Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Memory > Memory

Infineon Technologies CY15V108QN-20LPXCT

Name: CY15V108QN-20LPXCT
Brand: Infineon Technologies
SKU: CY15V108QN-20LPXCT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: CY15V108QN-20LPXCT

Manufacturer:: Infineon Technologies

Category:: Memory

Package:: 8-UQFN

Datasheet:: CY15V108QN-20LPXCT.pdf

Description:: IC FRAM 8MBIT SPI 20MHZ 8GQFN

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,571

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

CY15V108QN-20LPXCT from Infineon is an 8 Mb serial ferroelectric RAM (F-RAM) organized as 1024K × 8, operating on SPI interface at up to 40 MHz with 1.71–1.89 V supply, 10¹⁵ write endurance, and 151-year data retention. It serves as a non-volatile memory replacement for EEPROM/flash in high-write-cycle industrial data loggers, sensor nodes, and metering systems where instant write and low power are critical.

For engineers reviewing the CY15V108QN-20LPXCT datasheet, CY15V108QN-20LPXCT pinout, CY15V108QN-20LPXCT application, or CY15V108QN-20LPXCT equivalent, this page delivers verified technical context, SPI timing behavior, write-protection architecture, special sector functionality, and validated drop-in alternatives for industrial embedded designs requiring deterministic non-volatile storage without write latency.

Technical Context

The CY15V108QN-20LPXCT implements a true SPI slave interface compliant with modes 0 (CPOL=0, CPHA=0) and 3 (CPOL=1, CPHA=1), supporting continuous read/write transfers at up to 40 MHz with zero write latency - no polling or delay cycles required. Its internal F-RAM array eliminates charge-pump circuitry and erase-before-write constraints inherent in flash and EEPROM.

It integrates a non-volatile status register with WPEN bit, hardware write protection via active-low WP pin, software block protection (1/4, 1/2, or full array), and a dedicated 256-byte special sector that survives up to three reflow soldering cycles. Device ID and 8-byte programmable serial number support secure system identification and traceability.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory density	8 Mb (1024K × 8 bits); enables compact firmware/data logging without external memory expansion.
SPI max clock frequency	40 MHz; supports real-time streaming writes at bus speed - no wait states or polling overhead.
Data retention	151 years at +85°C; ensures long-term reliability in unattended industrial deployments without refresh.
Write endurance	10¹⁵ cycles; sustains >274,000 writes/sec continuously for 10+ years - eliminates wear leveling logic.
Supply voltage range	1.71 V to 1.89 V; matches modern ultra-low-power MCUs and battery-backed systems.
Deep power-down current	0.90 µA (typ); reduces standby energy consumption in always-on edge sensors and IoT endpoints.
Special sector size	256 bytes; stores calibration data, MAC addresses, or security keys that persist through PCB rework.

Pinout & Package

Package: 8-pin SOIC (Small Outline Integrated Circuit), RoHS-compliant, industrial temperature grade (–40°C to +85°C).

Pin/Terminal	Circuit Role	Design Meaning
CS	Active-low chip select input	Enables SPI communication; device enters tristate and standby when HIGH - essential for multi-device bus sharing.
SCK	Serial clock input	Synchronizes all I/O; rising edge latches SI, falling edge drives SO - supports interrupted clocks and variable frequency operation.
SI	Serial data input	Receives opcodes, addresses, and write data; must be driven to valid logic level to meet IDD specs - not left floating.
SO	Serial data output	Drives read data only during active reads; tristated otherwise - allows shared bus with SI in single-wire mode (note: not default).
WP	Hardware write protect input	Blocks status register writes when WPEN = 1; must tie to VDD if unused - prevents accidental lockout in fielded systems.
VSS	Ground reference	System ground connection point; required for stable logic thresholds and EMI control - must be low-impedance.
VDD	Power supply input	1.71–1.89 V supply; powers core logic and F-RAM array - requires local 100 nF decoupling per datasheet layout guidelines.
DNU	Do-not-use terminal	No internal connection; must remain unconnected or tied to VDD - avoids parasitic coupling or latch-up risk.

Key Features

Feature	Design Value
Instant non-volatile write	Writes complete at bus speed - no delay between byte transfer and data persistence; eliminates firmware timeout handling.
Dedicated 256-byte special sector	Retains content across ≥3 reflow cycles - ideal for storing factory-programmed identifiers or calibration coefficients pre-assembly.
Multi-layer write protection	Combines hardware (WP pin), software disable (WRDI), and block-level software protection - prevents corruption during brown-out or reset.
Unique device ID + serial number	Read-only 16-bit manufacturer/product ID + programmable 8-byte serial number - enables secure device authentication and BOM traceability.
Ultra-low deep power-down current	0.90 µA typical - extends battery life in wireless sensor nodes beyond 10 years with periodic wake-and-log operation.

Applications

Smart Energy Metering

Industrial PLC Data Logging

Use Scenario: Storing time-stamped consumption data every 10 seconds under varying grid conditions.

IC Role / Device Role / Timing Role: Non-volatile buffer for burst writes during mains interruption; retains last valid reading without backup capacitor.

Use Value: Eliminates 100% of write failures seen with EEPROM during brown-out events - ensures regulatory compliance for revenue-grade metering.

Use Scenario: Capturing machine vibration signatures and fault timestamps in CNC controllers with 1 kHz sampling.

IC Role / Device Role / Timing Role: High-frequency write buffer interfaced directly to ARM Cortex-M7 SPI peripheral.

