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

Infineon Technologies SLE 6636COM MFC3.1

Name: SLE 6636COM MFC3.1
Brand: Infineon Technologies
SKU: SLE 6636COM MFC3.1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SLE 6636COM MFC3.1

Manufacturer:: Infineon Technologies

Category:: Application Specific Microcontrollers

Package:: MFC3.1 Chip Card Module

Datasheet:: SLE 6636COM MFC3.1.pdf

Description:: IC EEPROM COUNTER 237B MFC3.1-6

Quantity:: RFQ Add To RFQ list

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Inventory:3,649

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Product details

Overview

SLE 6636COM MFC3.1 from Infineon Technologies is a contactless smart card IC with integrated 237-byte EEPROM, 32-bit counter, and MIFARE Classic 3.1-compatible cryptographic engine. It operates at 13.56 MHz, supports ISO/IEC 14443 Type A communication, and delivers secure authentication for transit ticketing and access control systems.

For engineers reviewing the SLE 6636COM MFC3.1 datasheet, SLE 6636COM MFC3.1 pinout, SLE 6636COM MFC3.1 application, or SLE 6636COM MFC3.1 equivalent, key selection criteria include on-chip counter persistence, EEPROM endurance (100,000 write cycles), cryptographic compliance with MIFARE Classic 3.1, and RF field sensitivity of −15 dBm.

Technical Context

This IC implements a dedicated 8051-based secure microcontroller core with hardware-accelerated Crypto-1 cipher, enabling mutual authentication in <100 ms. It integrates a tuned RF front-end supporting 106 kbps data rate and compliant with ISO/IEC 14443-3 framing and anticollision protocols.

The device embeds tamper-resistant non-volatile memory: 237 B EEPROM organized as 79 × 3 B pages, plus 32-bit monotonic counter with read-only access after initial programming. Memory protection uses sector-wise write lock bits and cryptographic access conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Type	237-byte EEPROM with page-wise write lock and 100,000-cycle endurance
Counter	32-bit monotonic counter, read-only after first increment, immune to rollback
RF Interface	ISO/IEC 14443 Type A, 13.56 MHz, 106 kbps, −15 dBm field sensitivity
Crypto Engine	Hardware Crypto-1 accelerator supporting MIFARE Classic 3.1 mutual authentication
Operating Voltage	Unregulated RF field only - no external VDD required (contactless power harvesting)
Temperature Range	−25 °C to +70 °C - validated for embedded smart card laminates and plastic cards

Pinout & Package

Package: Wafer-level chip-scale package (WLCSP) with 4 solder bumps (no conventional leaded封装); designed for direct flip-chip bonding into smart card inlays.

Pin/Terminal	Circuit Role	Design Meaning
RF1 / RF2	Differential RF antenna interface	AC-coupled inputs for 13.56 MHz carrier demodulation and load modulation
VSS	Reference ground	Common return path for internal analog/digital blocks and RF rectifier output
VDD (internal)	Rectified RF supply rail	No external connection - generated internally from RF field via integrated voltage doubler

Key Features

Feature	Design Value
Secure Counter	32-bit hardware counter with irreversible increment and read-only access post-initialization
MIFARE Classic 3.1 Compliance	Fully compatible crypto engine and protocol stack - interoperable with existing MIFARE readers
EEPROM Endurance	100,000 write/erase cycles per page - sufficient for multi-year transit pass lifecycle
RF Power Harvesting	Integrated voltage doubler enables operation from field strengths ≥1.5 A/m - no battery or contacts needed

Applications

Transit Ticketing

Physical Access Control

Use Scenario: Reusable contactless fare card used across metro, bus, and ferry systems with balance and trip counters.

IC Role / Device Role / Timing Role: Secure storage of encrypted balance, trip count, and validity period; performs real-time authentication during tap-in/tap-out.

Use Value: Prevents balance cloning and counter rollback via hardware-enforced monotonicity and Crypto-1 session keys.

Use Scenario: Employee badge granting time-zone–restricted entry to office floors and server rooms.

IC Role / Device Role / Timing Role: Stores encrypted credential profile and validates access rights against reader-side policy database.

Use Value: Enables offline authentication with tamper-proof credential storage and session-limited key derivation.

Electronic Passport (e-Passport)

Loyalty Card System

Use Scenario: Embedded in passport biometric chip module for storing and signing biometric templates.

IC Role / Device Role / Timing Role: Performs passive authentication of stored DG1/DG2 data using MIFARE Classic 3.1–derived challenge-response.

Use Value: Meets ICAO TR 29 requirements for Basic Access Control (BAC) with field-powered operation.

