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

Infineon Technologies CY15B108QI-20LPXC

Name: CY15B108QI-20LPXC
Brand: Infineon Technologies
SKU: CY15B108QI-20LPXC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY15B108QI-20LPXC

Manufacturer:: Infineon Technologies

Category:: Memory

Package:: 8-UQFN

Datasheet:: CY15B108QI-20LPXC.pdf

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

Quantity:: RFQ Add To RFQ list

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Inventory:1,043

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Product details

Overview

CY15B108QI-20LPXC from Infineon is an 8-Mbit serial ferroelectric RAM (F-RAM) organized as 1024K × 8, operating over SPI at up to 20 MHz with 1.8–3.6 V supply, 10¹⁵ write endurance, and 151-year data retention. It serves as a nonvolatile 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 CY15B108QI-20LPXC datasheet, CY15B108QI-20LPXC pinout, CY15B108QI-20LPXC application, or CY15B108QI-20LPXC equivalent, key selection criteria include SPI mode 0/3 compatibility, hardware/software write protection, dedicated 256-byte special sector survivability across three reflow cycles, and deep power-down current of 0.90 µA.

Technical Context

The CY15B108QI-20LPXC implements a true SPI slave interface with zero-latency writes-no polling required-and supports full-duplex data transfer synchronized to SCK rising/falling edges. Its ferroelectric memory core eliminates erase-before-write overhead and enables byte-level random access without block management.

It integrates dual-layer write protection: hardware-based via active-low WP pin (when WPEN=1) and software-configurable block protection (1/4, 1/2, or full array), plus read-only Device ID and writable 8-byte serial number registers for traceability and system identification.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory density	8 Mbit (1024K × 8); supports byte-addressable random reads/writes without page or sector erase.
SPI speed	Up to 20 MHz; enables 2.5 MB/s sustained write throughput with no wait states.
Endurance	10¹⁵ read/write cycles; supports continuous logging at 100 Hz for >317 years without wear-out.
Data retention	151 years at +85°C; guarantees nonvolatile storage without refresh or backup power.
Supply voltage	1.8 V to 3.6 V; compatible with 1.8 V, 2.5 V, and 3.3 V logic domains without level shifters.
Deep power-down current	0.90 µA (typ); enables multi-year battery operation in energy-harvesting or coin-cell-powered devices.
Inrush current control	1.6 mA (typ) at power-up; prevents voltage droop and brownout in shared rail systems.

Pinout & Package

Package: 8-pin ultra-thin fine-pitch land grid array (UFLGA), 2.0 mm × 2.5 mm × 0.5 mm, 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 standby and tristates SO when HIGH.
SCK	Serial clock input	Drives all timing; inputs sampled on rising edge, outputs driven on falling edge (SPI modes 0/3).
SI	Serial data input	Receives opcodes, addresses, and write data; must be held valid to meet IDD specs.
SO	Serial data output	Drives read data during memory/SR reads; tristated otherwise; shares SI pin in single-wire mode.
WP	Write protect input	Hardware lock for Status Register when WPEN=1; must tie to VDD if unused.
DNU	Do-not-use terminal	No internal connection; may float or tie to VDD; not electrically functional.
VSS	Ground reference	Primary return path for all currents; requires low-impedance PCB connection to system ground.
VDD	Power supply input	Supplies core and I/O; supports 1.8–3.6 V; decoupling capacitor required per datasheet layout guidelines.

Key Features

Feature	Design Value
Instant non-volatile write	Writes complete at bus speed-no delay, no polling, no erase-enabling deterministic real-time logging.
Dedicated 256-byte special sector	Retains data through ≥3 standard reflow cycles (260°C peak), enabling board-level serialization and calibration storage.
Multi-layer write protection	Combines hardware (WP pin) and software (WRDI, BP bits) to prevent accidental writes across full, half, or quarter array.
Unique device identification	Read-only Manufacturer ID + Product ID + Unique Device ID + writable 8-byte serial number for firmware binding and traceability.
Low-power operational modes	Supports standby (3.5 µA), deep power-down (0.90 µA), and hibernate (0.1 µA) for ultra-low-energy system design.

Applications

Smart Energy Metering

Industrial PLC Data Logging

Use Scenario: Continuous timestamped energy consumption recording with 1-second resolution and tamper-proof audit trail.

IC Role / Device Role / Timing Role: Nonvolatile memory storing billing data, firmware logs, and cryptographic keys with guaranteed integrity across power loss.

Use Value: Eliminates flash wear leveling overhead and enables 100% duty-cycle logging at 1 kHz without degradation over 20+ years.

Use Scenario: Real-time process variable capture (temperature, pressure, flow) in factory automation controllers with cyclic redundancy.

IC Role / Device Role / Timing Role: High-endurance buffer for volatile sensor data before batch upload to cloud or local HMI.

Use Value: Supports 10¹⁵ writes-equivalent to 317 years of continuous 100-Hz logging-without failure or data corruption.

