CY15B004J-SXE

Memory IC Overview

The CY15B004J-SXE is a 4-Kbit (512 × 8) serial ferroelectric random access memory (F-RAM) designed for automotive applications. It features an I2C interface with clock frequencies up to 1 MHz and operates within a voltage range of 3.0 V to 3.6 V. The device supports an extended temperature range from -40 °C to +125 °C and complies with AEC-Q100 Grade 1 standards. It offers high endurance of 10^13 read/write cycles, data retention exceeding 121 years at 85 °C, and zero-delay writes without polling requirements.

Memory IC Feature Summary

• Provides nonvolatile storage with RAM-like write speeds, eliminating internal write delays and the need for acknowledge polling typical of EEPROMs.
• Features advanced ferroelectric process technology ensuring high endurance and long-term data retention without requiring elevated internal voltages for write operations.
• Supports standard I2C protocols including legacy timings for 100 kHz and 400 kHz, allowing direct hardware replacement for serial EEPROMs.

Memory IC Applications

• Data logging systems requiring frequent or rapid write cycles
• Industrial controls where EEPROM write latency causes data loss
• Automotive electronics compliant with AEC-Q100 Grade 1 standards

Memory IC Procurement Notes

Verify the specific suffix 'SXE' corresponds to the 8-pin SOIC package and lead finish specifications in the official Infineon ordering guide. Confirm that the Automotive-E grade designation aligns with your project's thermal and reliability requirements. Ensure compatibility with the I2C bus voltage levels and pull-up resistor configurations specified in the datasheet electrical characteristics.

Memory IC Selection Notes

Select this component when replacing serial EEPROMs to eliminate write delay overhead and improve system throughput. Consider the 4-Kbit capacity and I2C interface constraints for address mapping. Evaluate the power consumption profiles against active and standby current limits defined for the target operating frequency and temperature range.

Memory IC Part Context

This part belongs to the Cypress Semiconductor F-RAM family, now integrated into the Infineon Technologies portfolio. The CY15B004J series utilizes ferroelectric memory technology to provide nonvolatile storage with high speed and endurance. The product maintains continuity under Infineon branding while preserving original functional specifications and ordering codes.

Memory IC Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.

Memory IC FAQ

Does the CY15B004J require acknowledge polling after write operations?

No, the device performs writes at bus speed. The write operation completes before the acknowledge is sent, making polling unnecessary.

How many devices can be connected on the same I2C bus?

Up to four CY15B004J devices can reside on the same I2C bus by assigning different values to the external address pins A2-A1.

What is the function of the WP pin?

The Write Protect (WP) pin protects the memory map. When tied to VDD, all addresses are write-protected; when connected to ground, all addresses are write-enabled.