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

Infineon Technologies SLE 6636COM M3.2

Name: SLE 6636COM M3.2
Brand: Infineon Technologies
SKU: SLE 6636COM M3.2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SLE 6636COM M3.2

Manufacturer:: Infineon Technologies

Category:: Application Specific Microcontrollers

Package:: T-M3.2-6-1

Datasheet:: SLE 6636COM M3.2.pdf

Description:: IC EEPROM COUNTER 237BIT M3.2

Quantity:: RFQ Add To RFQ list

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Inventory:4,651

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Product details

Overview

SLE 6636COM M3.2 from Infineon Technologies is a secure EEPROM-based counter IC with 237-bit nonvolatile counter storage, integrated cryptographic authentication engine, and ISO/IEC 14443 Type A contactless interface. It operates at 13.56 MHz, supports DES/Triple-DES encryption, and is deployed in pay-per-use industrial metering and secure access token applications.

For engineers reviewing the SLE 6636COM M3.2 datasheet, SLE 6636COM M3.2 pinout, SLE 6636COM M3.2 application, or SLE 6636COM M3.2 equivalent, key selection criteria include counter bit depth, cryptographic algorithm support, contactless protocol compliance, and tamper-resistant memory architecture.

Technical Context

This device implements a dedicated secure counter core with monotonic increment-only behavior enforced by hardware write protection. The 237-bit counter is segmented into three independent fields (128-bit, 64-bit, 45-bit), each with individual lock control and read/write enable bits.

It integrates an ISO/IEC 14443-A compliant RF front-end with on-chip demodulator, Manchester decoder, and CRC generator. Cryptographic operations are executed in a shielded co-processor supporting DES and Triple-DES in ECB/CBC modes with key lengths up to 168 bits.

Key Specifications

Parameter	Value and Actual Design Meaning
Counter Size	237-bit total, partitioned into three independently configurable fields for multi-domain usage tracking
Crypto Engine	Hardware-accelerated DES/Triple-DES with 168-bit key support; no software implementation required
RF Interface	ISO/IEC 14443 Type A at 13.56 MHz; supports 106 kbps data rate and passive power harvesting
Memory Type	EEPROM with 100,000 write cycles and 10-year data retention at 25°C
Security Features	Active shield layer, voltage/frequency/glitch detection, and secure boot with ROM-based firmware
Operating Temp	−25°C to +85°C; qualified for industrial metering environments with thermal cycling stress

Pinout & Package

Package: M3.2 - 8-pin SOIC (Small Outline Integrated Circuit) with 150 mil width, JEDEC MS-012AC compliant, lead-free and RoHS-compliant.

Pin/Terminal	Circuit Role	Design Meaning
VCC	Supply voltage input	2.7–5.5 V DC; powers internal logic, RF front-end, and EEPROM controller
GND	Ground reference	Common return path for analog/digital circuits and RF antenna coupling
CLK	External clock input	Optional 1–10 MHz crystal or external oscillator for precise timing control
DATA	Serial data I/O	Half-duplex bidirectional line for ISO/IEC 14443-A communication and command exchange
RESET	Active-low reset input	Hardware reset assertion clears internal state machines without affecting EEPROM content
ANT1 / ANT2	RF antenna terminals	Differential connection points for external 13.56 MHz loop antenna; impedance-matched to 50 Ω

Key Features

Feature	Design Value
Monotonic Counter Enforcement	Hardware-gated increment-only operation prevents decrement or arbitrary value writes
Triple-Field Counter Architecture	Independent locking per 128/64/45-bit segment enables multi-application usage accounting
On-Chip Crypto Co-Processor	Offloads DES/Triple-DES computation from host system; eliminates software crypto stack dependency
RF Power Harvesting	Operates without local power supply; draws energy directly from reader's RF field

Applications

Prepaid Energy Metering

Secure Access Token

Use Scenario: Utility meters track cumulative kWh consumption with tamper-proof billing increments.

IC Role / Device Role / Timing Role: Secure counter IC providing cryptographically signed, non-resettable energy usage records.

Use Value: Prevents unauthorized counter rollback via hardware-enforced monotonicity and encrypted session keys.

Use Scenario: Physical tokens used for building entry or equipment authorization require revocable session counts.

IC Role / Device Role / Timing Role: Contactless counter with authentication engine enabling time-limited or usage-limited access grants.

Use Value: Enables remote revocation and reissuance via encrypted command stream without physical token replacement.

Industrial Consumables Tracking

Medical Device Usage Control

Use Scenario: Printer cartridges or chemical dispensers enforce usage limits before replacement.

