CY15B104Q-SXI

Memory IC Overview

The CY15B104Q-SXI is a 4-Mbit (512 K × 8) serial ferroelectric random access memory (F-RAM) manufactured by Infineon Technologies. It utilizes an advanced ferroelectric process to provide nonvolatile data storage with direct hardware compatibility for serial flash and EEPROM replacements. The device features a high-speed Serial Peripheral Interface (SPI) supporting frequencies up to 40 MHz, operating in SPI modes 0 and 3. It offers exceptional endurance of 100 trillion read/write cycles and a data retention period of 151 years. The component operates within a supply voltage range of 2.0 V to 3.6 V and supports an industrial temperature range from -40 °C to +85 °C. It is housed in an 8-pin SOIC package.

Memory IC Feature Summary

• NoDelay™ write technology enables immediate data commitment at bus speed without polling delays or page buffer constraints.
• High-endurance ferroelectric process supports 100 trillion read/write cycles, significantly exceeding standard EEPROM capabilities.
• Sophisticated multi-tiered write protection scheme utilizing hardware WP pin control and software-configurable block protection via the Status Register.
• Low-power operation includes active current consumption of 300 µA at 1 MHz, typical standby current of 100 µA, and sleep mode current of 3 µA.

Memory IC Applications

• Data collection systems requiring frequent or rapid writes where write cycle criticality is paramount.
• Industrial control applications demanding long write times avoidance to prevent data loss during power interruptions.
• Hardware drop-in replacement designs for serial flash and EEPROM in existing PCB layouts.

Memory IC Procurement Notes

Verify the specific ordering suffix 'SXI' corresponds to the 8-pin SOIC package configuration as documented in the official datasheet. Confirm that the component status is acceptable for the intended design lifecycle, noting that availability may vary. Ensure interface timing parameters align with the host microcontroller's SPI controller specifications before finalizing procurement.

Memory IC Selection Notes

Select this component when application requirements demand extreme write endurance and zero-write-latency performance compared to traditional nonvolatile memories. It is suitable for designs needing low-voltage operation between 2.0 V and 3.6 V. Consider the 8-pin SOIC package constraints regarding board space and thermal dissipation. Verify that the host system can support SPI Mode 0 or Mode 3 protocols for optimal integration.

Memory IC Part Context

The CY15B104Q belongs to the Cypress/Infineon F-RAM family, specifically designed to bridge the gap between volatile RAM speed and nonvolatile storage reliability. This series leverages ferroelectric technology to eliminate the complex write sequences required by flash memory. The CY15B104Q variant focuses on 4-Mbit density with serial interface simplicity, targeting cost-sensitive and space-constrained embedded systems requiring robust data integrity.

Memory IC Replacement Considerations

The datasheet identifies the CY15B104Q as a direct hardware replacement for serial flash and EEPROM devices with compatible pinouts. No specific alternative part numbers are listed in the provided documentation for direct substitution.