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

Infineon Technologies SLE 4406SPE M3.2

Name: SLE 4406SPE M3.2
Brand: Infineon Technologies
SKU: SLE 4406SPE M3.2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SLE 4406SPE M3.2

Manufacturer:: Infineon Technologies

Category:: Application Specific Microcontrollers

Package:: M3.2 Chip Card Module

Datasheet:: SLE 4406SPE M3.2.pdf

Description:: IC EEPROM COUNTER 112BYTE M3.2

Quantity:: RFQ Add To RFQ list

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Inventory:3,837

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Product details

Overview

SLE 4406SPE M3.2 from Infineon Technologies is an intelligent 112-bit EEPROM counter IC with integrated security logic, designed for prepaid telephone card applications. It features 104-bit user memory (64-bit Identification Area 1 + 40-bit Counter Area), 24-bit configurable memory (either Identification Area 2 or Data Area), five-stage abacus counter up to 33,352 units, and ISO/IEC 7816-compliant contact interface with synchronous Answer-to-Reset.

For engineers reviewing the SLE 4406SPE M3.2 datasheet, SLE 4406SPE M3.2 pinout, SLE 4406SPE M3.2 application in prepaid telecom systems, or SLE 4406SPE M3.2 equivalent for secure memory cards, this page provides verified functional identity, pin-level interface behavior, endurance (100,000 write/erase cycles), data retention (≥30 years), and security architecture details required for smart card personalization and lifecycle validation.

Technical Context

The SLE 4406SPE M3.2 implements a synchronous ISO/IEC 7816-3 contact interface with CLK, RST, I/O, VDD, and GND pins - no internal oscillator, relying on external clock input. Its control unit enforces minimum/maximum clock frequency limits and validates logical voltage levels to prevent glitch-based attacks.

Memory organization includes 16-bit ROM (manufacturer code), 112-bit EEPROM (with 64-bit ID Area 1, 40-bit counter, and 8-bit PROM/EEPROM personalization bit), plus 24-bit field configurable at personalization as either secondary ID area or free-access data area - all protected by shielded CMOS layout and secure wiring.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	112-bit EEPROM + 16-bit ROM: 104-bit user-accessible (64-bit ID1 + 40-bit counter) with 24-bit optional field.
Counter Range	Up to 33,352 count units via five-stage abacus; guaranteed 21,064 units for test compliance.
Endurance	≥100,000 write/erase cycles per bit - enables multi-use prepaid top-up without memory wear-out failure.
Data Retention	≥30 years at TA = –40°C to +80°C - ensures long-term validity of stored serial numbers and expiry dates.
ESD Protection	Min. 2,000 V HBM (typ. 4,000 V) - meets robustness requirements for card handling in public payphone environments.
Supply Voltage	5 V ±10% - compatible with standard ISO 7816-3 Class A card readers and legacy telecom infrastructure.
Programming Time	5 ms per EEPROM byte - enables high-throughput personalization during card issuance.

Pinout & Package

Package: T-M3.2-6 wire-bonded module for embedding in plastic smart cards. Dimensions and mechanical footprint conform to Infineon's M3.2 specification for card lamination.

Pin/Terminal	Circuit Role	Design Meaning
VDD (C1)	Power supply input	Accepts 5 V ±10%; powers internal charge pump for EEPROM programming.
RST (C2)	Active-low reset input	Resets state machine and initiates Answer-to-Reset sequence per ISO/IEC 7816-3.
CLK (C3)	Clock input	Synchronous timing reference; security interface validates min/max frequency to block clock fault injection.
GND (C5)	Ground reference	Common return path for power and signal; critical for noise immunity in contact-based card interfaces.
N.C. (C6)	No connection	Unbonded pad; electrically isolated - no routing or PCB trace required.
I/O (C7)	Bi-directional open-drain data line	Transfers commands, addresses, and data using half-duplex synchronous protocol; requires external pull-up.

Key Features

Feature	Design Value
ISO/IEC 7816-3 Compliance	Full synchronous transmission support including Answer-to-Reset, enabling plug-and-play integration into existing card readers.
Configurable 24-bit Memory Field	Either 24-bit secondary ID area or free-access data area - allows card issuers to extend credential storage without redesigning firmware.
Transport Code Protection	Prevents unauthorized access during shipping and pre-personalization - ensures chip integrity before card manufacturer programming.
Shielded 1.2 µm CMOS Layout	EEPROM cells and security signals physically shielded across metal layers - mitigates side-channel and probing attacks in physical tampering scenarios.
Abacus Counter Architecture	Five-stage ripple counter with non-volatile increment - prevents rollback and supports precise unit-based billing in pay-per-call systems.

Applications

Prepaid Telephone Cards

Public Payphone Systems

Use Scenario: Embedded in PVC-based phone cards used in European and Asian public payphones for call credit tracking.

IC Role / Device Role / Timing Role: Secure counter and memory storage device managing remaining call units; operates synchronously with reader-provided clock.

Use Value: 33,352-count capacity and 30-year data retention ensure multi-year card validity and reliable credit decrement without memory corruption.

Use Scenario: Integrated into coin-operated or card-operated payphone terminals requiring offline credit validation.

IC Role / Device Role / Timing Role: Standalone secure element executing counter increment/decrement and ID verification without host MCU intervention.

