Infineon Technologies CY15V104QSN-108LPXIT

Overview

CY15V104QSN-108LPXIT from Infineon is a 4-Mbit ferroelectric RAM (F-RAM) organized as 512K × 8, supporting quad SPI (QPI) up to 108 MHz SDR and 54 MHz DDR, with 100 trillion (10¹⁴) read/write endurance, 151-year data retention, and 1.71–1.89 V operation for industrial embedded logging and real-time data capture.

For engineers reviewing the CY15V104QSN-108LPXIT datasheet, CY15V104QSN-108LPXIT pinout, CY15V104QSN-108LPXIT application, or CY15V104QSN-108LPXIT equivalent, key selection considerations include instant non-volatile write capability, on-die ECC/CRC for data integrity, hardware/software write protection, and compatibility with high-speed QSPI controllers in automotive ECUs and industrial PLCs.

Technical Context

The device implements a true serial F-RAM architecture with no write latency-data commits immediately upon byte transfer without polling or erase cycles. It supports SPI modes 0 and 3 for SDR, mode 0 only for DDR, and full QPI protocol with dedicated instruction decoding logic for fast command execution.

On-die ECC operates per 8-byte unit, detecting and correcting single-bit errors while flagging dual-bit errors via status register; CRC validates raw memory array integrity independently. The 256-byte special sector survives three reflow cycles and enables secure boot parameter storage.

Key Specifications

Pinout & Package

Supplied in an 8-pin SOIC package (3.9 mm × 4.9 mm, 1.27 mm pitch), compatible with standard surface-mount assembly processes and IPC-7351B footprint standards.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar non-volatile serial memory applications.

Compared with CY15B104QSN-108LPXIT, this part trades wider voltage flexibility for tighter 1.71–1.89 V optimization; versus FM25V04-G, it delivers 2.7× higher interface speed, integrated ECC/CRC, and robustness for next-generation industrial firmware architectures.

Availability

CY15V104QSN-108LPXIT is available at Aetrix Electronics and suitable for industrial data loggers, automotive ECU parameter storage, medical calibration memory, and smart meter firmware patch staging requiring stable component supply across multi-year production cycles.

Supply support for CY15V104QSN-108LPXIT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor leader specializing in power management, sensing, connectivity, and memory solutions for industrial, automotive, and IoT applications.

This device belongs to the EXCELON™ Ultra F-RAM product line, engineered specifically to replace serial flash and EEPROM in high-write-frequency, mission-critical embedded systems demanding zero-write-latency and extreme endurance.

FAQ

Does CY15V104QSN-108LPXIT support execute-in-place (XIP) operation?

Yes, the device supports XIP for memory reads and writes via QPI interface, allowing microcontrollers to execute code directly from F-RAM without copying to internal RAM. This reduces boot time and memory footprint in resource-constrained designs, and is enabled by default in QPI mode with appropriate configuration register settings (CR2[6]=1).

How does the 256-byte special sector differ from main array memory?

The dedicated 256-byte sector is fabricated with enhanced process margin to withstand up to three Pb-free reflow cycles (260°C peak) without data loss or parametric shift, unlike the main 512K×8 array. It is accessed via separate commands (e.g., RDSFR, WRSFR) and retains factory-programmed calibration data or cryptographic keys across manufacturing and field deployment.

What happens during a 2-bit ECC error condition?

When a 2-bit error occurs within an 8-byte unit, the on-die ECC logic does not attempt correction but sets the ERF (Error Flag) bit in Status Register 2 (SR2[0]). Software must read SR2 to detect the condition and initiate recovery-such as reloading data from backup storage or triggering a system alert-since uncorrectable errors indicate potential memory degradation or external corruption.

Can the WP pin be used concurrently with software block protection?

Yes, hardware WP pin assertion and software-configured block protection (BP[2:0] bits in SR1) operate independently and cumulatively. If WP is low and BP bits are set, both mechanisms enforce write inhibition. Clearing BP bits while WP remains asserted still prevents writes, providing defense-in-depth against accidental or malicious modification of critical configuration data.