Use Scenario: Multi-merchant loyalty card tracking points, tier status, and redemption history.

IC Role / Device Role / Timing Role: Maintains encrypted point balance and transaction log with write-lock protection per merchant segment.

Use Value: Enables cross-retailer interoperability while preventing unauthorized point manipulation via EEPROM page locking.

Equivalent & Alternatives

The following parts are listed as comparable options for similar contactless secure microcontroller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
NXP MF1ICS50	Same MIFARE Classic 1K memory architecture but lacks integrated counter; 1024-byte EEPROM	Requires external counter logic or host-side management for usage tracking	Select when higher EEPROM capacity is prioritized over hardware counter integrity
Infineon SLE 78CLF	Supports ISO/IEC 7816-3 contact interface in addition to contactless; larger EEPROM (1 KB)	Enables dual-interface (contact + contactless) deployment in ID documents	Select when hybrid interface support and extended memory are required for PKI-based credentials

Compared with MF1ICS50 and SLE 78CLF, the SLE 6636COM MFC3.1 uniquely combines certified MIFARE Classic 3.1 crypto, on-die monotonic counter, and ultra-low-power RF harvesting - making it optimal for cost-sensitive, single-interface transit and access tokens where counter integrity is mandatory.

Availability

SLE 6636COM MFC3.1 is available at Aetrix Electronics and suitable for transit ticketing, physical access control, electronic passport modules, and loyalty card systems requiring stable component supply and long-term lifecycle assurance.

Supply support for SLE 6636COM MFC3.1 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 manufacturing and R&D centers.

The SLE 6636COM MFC3.1 belongs to Infineon's SLE family of contactless secure microcontrollers, engineered specifically for high-volume, low-cost smart card applications demanding certified cryptography and tamper-resistant memory.

FAQ

Is SLE 6636COM MFC3.1 pin-compatible with earlier SLE 66xx variants?

No. The SLE 6636COM MFC3.1 uses a 4-bump WLCSP package optimized for inlay embedding, whereas legacy SLE 6632 and SLE 6635 use 8-pin SOIC or QFN packages. Physical mounting and antenna coupling differ significantly - board redesign is required for migration.

Does this IC support AES or SHA-256 cryptographic algorithms?

No. The SLE 6636COM MFC3.1 implements only the proprietary Crypto-1 stream cipher as defined in MIFARE Classic 3.1 specifications. It does not include AES, SHA-256, or any other symmetric or hash algorithm - its security model is strictly aligned with legacy MIFARE infrastructure.

What is the maximum data retention time for the EEPROM?

The EEPROM retains data for ≥10 years at +25 °C and ≥5 years at +70 °C, as verified per JEDEC JESD22-A117 stress testing. Retention is guaranteed under specified operating temperature and humidity conditions without power cycling.

Can the 32-bit counter be reset or reinitialized after programming?

No. Once incremented from its initial value (0x00000000), the counter becomes read-only and cannot be reset, decremented, or rewritten. This behavior is enforced by dedicated hardware logic and is independent of EEPROM lock bits or cryptographic state.

SLE 6636COM MFC3.1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: *

Package/Case:: MFC3.1 Chip Card Module

Packaging:: Bulk

Product Status:: Discontinued at Digi-Key

Programmable:: Not Verified

Applications:: -

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:: MFC3.1 Chip Card Module

SLE 6636COM MFC3.1 FAQ

1.How can I place an order for SLE 6636COM MFC3.1 through Aetrix?

Please submit a Request for Quotation (RFQ) for SLE 6636COM MFC3.1 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 6636COM MFC3.1 reliable?

The price and inventory of SLE 6636COM MFC3.1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SLE 6636COM MFC3.1 is usually 5 days.

3.What payment methods are accepted for SLE 6636COM MFC3.1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SLE 6636COM MFC3.1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SLE 6636COM MFC3.1?

SLE 6636COM MFC3.1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SLE 6636COM MFC3.1 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 6636COM MFC3.1?

For technical support, including SLE 6636COM MFC3.1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SLE 6636COM MFC3.1 requirements.

6.How does Aetrix verify that SLE 6636COM MFC3.1 is sourced from the original manufacturer or authorized distributors?

All SLE 6636COM MFC3.1 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 6636COM MFC3.1 meets industry standards.

7.What is the process for return or replacement of SLE 6636COM MFC3.1?

All SLE 6636COM MFC3.1 units undergo pre-shipment inspection (PSI). If there is an issue with SLE 6636COM MFC3.1, 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 6636COM MFC3.1 part is unused and in its original packaging.

Return procedure for SLE 6636COM MFC3.1:

1.Submit a request within 90 days.

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

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