Use Value: Transport code protection and shielded layout prevent cloning or tampering during mass distribution to kiosks and telecom vendors.

Low-Cost SIM-Like Credentials

Secure Access Tokens

Use Scenario: Used in disposable access tokens for building entry where cryptographic complexity is unnecessary but tamper resistance is required.

IC Role / Device Role / Timing Role: Non-volatile memory + counter serving as one-time or limited-use credential with physical security hardening.

Use Value: 100,000-cycle endurance supports repeated reprogramming during token provisioning; N.C. pin simplifies module routing in compact form factors.

Use Scenario: Deployed in vending machines accepting proprietary credit cards for beverage/snack dispensing.

IC Role / Device Role / Timing Role: Billing controller storing unit balance and validating transaction signatures via ROM-based manufacturer code.

Use Value: 64-bit ID Area 1 with 16-bit manufacturer code enables issuer-specific authentication while preventing cross-issuer reuse.

Equivalent & Alternatives

The following parts are listed as comparable options for similar secure EEPROM counter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SLE 4406SP M3.2	8-bit manufacturer data in ID Area 1 vs. 48-bit in SLE 4406SPE; no configurable 24-bit field.	Limited personalization depth; suitable only for basic ID + counter use cases.	Select when full 48-bit issuer data space and flexible 24-bit field are not required.
AT88SC0104CA-SH	1-Kbit EEPROM, crypto coprocessor, DES authentication; no abacus counter; higher power consumption.	Requires host MCU for counter logic; suited for authenticated data storage, not standalone billing.	Choose only if cryptographic authentication and larger memory outweigh need for embedded counter logic and low-power operation.

Compared with SLE 4406SP M3.2, the SLE 4406SPE offers expanded personalization space and field configurability, while the AT88SC0104CA-SH trades counter autonomy for cryptographic capability - making SLE 4406SPE optimal for cost-sensitive, offline, counter-centric prepaid systems.

Availability

SLE 4406SPE M3.2 is available at Aetrix Electronics and suitable for prepaid telephone cards, public payphone terminals, low-cost secure access tokens, and vending machine credit cards requiring stable component supply across multi-year production cycles.

Supply support for SLE 4406SPE M3.2 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 AG is a German semiconductor manufacturer specializing in security ICs, power management, and automotive electronics, headquartered in Munich.

The SLE 4406SPE belongs to Infineon's Chip Card & Security product line, engineered specifically for low-cost, high-reliability prepaid applications where physical tamper resistance and deterministic counter behavior are prioritized over cryptographic processing.

FAQ

What is the maximum guaranteed counter value for SLE 4406SPE M3.2?

The SLE 4406SPE M3.2 guarantees a minimum of 21,064 count units for production testing compliance, though its full architectural limit is 33,352 units. This guarantee ensures consistent performance across manufacturing lots under specified electrical and thermal conditions, supporting reliable billing accuracy in deployed cards.

Does SLE 4406SPE M3.2 require an external programming voltage?

No. The SLE 4406SPE M3.2 generates its EEPROM programming voltage internally via an on-chip charge pump powered from the 5 V supply. This eliminates the need for external high-voltage circuitry, simplifying card module design and reducing bill-of-materials cost in high-volume prepaid card production.

How does the Transport Code protection work on SLE 4406SPE M3.2?

The Transport Code is a factory-programmed security feature that locks memory access until successfully verified during initial personalization. It prevents unauthorized read/write operations during logistics and warehousing, ensuring chips remain unprogrammed and intact until they reach the certified card manufacturer's secure facility.

Can SLE 4406SPE M3.2 operate outside the standard ISO/IEC 7816-3 voltage range?

No. The SLE 4406SPE M3.2 is specified strictly for 5 V ±10% (4.5–5.5 V) operation per ISO/IEC 7816-3 Class A. Operation outside this range risks incorrect EEPROM programming, counter malfunction, or failure to respond to Answer-to-Reset - all violating its certified interoperability with compliant readers.

SLE 4406SPE M3.2 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: *

Package/Case:: M3.2 Chip Card Module

Packaging:: Tape & Reel (TR)

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:: M3.2 Chip Card Module

SLE 4406SPE M3.2 FAQ

1.How can I place an order for SLE 4406SPE M3.2 through Aetrix?

Please submit a Request for Quotation (RFQ) for SLE 4406SPE M3.2 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 4406SPE M3.2 reliable?

The price and inventory of SLE 4406SPE M3.2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SLE 4406SPE M3.2 is usually 5 days.

3.What payment methods are accepted for SLE 4406SPE M3.2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SLE 4406SPE M3.2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SLE 4406SPE M3.2?

SLE 4406SPE M3.2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SLE 4406SPE M3.2 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 4406SPE M3.2?

For technical support, including SLE 4406SPE M3.2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SLE 4406SPE M3.2 requirements.

6.How does Aetrix verify that SLE 4406SPE M3.2 is sourced from the original manufacturer or authorized distributors?

All SLE 4406SPE M3.2 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 4406SPE M3.2 meets industry standards.

7.What is the process for return or replacement of SLE 4406SPE M3.2?

All SLE 4406SPE M3.2 units undergo pre-shipment inspection (PSI). If there is an issue with SLE 4406SPE M3.2, 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 4406SPE M3.2 part is unused and in its original packaging.

Return procedure for SLE 4406SPE M3.2:

1.Submit a request within 90 days.

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

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