SLE 4418 M2.2

Application Specific Microcontrollers Overview

The Infineon SLE 4418 M2.2 is an intelligent 1-Kbit EEPROM presented in a wire-bonded M2.2 module format, designed for embedding in plastic cards. It features a 1024 x 8 bit memory organization with byte-wise addressing and a serial three-wire bus interface compliant with ISO standard 7816. The device operates at a supply voltage of 5 V (range 4.5–5.5 V) with a maximum clock frequency of 20 kHz. Key specifications include a minimum of 10^4 write/erase cycles, data retention for at least ten years, and irreversible byte-wise write protection capabilities.

Application Specific Microcontrollers Feature Summary

• 1024 x 8 bit EEPROM organization with byte-wise addressing
• Irreversible byte-wise write protection via one-time programmable protect bits
• Serial three-wire bus interface compatible with ISO 7816 synchronous transmission
• End-of-programming indication on the data output line

Application Specific Microcontrollers Applications

• Embedding in plastic smart cards
• Secure identification systems requiring write-protect functions
• Data storage applications needing long-term data retention

Application Specific Microcontrollers Procurement Notes

Verify that the M2.2 package designation corresponds to the specific wire-bonded module variant required for card embedding. Confirm compatibility with the host reader's 5 V supply and 20 kHz clock limits. Ensure the ordering suffix matches the exact revision and packaging specifications defined by the manufacturer, as variations may exist between chip and module forms.

Application Specific Microcontrollers Selection Notes

Select the SLE 4418 M2.2 when irreversible write protection is required without the need for a Programmable Security Code (PSC). If PSC-based access control is necessary, consider the SLE 4428 variant instead. Ensure the application environment stays within the -35°C to +100°C operating temperature range and adheres to the 5 V supply voltage constraints.

Application Specific Microcontrollers Part Context

The SLE 4418 M2.2 is part of the Siemens/Infineon SLE 44xx family of intelligent EEPROMs. The 'M2.2' suffix specifically denotes the wire-bonded module package suitable for direct integration into smart card substrates, distinct from the bare die or standard chip packages offered for other variants in the series.

Application Specific Microcontrollers Replacement Considerations

The SLE 4428 M2.2 offers identical hardware but includes PSC verification logic. Other SLE 44xx series components may share pinouts but differ in security features or package types; verify functional equivalence before substitution.