SLE5542M32XHSA2

Overview

The Infineon SLE5542M32XHSA2 is an intelligent 256-byte EEPROM security IC designed for contact-based applications. It features a 256 x 8 bit Data Memory and 32 x 1 bit Protection Memory, enabling byte-wise write protection for the first 32 addresses. The device operates on a two-wire link protocol with ISO/IEC 7816 compliance and requires verification of a 3-Byte Programmable Security Code (PSC) to alter data or modify protection bits. Electrical specifications include a 5 V supply voltage, typical current consumption of 600 µA, and an erase/write time of 5 ms.

Feature Summary

• 256-byte Data Memory with irreversible byte-wise write protection for the first 32 bytes via dedicated Protection Memory.
• Data access controlled by a 3-Byte Programmable Security Code (PSC).
• ISO/IEC 7816 compliant contact interface supporting synchronous transmission.
• Robust electrical characteristics including 100,000 cycle endurance and 10-year data retention.

Applications

• Secure identification cards
• Access control systems
• Smart payment cards

Procurement Notes

Verify the specific ordering code suffix against official Infineon documentation to confirm package type and availability. Confirm that the module variant matches the required embedding specifications for plastic card integration. Ensure environmental ratings align with the intended application temperature range.

Selection Notes

Select this component when a secure, non-volatile memory solution with hardware-level write protection is required. The SLE5542 is functionally compatible with the SLE 4442 series. Consider the M3 wire-bonded module format for direct embedding in smart cards. Verify that the 5V operating voltage meets system requirements.

Part Context

The SLE5542 belongs to Infineon's specialized Chip Card & Security ICs portfolio. It utilizes advanced 1.2 µm CMOS technology optimized for security layouts, featuring shielded EEPROM cells and metal shielding for deeper layers. This design supports sensory and logical security functions without requiring backside isolation.

Replacement Considerations

The SLE5542 offers 100% functional compatibility with the SLE 4442. Designers migrating from the SLE 4442 can utilize the SLE5542 as a direct replacement within existing architectures.