Medical Sensor Nodes

Automotive Telematics Event Recorders

Use Scenario: Wearable ECG patch capturing raw waveform data during clinical trials with battery life >3 months per charge.

IC Role / Device Role / Timing Role: Low-voltage, low-power nonvolatile storage for time-critical physiological samples between BLE transmissions.

Use Value: Deep power-down current of 0.90 µA extends coin-cell life while preserving data integrity during sleep intervals.

Use Scenario: Crash-triggered event capture in ADAS black boxes, storing pre- and post-impact CAN bus snapshots.

IC Role / Device Role / Timing Role: Instant-write memory ensuring zero-data-loss capture within 100 ns of power interruption or reset.

Use Value: No write latency eliminates risk of missing first 50 ms of critical post-crash diagnostics due to flash programming delays.

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial nonvolatile memory applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
CY15B108QN-20LPXC	Same die, 8-pin SOIC package (5.0 mm × 4.0 mm); no UFLGA footprint compatibility.	Preferred for prototyping or legacy PCBs requiring through-hole or gull-wing assembly.	Select when board space allows larger package and reflow compatibility is not required.
FM25V05-G	Cypress (now Infineon) 512-Kbit F-RAM; half density, same 20 MHz SPI, but lacks special sector and unique ID registers.	Suitable for cost-sensitive, lower-capacity applications where serialization and reflow resilience are not needed.	Choose only if 4 Mb is sufficient and 256-byte reflow-hardened sector is unnecessary.

Compared with CY15B108QN-20LPXC and FM25V05-G, the CY15B108QI-20LPXC uniquely combines UFLGA miniaturization, full 8-Mbit density, dedicated reflow-survivable sector, and full-device unique ID-making it optimal for space-constrained, high-reliability industrial edge nodes.

Availability

CY15B108QI-20LPXC is available at Aetrix Electronics and suitable for smart metering, industrial data loggers, medical wearables, and automotive telematics requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for CY15B108QI-20LPXC 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 markets.

The EXCELON™ LP F-RAM product line delivers instant-write, high-endurance nonvolatile memory targeting applications where flash and EEPROM fail under frequent write stress or power-interruption conditions.

FAQ

Is CY15B108QI-20LPXC pin-compatible with standard SPI EEPROMs or flash devices?

No-it shares the same 8-pin SPI pinout (CS, SCK, SI, SO, WP, VSS, VDD, DNU) but differs electrically and functionally: no write latency, no erase commands, no status polling, and no voltage-programming requirements. Hardware integration is drop-in for footprint, but firmware must replace EEPROM/flash command sequences with F-RAM opcodes.

What is the purpose of the DNU pin, and how should it be handled on the PCB?

The DNU (Do Not Use) pin has no internal connection. Per Infineon's datasheet, it may be left floating or tied to VDD-neither choice affects functionality. Leaving it unconnected simplifies layout; tying to VDD avoids potential noise coupling in high-EMI environments, though not required.

Does the 151-year data retention apply at maximum operating temperature?

Yes-the 151-year retention is specified at +85°C (industrial max), verified per JEDEC JESD22-A117. At lower temperatures (e.g., +25°C), retention exceeds 1,000 years. This rating assumes proper soldering, no mechanical stress, and operation within absolute maximum ratings.

Can the special sector be used for secure key storage, and is its content protected against readout?

The 256-byte special sector is readable and writable via standard SPI commands-no hardware read protection. Its value lies in reflow survivability, not security. For secure key storage, combine it with external encryption or use Infineon's OPTIGA™ secure elements alongside this F-RAM for trusted execution and key wrapping.

CY15B108QI-20LPXC Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: Excelon™-LP,F-RAM™

Package/Case:: 8-UQFN

Packaging:: Tray

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:: -

Voltage - Supply:: 1.8V ~ 3.6V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

CY15B108QI-20LPXC FAQ

1.How can I place an order for CY15B108QI-20LPXC through Aetrix?

Please submit a Request for Quotation (RFQ) for CY15B108QI-20LPXC 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 CY15B108QI-20LPXC reliable?

The price and inventory of CY15B108QI-20LPXC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY15B108QI-20LPXC is usually 5 days.

3.What payment methods are accepted for CY15B108QI-20LPXC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY15B108QI-20LPXC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY15B108QI-20LPXC?

CY15B108QI-20LPXC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY15B108QI-20LPXC 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 CY15B108QI-20LPXC?

For technical support, including CY15B108QI-20LPXC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY15B108QI-20LPXC requirements.

6.How does Aetrix verify that CY15B108QI-20LPXC is sourced from the original manufacturer or authorized distributors?

All CY15B108QI-20LPXC 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 CY15B108QI-20LPXC meets industry standards.

7.What is the process for return or replacement of CY15B108QI-20LPXC?

All CY15B108QI-20LPXC units undergo pre-shipment inspection (PSI). If there is an issue with CY15B108QI-20LPXC, 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 CY15B108QI-20LPXC part is unused and in its original packaging.

Return procedure for CY15B108QI-20LPXC:

1.Submit a request within 90 days.

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

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