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

Infineon Technologies CY15E064Q-SXE

Name: CY15E064Q-SXE
Brand: Infineon Technologies
SKU: CY15E064Q-SXE
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY15E064Q-SXE

Manufacturer:: Infineon Technologies

Category:: Memory

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

Datasheet:: CY15E064Q-SXE.pdf

Description:: IC FRAM 64KBIT SPI 16MHZ 8SOIC

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Inventory:318

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Product details

Overview

CY15E064Q-SXE from Infineon Technologies (formerly Cypress) is a 64-Kbit (8K × 8) automotive-grade serial SPI F-RAM with 10¹³ read/write endurance, 121-year data retention at +85 °C, and NoDelay™ write capability. It operates from 4.5 V to 5.5 V across –40 °C to +125 °C, supports SPI modes 0 and 3 up to 16 MHz, and serves as a hardware drop-in replacement for serial EEPROM/flash in real-time data logging systems.

For engineers reviewing the CY15E064Q-SXE datasheet, CY15E064Q-SXE pinout, CY15E064Q-SXE application, or CY15E064Q-SXE equivalent, key selection criteria include guaranteed AEC-Q100 Grade 1 compliance, zero-write-latency operation, 10 µA standby current at +85 °C, and hardware/software write protection via WP pin and status register configuration.

Technical Context

The CY15E064Q-SXE implements a ferroelectric memory array with direct byte-addressable SPI access, eliminating erase cycles and polling overhead. Its internal architecture includes an 8K × 8 nonvolatile F-RAM core, a 3-bit status register with write-protect enable (WPEN), and dedicated control logic for opcode decoding, address latching, and I/O timing synchronization.

It functions strictly as an SPI slave device with fixed 2-byte addressing (13-bit effective), MSB-first transmission, and dual-mode clocking (SCK rising-edge input latch, falling-edge output drive). The HOLD pin enables deterministic transaction suspension without clock or CS dependency, and the WP pin provides hardware-level status register lock independent of software commands.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory size	64 Kbit (8K × 8), enabling compact storage for firmware patches or calibration tables in space-constrained ECUs
Endurance	10¹³ read/write cycles - supports >100 years of continuous 100-Hz logging at automotive duty cycle
Data retention	121 years at +85 °C - eliminates periodic refresh or backup power requirements in always-on modules
SPI speed	Up to 16 MHz - achieves 1.6 MB/s sequential write throughput without wait states
Operating voltage	4.5 V to 5.5 V - compatible with legacy 5-V automotive power rails and avoids level-shifting complexity
Temperature range	–40 °C to +125 °C (AEC-Q100 Grade 1) - qualified for engine bay and transmission control unit placement
Standby current	10 µA (typ) at +85 °C - reduces quiescent power in sleep-mode vehicle networks

Pinout & Package

Package: 8-pin Small Outline Integrated Circuit (SOIC), surface-mount, RoHS-compliant, body width 3.9 mm.

Pin/Terminal	Circuit Role	Design Meaning
CS	Chip Select input	Active-low enable; places device in standby when HIGH, disables all I/O and tristates SO
SCK	Serial clock input	Synchronizes all SPI transfers; inputs latched on rising edge, outputs driven on falling edge
SI	Serial input	Receives opcodes, addresses, and write data; must be driven to valid logic level to meet IDD specs
SO	Serial output	Drives read data during active transactions; high-impedance otherwise, including during HOLD assertion
WP	Write protect input	Hardware lock for status register when WPEN = 1; must be tied to VDD if unused
HOLD	Transaction suspend input	Pauses ongoing SPI operation without clock or CS dependency; transitions only allowed while SCK = LOW
VSS	Ground	Reference return path for all internal circuitry; must connect to system ground plane
VDD	Power supply	Primary 4.5–5.5 V supply; no internal regulation - requires stable external rail per datasheet tolerances

Key Features

Feature	Design Value
NoDelay™ write	Immediate byte-level write completion at bus speed - eliminates firmware polling loops and improves deterministic response in safety-critical logging
10¹³ endurance	10 million × higher than EEPROM - enables lifetime data capture in telematics black boxes without wear leveling
Dual SPI mode support	Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1) - ensures interoperability with diverse MCU SPI peripherals without reconfiguration
Hardware + software write protection	WP pin locks status register; software block protection covers 1/4, 1/2, or full array - prevents accidental overwrites in multi-threaded ECU firmware
AEC-Q100 Grade 1 qualification	Validated for automotive under-hood operation - meets reliability, thermal, and ESD requirements without additional qualification effort

Applications

Engine Control Unit (ECU) Calibration Storage

Advanced Driver Assistance Systems (ADAS) Event Logging

Use Scenario: Storing adaptive fuel trim values and misfire counters that update every engine cycle under varying thermal loads.

IC Role / Device Role / Timing Role: Nonvolatile parameter store with sub-microsecond write latency and guaranteed retention across 15-year vehicle life.

Use Value: Eliminates flash wear-out risk and avoids 10–100 ms erase delays that could miss critical combustion events during transient operation.

Use Scenario: Capturing radar fusion timestamps and camera frame metadata during collision avoidance maneuvers.

IC Role / Device Role / Timing Role: High-speed circular buffer for time-stamped sensor metadata with deterministic write timing.

Use Value: Supports 10 kHz logging bursts without data loss - enabled by 16 MHz SPI and zero-latency writes.

