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Product Detailed Parameters
- Description：IC EEPROM COUNTER 237BIT M3.2-6
- Series：-
- Mfr：Infineon Technologies
- Package：Bulk
- Applications：Security
- Core Processor：-
- Program Memory Type：-
- Controller Series：-
- RAM Size：-
- Interface：-
- Number of I/O：-
- Voltage - Supply：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：M3.2 Chip Card Module
- Supplier Device Package：M3.2 Chip Card Module
- Grade：-
- Qualification：-
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Overview
The Infineon SLE 7736 M3.2 is a member of the Eurochip family, designed as an intelligent 237-bit EEPROM counter for prepaid applications. It features 104 bits of user memory, including a 40-bit counter area and authentication keys. The device supports high-security authentication with challenge-response mechanisms and includes a card-trash mechanism for physical devaluation. Operating at 5V ±10% (Class A) or 3V ±10% (Class B), it complies with ISO/IEC 7816 standards. The M3 suffix indicates a wire-bonded module package suitable for embedding in plastic cards.
Feature Summary
- 221-bit EEPROM and 16-bit mask-programmable ROM providing 104 bits of user-accessible memory
- Counter capacity up to 33,352 units with anti-tearing backup flags
- High-security authentication unit supporting individual secret keys and cipher block chaining
- Card-trash mechanism for physical devaluation and transport code protection
Applications
- Prepaid telephone cards
- Pay TV systems
- Smart cards requiring high security and counter management
Procurement Notes
Verify the specific voltage class required for the application. The standard SLE 7736 M3 operates at 4.5 V to 5.5 V. If operation at lower voltages (2.7 V to 5.5 V) is needed, the SLE 7736-V3 variant must be selected. Confirm whether counter tearing protection should be enabled or disabled via mask option during procurement.
Selection Notes
Select the SLE 7736 M3.2 when compatibility with existing Eurochip terminals is required. Ensure the terminal supports the synchronous transmission protocol defined by ISO/IEC 7816. For applications requiring extended voltage range, choose the -V3 suffix version. Verify that the M3 wire-bonded module format fits the card embedding process.
Part Context
The SLE 7736 series belongs to Infineon's Eurochip family, offering functional compatibility with older SLE 5536 and SLE 4406 devices while providing enhanced security through IMEM technology. It serves as a secure upgrade path for telecom and payment applications needing robust counter management and authentication.
Replacement Considerations
The SLE 7736E offers similar functionality but allows card manufacturers to program the 3rd byte identification data during personalization, whereas the SLE 7736 restricts this to Infineon. Both share the same core architecture and security features.
