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

Infineon Technologies CY15B016Q-SXET

Name: CY15B016Q-SXET
Brand: Infineon Technologies
SKU: CY15B016Q-SXET
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY15B016Q-SXET

Manufacturer:: Infineon Technologies

Category:: Memory

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: CY15B016Q-SXET.pdf

Description:: IC FRAM 16KBIT SPI 16MHZ 8SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:12,452

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Product details

Overview

CY15B016Q-SXET from Infineon Technologies (formerly Cypress) is a 16-Kbit (2K × 8) serial SPI F-RAM nonvolatile memory IC for automotive embedded systems. It delivers NoDelay™ writes, 10¹³ read/write endurance, 121-year data retention at +125 °C, and operates across –40 °C to +125 °C. Used in engine control units for real-time sensor logging where rapid, reliable nonvolatile writes are critical.

For engineers reviewing the CY15B016Q-SXET datasheet, CY15B016Q-SXET pinout, CY15B016Q-SXET application, or CY15B016Q-SXET equivalent, key selection criteria include SPI mode 0/3 compatibility, AEC-Q100 Grade 1 qualification, WP/HOLD pin behavior, and absence of write polling overhead in time-critical firmware updates.

Technical Context

The CY15B016Q-SXET implements a ferroelectric memory array with zero-latency write architecture: data commits immediately after each byte transfer without internal erase cycles or status polling. Its SPI interface supports up to 16 MHz clocking and dual-mode operation (0,0) and (1,1), enabling direct hardware replacement for legacy serial EEPROMs and flash in automotive microcontroller peripherals.

Write protection is enforced via three independent mechanisms: hardware-level WP pin assertion, software WREN/WRDI instruction control, and configurable block protection (1/4, 1/2, or full array) managed through a nonvolatile 3-bit status register. Power management relies solely on VDD monitoring-no internal regulators or power-on reset beyond basic POR circuitry.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	16 Kbit (2,048 × 8 bytes); enables compact storage of calibration tables or fault logs without external address latching.
SPI Clock Frequency	Up to 16 MHz; supports sub-μs per-byte write timing, eliminating bus arbitration delays in high-frequency CAN/FlexRay loggers.
Data Retention	121 years at +125 °C; guarantees integrity of stored vehicle VIN, mileage, or emission parameters over full automotive lifecycle.
Endurance	10¹³ read/write cycles; sustains >100 writes/sec continuously for 30+ years-exceeding EEPROM by 10 million×.
Operating Voltage	3.0 V to 3.6 V; matches standard automotive 3.3 V rail with ±5% tolerance, avoiding level-shifting in body control modules.
Temperature Range	–40 °C to +125 °C (Automotive-E); qualified per AEC-Q100 Grade 1 for under-hood ECU deployment.
Active Current	300 μA at 1 MHz; reduces MCU subsystem power budget impact during frequent telemetry writes.

Pinout & Package

8-pin Small Outline Integrated Circuit (SOIC) package with gull-wing leads, RoHS-compliant, 150 mil body width, JEDEC MS-012AC standard footprint.

Pin/Terminal	Circuit Role	Design Meaning
CS	Chip Select input	Active-low enable: must fall before each opcode; places device in standby (20 μA) when high-critical for multi-device SPI bus arbitration.
SCK	Serial clock input	Synchronizes all I/O; rising edge latches SI, falling edge drives SO; supports interrupted clocks and variable frequency (0–16 MHz).
SI	Serial input	Receives opcodes, addresses, and write data; sampled only on SCK rising edge; must be driven to valid logic level to meet IDD specs.
SO	Serial output	Drives read data on SCK falling edge; tristated during HOLD low or CS high-enables shared-bus MISO topology.
WP	Hardware write protect	Active-low lock for status register writes when WPEN = 1; must tie to VDD if unused to prevent accidental protection activation.
HOLD	Operation suspend control	Active-low pause: freezes ongoing read/write without losing state; transitions only allowed while SCK = LOW to avoid metastability.
VSS	Ground reference	System ground return path; requires low-impedance connection to minimize noise coupling into sensitive F-RAM cell array.
VDD	Power supply	3.0–3.6 V nominal; no internal regulation-external decoupling (0.1 μF ceramic + 4.7 μF tantalum) mandatory per datasheet layout guidelines.