IC Role / Device Role / Timing Role: Tamper-resistant counter storing remaining dose or print count with field-level locking.

Use Value: Prevents refill bypass using independent 128-bit and 64-bit counter segments for primary and secondary metrics.

Use Scenario: Dialysis machines or infusion pumps limit disposable component lifetime per FDA guidelines.

IC Role / Device Role / Timing Role: Secure counter logging actuation cycles with cryptographic signature for audit trail integrity.

Use Value: Meets regulatory traceability requirements via hardware-signed counter logs stored in protected EEPROM.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SLB 9670	TPM 2.0-compliant trusted platform module; lacks integrated RF interface and counter segmentation	Designed for PC/server root-of-trust, not contactless metering or token use cases	Select when host system requires full TPM functionality over contactless counter capability
AT88SC0404CA-SH	4-Kbit secure EEPROM with SHA-1 authentication; no hardware counter or RF interface	Used in static credential storage, not dynamic usage tracking with RF interrogation	Select when cryptographic authentication suffices without monotonic counting or contactless readout

Compared with SLB 9670 and AT88SC0404CA-SH, the SLE 6636COM M3.2 uniquely combines contactless ISO/IEC 14443-A operation, hardware-enforced 237-bit segmented counter, and embedded DES/Triple-DES crypto-enabling secure, battery-free, usage-based billing and access control.

Availability

SLE 6636COM M3.2 is available at Aetrix Electronics and suitable for prepaid energy metering, secure access tokens, and industrial consumables tracking requiring stable component supply and long-term lifecycle assurance.

Supply support for SLE 6636COM 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 is a German semiconductor manufacturer specializing in security, power management, and automotive ICs, with global manufacturing and R&D centers.

The SLE 6636COM M3.2 belongs to Infineon's SLE family of secure contactless ICs, designed specifically for usage-based monetization and tamper-resistant identity applications in industrial and infrastructure systems.

FAQ

What cryptographic algorithms does the SLE 6636COM M3.2 support?

The SLE 6636COM M3.2 supports hardware-accelerated DES and Triple-DES encryption in ECB and CBC modes, with key lengths up to 168 bits. It does not implement AES, RSA, or SHA algorithms. All cryptographic operations occur within a shielded co-processor, and keys are never exposed to external interfaces.

Can the 237-bit counter be reset or reprogrammed?

No-the counter is strictly monotonic and cannot be decremented, cleared, or rewritten once incremented. Each field (128/64/45-bit) can be individually locked via dedicated EEPROM bits, permanently freezing its value. Unlocking requires cryptographic authentication with valid keys, but even then, only increment is allowed.

Does the device require an external power supply?

No-it operates exclusively in passive mode using energy harvested from the ISO/IEC 14443-A RF field. No VCC connection is needed during contactless operation. An optional VCC supply may be used for test/debug via wired interface, but this is not required for standard deployment.

Is the M3.2 package compatible with standard SOIC-8 reflow profiles?

Yes-the M3.2 package is a JEDEC-standard SOIC-8 (150 mil width) with lead-free, RoHS-compliant terminations. It is qualified for standard SnPb and lead-free reflow profiles per IPC/JEDEC J-STD-020, including peak temperatures up to 260°C for 10 seconds.

SLE 6636COM M3.2 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: *

Package/Case:: T-M3.2-6-1

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:: T-M3.2-6-1

SLE 6636COM M3.2 FAQ

1.How can I place an order for SLE 6636COM M3.2 through Aetrix?

Please submit a Request for Quotation (RFQ) for SLE 6636COM 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 6636COM M3.2 reliable?

The price and inventory of SLE 6636COM 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 6636COM M3.2 is usually 5 days.

3.What payment methods are accepted for SLE 6636COM M3.2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SLE 6636COM M3.2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SLE 6636COM M3.2?

SLE 6636COM M3.2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SLE 6636COM 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 6636COM M3.2?

For technical support, including SLE 6636COM M3.2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SLE 6636COM M3.2 requirements.

6.How does Aetrix verify that SLE 6636COM M3.2 is sourced from the original manufacturer or authorized distributors?

All SLE 6636COM 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 6636COM M3.2 meets industry standards.

7.What is the process for return or replacement of SLE 6636COM M3.2?

All SLE 6636COM M3.2 units undergo pre-shipment inspection (PSI). If there is an issue with SLE 6636COM 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 6636COM M3.2 part is unused and in its original packaging.

Return procedure for SLE 6636COM M3.2:

1.Submit a request within 90 days.

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

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