Electric Power Steering (EPS) Fault History

Body Control Module (BCM) Configuration Backup

Use Scenario: Recording torque sensor anomalies and motor phase errors during steering assist events.

IC Role / Device Role / Timing Role: Fail-safe event recorder with AEC-Q100 Grade 1 assurance and 121-year retention at junction temperature.

Use Value: Maintains diagnostic integrity over full vehicle lifecycle without battery-backed SRAM or complex ECC management.

Use Scenario: Preserving door lock programming, lighting profiles, and seat position settings across ignition cycles.

IC Role / Device Role / Timing Role: Low-power configuration vault accessed infrequently but requiring instant write on user input.

Use Value: Draws only 10 µA standby current while retaining settings - extends battery life in parked vehicle scenarios.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
FM25V05-G	512-Kbit SPI F-RAM, 2.7–3.6 V operation, 40 MHz max clock, SOIC-8 package	Higher density and speed but incompatible voltage range; requires level-shifting in 5-V automotive systems	Select when migrating to 3.3-V domains with need for larger log buffers and faster throughput
AT25DF041A-SHN-T	4-Mbit SPI flash, 2.7–3.6 V, 80 MHz, 100k write cycles, requires sector erase before write	Lower endurance and 20+ ms erase latency; lacks AEC-Q100 Grade 1 qualification	Acceptable only for infrequent configuration storage where write latency and longevity are noncritical

Compared with FM25V05-G and AT25DF041A-SHN-T, CY15E064Q-SXE uniquely delivers 5-V compatibility, AEC-Q100 Grade 1 certification, and true zero-latency writes - making it the only option for safety-relevant, high-frequency logging in legacy 5-V automotive platforms.

Availability

CY15E064Q-SXE is available at Aetrix Electronics and suitable for engine control units, ADAS event recorders, and electric power steering fault history loggers requiring stable component supply across extended automotive product lifecycles.

Supply support for CY15E064Q-SXE 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 global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive microcontrollers, and secure connectivity solutions.

CY15E064Q-SXE belongs to Infineon's automotive F-RAM product line, engineered specifically for deterministic, high-endurance nonvolatile storage in safety-critical vehicle subsystems operating under extreme thermal and electrical stress.

FAQ

Is CY15E064Q-SXE pin-compatible with standard SPI EEPROMs like AT25040?

Yes - CY15E064Q-SXE uses the same 8-pin SOIC footprint and SPI command set (WREN, WRDI, RDSR, WRSR, READ, WRITE) as legacy serial EEPROMs. It supports identical opcodes and address formats, enabling direct PCB-level replacement without layout changes or firmware rework.

Does CY15E064Q-SXE require external capacitors or power sequencing?

No - the device has no internal charge pumps or regulators and draws only 300 µA active current at 1 MHz. A single 0.1 µF ceramic decoupling capacitor placed near VDD/VSS is sufficient; no power-up sequencing or reset timing constraints apply beyond standard 5-V rail stability.

How does the HOLD pin behave during an ongoing write operation?

When HOLD is asserted LOW during a write, the device suspends the current transaction immediately after completing the current byte transfer. SCK and CS are ignored until HOLD returns HIGH, then the operation resumes from the next bit - preserving data integrity without corruption or restart overhead.

Can CY15E064Q-SXE be used in systems requiring ISO 26262 ASIL-B compliance?

While CY15E064Q-SXE itself is not ASIL-certified, its AEC-Q100 Grade 1 qualification, 10¹³ endurance, and deterministic NoDelay™ writes make it suitable for ASIL-B data storage layers when integrated with appropriate system-level fault detection, such as CRC-protected logging and watchdog-monitored write verification.

CY15E064Q-SXE Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: F-RAM™

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

Packaging:: Tube

Product Status:: Active

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: FRAM

Technology:: FRAM (Ferroelectric RAM)

Memory Size:: 64Kbit

Memory Organization:: 8K x 8

Memory Interface:: SPI

Clock Frequency:: 16 MHz

Write Cycle Time - Word, Page:: -

Access Time:: -

Voltage - Supply:: 4.5V ~ 5.5V

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

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

CY15E064Q-SXE FAQ

1.How can I place an order for CY15E064Q-SXE through Aetrix?

Please submit a Request for Quotation (RFQ) for CY15E064Q-SXE 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 CY15E064Q-SXE reliable?

The price and inventory of CY15E064Q-SXE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY15E064Q-SXE is usually 5 days.

3.What payment methods are accepted for CY15E064Q-SXE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY15E064Q-SXE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY15E064Q-SXE?

CY15E064Q-SXE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY15E064Q-SXE 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 CY15E064Q-SXE?

For technical support, including CY15E064Q-SXE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY15E064Q-SXE requirements.

6.How does Aetrix verify that CY15E064Q-SXE is sourced from the original manufacturer or authorized distributors?

All CY15E064Q-SXE 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 CY15E064Q-SXE meets industry standards.

7.What is the process for return or replacement of CY15E064Q-SXE?

All CY15E064Q-SXE units undergo pre-shipment inspection (PSI). If there is an issue with CY15E064Q-SXE, 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 CY15E064Q-SXE part is unused and in its original packaging.

Return procedure for CY15E064Q-SXE:

1.Submit a request within 90 days.

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

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