Key Features

Feature	Design Value
NoDelay™ write architecture	Eliminates write polling and timeout loops in firmware-each byte commits instantly upon SI reception, enabling deterministic interrupt service timing.
Ferroelectric memory process	Enables 10¹³ endurance and 121-year retention without charge-pump circuits or wear leveling-reducing BOM count and firmware complexity.
Dual SPI mode support	Operates in Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1), ensuring interoperability with diverse automotive MCUs including RH850, S32K, and TC3xx families.
Three-tier write protection	Combines hardware (WP pin), instruction-based (WREN/WRDI), and block-level (status register bits) controls-preventing unintended writes during brown-out or ESD events.
AEC-Q100 Grade 1 qualification	Validated for continuous operation at +125 °C ambient, supporting placement in proximity to power converters or ignition systems without derating.

Applications

Engine Control Unit (ECU) Sensor Logging

Advanced Driver Assistance Systems (ADAS) Event Buffering

Use Scenario: Continuous recording of crankshaft position, knock sensor, and O2 sensor data during engine runtime for misfire detection and adaptive learning.

IC Role / Device Role / Timing Role: Nonvolatile scratchpad memory interfaced directly to MCU SPI peripheral; stores timestamped samples at ≥1 kHz without data loss during power interruption.

Use Value: 10¹³ endurance ensures >30 years of daily cold-start logging; NoDelay™ writes prevent sample gaps during transient load spikes.

Use Scenario: Capturing pre-crash camera frames, radar object lists, and steering angle history for post-event analysis in autonomous emergency braking systems.

IC Role / Device Role / Timing Role: High-reliability circular buffer storing last 5–10 seconds of sensor fusion data; accessed via DMA-controlled SPI bursts during fault-triggered dump.

Use Value: 16 MHz SPI bandwidth enables full 2K buffer refresh in <1.3 ms; 121-year retention preserves incident data for regulatory investigation.

Electric Powertrain Inverter Firmware Storage

Telematics Control Unit (TCU) OTA Configuration Backup

Use Scenario: Storing motor phase current calibration coefficients and thermal derating maps updated during factory programming and field recalibration.

IC Role / Device Role / Timing Role: Secure configuration store accessed during boot and runtime; protected by WP pin hardwiring and status register lock.

Use Value: Hardware write protection prevents corruption during high-noise inverter switching; AEC-Q100 Grade 1 rating allows mounting on same PCB as gate drivers.

Use Scenario: Maintaining fallback network credentials, SIM profiles, and secure boot keys during over-the-air (OTA) firmware updates in connected vehicles.

IC Role / Device Role / Timing Role: Trusted nonvolatile storage for cryptographic keys and update metadata; isolated from main application flash to survive failed OTA rollbacks.

Use Value: Zero-write-latency enables atomic key updates without disabling cellular modem; 3.0–3.6 V operation aligns with TCU PMIC output rails.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
AT25DF041A-SSH-T	4-Mbit SPI flash; requires 25 ms page program time; 100k endurance; no built-in write protection bits.	Suitable for infrequent firmware storage; unsuitable for high-frequency logging due to polling and erase latency.	Select only when cost-per-bit dominates and write frequency <100×/hour.
BR24G16FJ-WE2	16-Kbit I²C EEPROM; 1 MHz max clock; 1M endurance; 40-year retention at +85 °C.	Limited to lower-speed I²C buses; insufficient retention/endurance for under-hood deployment at +125 °C.	Acceptable for cabin modules (HVAC, infotainment) but not powertrain or ADAS.

