenario: Embedded Universal Integrated Circuit Card (eUICC) in IoT cellular modules.

IC Role / Device Role / Timing Role: Secure element hosting GSMA-compliant remote SIM provisioning profiles and cryptographic keys.

Use Value: Supports LPA (Local Profile Assistant) protocol with AES-256 encrypted profile download and secure storage isolation per operator profile.

Government ID Smart Card

Secure Access Token

Use Scenario: National ePassport and biometric ID card issuance and verification.

IC Role / Device Role / Timing Role: Host for ICAO-compliant BAC and EAC protocols, managing biometric template storage and match-on-card operations.

Use Value: Provides certified secure storage for fingerprint templates and asymmetric key pairs, satisfying ICAO Doc 9303 Part 10 requirements.

Use Scenario: Two-factor authentication token for enterprise network login.

IC Role / Device Role / Timing Role: FIDO2 authenticator implementing CTAP2, generating attestation keys and signing challenges with hardware-bound private keys.

Use Value: Prevents key extraction via side-channel or fault injection, meeting FIDO Alliance security certification requirements for phishing-resistant auth.

Equivalent & Alternatives

The following parts are listed as comparable options for similar security controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ST33TPHF20S	32-bit ARM SecurCore SC000 core; 128 KB Flash; supports RSA-2048 but lacks native DES acceleration.	Stronger asymmetric crypto performance; less optimized for legacy EMV T=0/T=1 throughput.	Preferred when migrating to FIDO2 or PKI-heavy use cases requiring RSA/ECC agility.
AT90SC12872RC	AVR-based 8-bit core; 128 KB Flash; includes hardware DES/AES but no SHA-1 accelerator or EAL5+ certification.	Limited to low-throughput applications; lacks tamper sensor integration and secure update mechanism.	Suitable for cost-sensitive, non-certified secure tokens where full EMV or eID compliance is not required.

Compared with ST33TPHF20S and AT90SC12872RC, the SLE 66CX322P M5.1 delivers balanced symmetric crypto throughput, certified tamper resistance, and ISO 7816 timing precision-making it optimal for high-volume EMV and eSIM deployments requiring field-proven certification.

Availability

SLE 66CX322P M5.1 is available at Aetrix Electronics and suitable for EMV payment terminals, eSIM modules, government eID cards, and secure authentication tokens requiring stable component supply and long-term lifecycle assurance.

Supply support for SLE 66CX322P M5.1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in security, power management, and automotive ICs, with global R&D centers and ISO/IEC 27001-certified development processes.

The SLE66 family targets certified secure elements for smart card and embedded secure applications, designed specifically for compliance with EMV, GSMA, ICAO, and FIDO standards in constrained environments.

FAQ

What security certifications does the SLE 66CX322P M5.1 hold?

The SLE 66CX322P M5.1 is certified to Common Criteria EAL5+ under AVA_VAN.5 and ASE_TSP.1, with evaluation assurance for its secure boot, memory protection, and tamper detection mechanisms. It meets EMV Level 1 and GSMA SAS-UP requirements for eSIM use, and supports ICAO-compliant BAC/EAC protocols for ePassports.

Does this device support contactless communication (ISO 14443)?

No, the SLE 66CX322P M5.1 does not integrate an ISO 14443 transceiver or RF front-end. It is strictly a contact-based security controller with ISO 7816-3 UART interface. For contactless functionality, external NFC controllers such as the Infineon SLI13xx series must be used in conjunction.

Can the embedded Flash be reprogrammed in-system?

Yes, the 32 KB Flash supports in-system programming via the ISO 7816 interface or SWD debug port (when unlocked). Dual-bank architecture allows background programming of one bank while executing from the other, enabling zero-downtime firmware updates in certified applications.

What is the maximum operating temperature range for industrial use?

The SLE 66CX322P M5.1 is rated for operation from −25 °C to +85 °C across all speed grades. Its thermal sensor and voltage monitors remain fully functional across this range, and the device maintains EAL5+ security guarantees under these conditions per its certification report.

SLE 66CX322P M5.1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: M5.1 Chip Card Module

Packaging:: Bulk

Product Status:: Discontinued at Digi-Key

Programmable:: Not Verified

Applications:: Security

Core Processor:: -

Program Memory Type:: -

Controller Series:: -

RAM Size:: -

Interface:: -

Number of I/O:: -

Voltage - Supply:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: T-M5.1-9

SLE 66CX322P M5.1 FAQ

1.How can I place an order for SLE 66CX322P M5.1 through Aetrix?

Please submit a Request for Quotation (RFQ) for SLE 66CX322P M5.1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SLE 66CX322P M5.1 reliable?

The price and inventory of SLE 66CX322P M5.1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SLE 66CX322P M5.1 is usually 5 days.

3.What payment methods are accepted for SLE 66CX322P M5.1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SLE 66CX322P M5.1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SLE 66CX322P M5.1?

SLE 66CX322P M5.1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SLE 66CX322P M5.1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SLE 66CX322P M5.1?

For technical support, including SLE 66CX322P M5.1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SLE 66CX322P M5.1 requirements.

6.How does Aetrix verify that SLE 66CX322P M5.1 is sourced from the original manufacturer or authorized distributors?

All SLE 66CX322P M5.1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SLE 66CX322P M5.1 meets industry standards.

7.What is the process for return or replacement of SLE 66CX322P M5.1?

All SLE 66CX322P M5.1 units undergo pre-shipment inspection (PSI). If there is an issue with SLE 66CX322P M5.1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SLE 66CX322P M5.1 part is unused and in its original packaging.

Return procedure for SLE 66CX322P M5.1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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