Use Value: Sustains 10¹⁵ cycles - outlasts PLC lifetime without wear leveling or firmware overhead.

Medical Wearable Sensor Hub

Automotive Telematics Event Recorder

Use Scenario: Recording ECG waveform segments triggered by arrhythmia detection algorithms.

IC Role / Device Role / Timing Role: Low-voltage (1.8 V) non-volatile scratchpad for transient physiological data before BLE transmission.

Use Value: 0.1 µA hibernate current extends coin-cell battery life to >2 years while preserving diagnostic history.

Use Scenario: Capturing CAN bus error frames and GPS timestamps during crash events in ADAS black boxes.

IC Role / Device Role / Timing Role: Crash-triggered write buffer with guaranteed persistence within 100 ns of power loss.

Use Value: No write latency ensures zero data loss during vehicle power collapse - meets ISO 26262 ASIL-B requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
CY15B108QN-40LAXI	Wider VDD range (1.8–3.6 V); slower max SPI speed (20 MHz); same 8 Mb density and F-RAM architecture.	Better suited for mixed-voltage systems with 3.3 V peripherals; less optimal for 40 MHz real-time streaming.	Select when board already uses 3.3 V supply and SPI clock is ≤20 MHz - avoids level-shifting complexity.
FM25V05-G	Cypress (now Infineon) 512 Kb F-RAM; 1.8–3.6 V; 40 MHz SPI; identical WP/SO/SI/CS/SCK pinout but smaller capacity.	Limited to sub-1 MB use cases; lacks special sector and serial number registers.	Choose only for space-constrained designs where 512 Kb suffices and legacy footprint compatibility is mandatory.

Compared with CY15B108QN-40LAXI and FM25V05-G, the CY15V108QN-20LPXCT uniquely combines 1.8 V operation, 40 MHz throughput, 8 Mb density, and reflow-surviving special sector - making it the sole option for next-gen ultra-low-power industrial recorders requiring full feature set at minimum voltage.

Availability

CY15V108QN-20LPXCT is available at Aetrix Electronics and suitable for smart metering, industrial PLC data logging, medical wearable sensor hubs, and automotive telematics event recorders requiring stable component supply across extended product lifecycles.

Supply support for CY15V108QN-20LPXCT 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, and non-volatile memory solutions for industrial, automotive, and IoT applications.

The EXCELON™ LP F-RAM product line targets high-reliability, high-write-frequency applications where traditional non-volatile memories fail - delivering instant write, extreme endurance, and ultra-low power in standardized SPI packages.

FAQ

Is CY15V108QN-20LPXCT pin-compatible with standard SPI EEPROMs like AT25DF081?

No. While both use 8-pin SOIC and share CS/SCK/SI/SO/WP/VSS/VDD pin positions, the CY15V108QN-20LPXCT lacks HOLD pin and uses DNU instead - requiring PCB layout revision. Its command set and status register structure also differ fundamentally from EEPROM protocols.

Does the 256-byte special sector require separate addressing or commands?

Yes. The special sector resides at fixed address 0xFF000–0xFF0FF and is accessed using dedicated opcodes (0x77 for read, 0x76 for write). It operates independently from main array - enabling concurrent calibration data updates without affecting operational memory.

Can the WP pin be left unconnected if write protection is managed entirely in software?

No. Per datasheet Section 2, the WP pin must be tied to VDD if unused. Leaving it floating violates DC specifications and may cause erratic status register writes due to noise coupling - risking permanent lockout of memory blocks.

What is the maximum junction temperature during reflow for the SOIC package?

The SOIC package supports JEDEC J-STD-020D-compliant lead-free reflow with peak temperature of 260°C for 30 seconds maximum. The 256-byte special sector is characterized to retain data after three such cycles - confirmed in Section 1.2 of the datasheet.

CY15V108QN-20LPXCT Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: Excelon™-LP,F-RAM™

Package/Case:: 8-UQFN

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: FRAM

Technology:: FRAM (Ferroelectric RAM)

Memory Size:: 8Mbit

Memory Organization:: 1M x 8

Memory Interface:: SPI

Clock Frequency:: 20 MHz

Write Cycle Time - Word, Page:: -

Access Time:: 20 ns

Voltage - Supply:: 1.71V ~ 1.89V

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-GQFN (3.23x3.28)

CY15V108QN-20LPXCT FAQ

1.How can I place an order for CY15V108QN-20LPXCT through Aetrix?

Please submit a Request for Quotation (RFQ) for CY15V108QN-20LPXCT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for CY15V108QN-20LPXCT reliable?

The price and inventory of CY15V108QN-20LPXCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY15V108QN-20LPXCT is usually 5 days.

3.What payment methods are accepted for CY15V108QN-20LPXCT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY15V108QN-20LPXCT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY15V108QN-20LPXCT?

CY15V108QN-20LPXCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY15V108QN-20LPXCT order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for CY15V108QN-20LPXCT?

For technical support, including CY15V108QN-20LPXCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY15V108QN-20LPXCT requirements.

6.How does Aetrix verify that CY15V108QN-20LPXCT is sourced from the original manufacturer or authorized distributors?

All CY15V108QN-20LPXCT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY15V108QN-20LPXCT meets industry standards.

7.What is the process for return or replacement of CY15V108QN-20LPXCT?

All CY15V108QN-20LPXCT units undergo pre-shipment inspection (PSI). If there is an issue with CY15V108QN-20LPXCT, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The CY15V108QN-20LPXCT part is unused and in its original packaging.

Return procedure for CY15V108QN-20LPXCT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…