Compared with AT25DF041A-SSH-T and BR24G16FJ-WE2, CY15B016Q-SXET uniquely combines automotive-grade temperature resilience, true zero-latency writes, and 10¹³ endurance-making it the sole option for safety-critical, high-write-rate automotive memory applications requiring guaranteed data integrity across 15+ year lifetimes.

Availability

CY15B016Q-SXET is available at Aetrix Electronics and suitable for engine control units, ADAS domain controllers, and electric powertrain inverters requiring stable component supply with long-term automotive lifecycle support.

Supply support for CY15B016Q-SXET 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 MCUs, and sensor solutions, with global R&D and manufacturing infrastructure.

CY15B016Q-SXET belongs to Infineon's F-RAM product line, engineered specifically for automotive and industrial applications demanding extreme write endurance, deterministic timing, and extended temperature reliability without battery backup.

FAQ

Is CY15B016Q-SXET pin-compatible with standard 8-pin SOIC serial EEPROMs?

Yes-CY15B016Q-SXET uses identical 8-pin SOIC (150 mil) mechanical dimensions and pin assignments (CS, SCK, SI, SO, WP, HOLD, VSS, VDD) as industry-standard serial EEPROMs and flash devices. No PCB redesign is needed for drop-in replacement, though firmware must disable write polling routines due to NoDelay™ operation.

Does CY15B016Q-SXET require external high-voltage programming circuitry?

No-CY15B016Q-SXET performs all write operations at standard VDD (3.0–3.6 V) with no charge pumps or external voltage boosters. Its ferroelectric memory cells switch polarization states using only the SPI bus voltage, eliminating HV generator components and associated EMI concerns in automotive layouts.

How does the HOLD pin behave during an active write cycle?

When HOLD is asserted low during a write, the CY15B016Q-SXET suspends the current transaction immediately after completing the current byte transfer, retains internal address and state, and ignores further SCK/CS activity until HOLD returns high. The suspended write resumes from the next byte without data corruption or retransmission overhead.

What failure modes are mitigated by the WP pin's hardware protection?

The WP pin physically disables status register writes when pulled low and WPEN = 1-preventing accidental modification of block protection settings or write-enable latch state during electrical transients, brown-out recovery, or software faults. This hardware lock remains active even if firmware crashes or resets, ensuring persistent memory protection.

CY15B016Q-SXET Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: F-RAM™

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: FRAM

Technology:: FRAM (Ferroelectric RAM)

Memory Size:: 16Kbit

Memory Organization:: 2K x 8

Memory Interface:: SPI

Clock Frequency:: 16 MHz

Write Cycle Time - Word, Page:: -

Access Time:: -

Voltage - Supply:: 2.7V ~ 3.65V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

CY15B016Q-SXET FAQ

1.How can I place an order for CY15B016Q-SXET through Aetrix?

Please submit a Request for Quotation (RFQ) for CY15B016Q-SXET 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 CY15B016Q-SXET reliable?

The price and inventory of CY15B016Q-SXET are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY15B016Q-SXET is usually 5 days.

3.What payment methods are accepted for CY15B016Q-SXET?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY15B016Q-SXET transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY15B016Q-SXET?

CY15B016Q-SXET orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY15B016Q-SXET 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 CY15B016Q-SXET?

For technical support, including CY15B016Q-SXET datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY15B016Q-SXET requirements.

6.How does Aetrix verify that CY15B016Q-SXET is sourced from the original manufacturer or authorized distributors?

All CY15B016Q-SXET 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 CY15B016Q-SXET meets industry standards.

7.What is the process for return or replacement of CY15B016Q-SXET?

All CY15B016Q-SXET units undergo pre-shipment inspection (PSI). If there is an issue with CY15B016Q-SXET, 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 CY15B016Q-SXET part is unused and in its original packaging.

Return procedure for CY15B016Q-SXET:

1.Submit a request within 90 days.

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

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