Infineon Technologies CY15V108QN-50BKXQ

Overview

CY15V108QN-50BKXQ from Infineon is an 8-Mbit serial ferroelectric RAM (F-RAM) organized as 1024K × 8, operating at up to 50 MHz SPI clock, with 1.71–1.89 V supply and -40°C to +105°C extended industrial temperature range. It delivers instant non-volatile writes, 10¹⁴ read/write endurance, and 151-year data retention - deployed in real-time data logging, industrial PLCs, and smart metering where rapid, reliable non-volatile storage is critical.

For engineers reviewing the CY15V108QN-50BKXQ datasheet, CY15V108QN-50BKXQ pinout, CY15V108QN-50BKXQ application, or CY15V108QN-50BKXQ equivalent, key selection criteria include SPI Mode 0/3 compatibility, hardware/software write protection, 256-byte special sector survivability across reflow cycles, and ultra-low deep power-down current (1.10 µA).

Technical Context

The CY15V108QN-50BKXQ implements a true SPI slave interface with zero-write-latency architecture: data commits immediately upon byte transfer without polling, enabling deterministic timing for time-critical logging. Its F-RAM core eliminates erase-before-write overhead inherent in flash/EEPROM, supporting sustained 50 MHz bus-speed writes.

It integrates dual-layer write protection - hardware via active-low WP pin (when WPEN=1) and software via WRDI instruction and configurable block protection (1/4, 1/2, or full array). The device also embeds manufacturer ID, product ID, unique device ID, and user-writable 8-byte serial number registers.

Key Specifications

Pinout & Package

24-ball fine-pitch ball grid array (FBGA), 4 mm × 4 mm, 0.5 mm pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY15B108QN-50BKXQ, the CY15V108QN-50BKXQ offers tighter 1.8 V rail optimization and lower dynamic power, while FM25V05-G trades capacity and advanced features for legacy compatibility and lower unit cost - choice depends on voltage stability requirements and long-term data integrity needs.

Availability

CY15V108QN-50BKXQ is available at Aetrix Electronics and suitable for industrial data loggers, smart electricity meters, programmable logic controllers, and medical infusion pumps requiring stable component supply across extended temperature and long product lifecycles.

Supply support for CY15V108QN-50BKXQ 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, automotive ICs, and high-reliability memory solutions, with global manufacturing and quality certification to ISO/TS 16949 and AEC-Q200.

The EXCELON™ LP F-RAM product line targets mission-critical non-volatile data capture in industrial, energy, and medical systems where write speed, endurance, and data retention outweigh cost-per-bit considerations.

FAQ

Is CY15V108QN-50BKXQ pin-compatible with standard SPI flash devices using the same 24-ball FBGA footprint?

Yes - it uses identical 24-ball FBGA (4 mm × 4 mm, 0.5 mm pitch) and matches the industry-standard SPI pinout (CS, SCK, SI, SO, WP, VDD, VSS). No PCB redesign is needed when replacing qualifying 8-Mbit serial flash, though WP pin behavior and absence of erase commands require minor firmware adaptation.

Does the 256-byte special sector retain data during PCB rework or reballing?

Yes - the dedicated F-RAM sector is qualified to survive three full Pb-free reflow cycles (peak 260°C, per JEDEC J-STD-020). This enables post-manufacturing programming of board IDs or calibration data without risk of corruption, unlike standard flash or EEPROM sectors.

How does write protection behave when both WP pin and Status Register WPEN bit are active?

When WPEN = 1 in the Status Register, the WP pin becomes functional: pulling WP LOW disables writes to the Status Register only - all other memory writes remain enabled unless blocked by software block protection bits. WP HIGH or WPEN = 0 disables hardware protection entirely.

Can CY15V108QN-50BKXQ operate reliably at 1.71 V across the full -40°C to +105°C range?

Yes - Infineon specifies full functionality including 50 MHz SPI operation, 10¹⁴ endurance, and 151-year retention down to 1.71 V at +105°C. DC characteristics (e.g., tCSS, tSHSL) are guaranteed across this voltage/temperature envelope per datasheet Section 6 and Table 7.