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

Infineon Technologies CY15E016Q-SXAT

Name: CY15E016Q-SXAT
Brand: Infineon Technologies
SKU: CY15E016Q-SXAT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY15E016Q-SXAT

Manufacturer:: Infineon Technologies

Category:: Memory

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

Datasheet:: CY15E016Q-SXAT.pdf

Description:: IC FRAM 16KBIT SPI 20MHZ 8SOIC

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Product details

Overview

CY15E016Q-SXAT from Cypress Semiconductor is a 16-Kbit (2K × 8) serial SPI F-RAM nonvolatile memory with automotive-grade qualification (–40 °C to +85 °C), 20 MHz max SPI clock, NoDelay™ write capability, and 10¹⁴ read/write endurance. It serves as a hardware-compatible replacement for serial EEPROM/flash in data-logging and real-time control systems requiring rapid, reliable nonvolatile writes.

For engineers reviewing the CY15E016Q-SXAT datasheet, CY15E016Q-SXAT pinout, CY15E016Q-SXAT application, or CY15E016Q-SXAT equivalent, key selection criteria include SPI mode 0/3 compatibility, WP/HOLD pin behavior, 4.5–5.5 V supply range, 151-year data retention, and absence of write polling overhead in time-critical firmware designs.

Technical Context

The CY15E016Q-SXAT implements a ferroelectric memory array with zero-latency write architecture: each byte is committed immediately upon successful SPI transfer without internal write cycles or status polling. Its instruction decoder supports standard SPI opcodes (WREN, WRDI, RDSR, WRSR, READ, WRITE) and interprets upper address bits as "don't care" for backward-compatible 11-bit addressing.

Write protection is implemented via dual-layer control: hardware-level WP pin assertion (active-low, latched when WPEN = 1) and software-configurable block protection (1/4, 1/2, or full array) through the 3-bit BP[2:0] field in the nonvolatile status register. The device operates exclusively as an SPI slave with no internal power management beyond POR.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory size	16 Kbit (2,048 × 8 bytes); enables compact storage for firmware parameters or sensor logs without external address latching.
SPI clock frequency	Up to 20 MHz; supports sub-μs per-byte transfers, eliminating bottlenecks in high-throughput logging.
Write endurance	10¹⁴ cycles; sustains >27,000 writes/sec continuously for 10+ years-critical for battery-backed event counters.
Data retention	151 years at +85 °C; guarantees integrity across full automotive lifecycle without refresh or wear leveling.
Supply voltage	4.5 V to 5.5 V; compatible with legacy 5 V microcontroller I/O domains without level-shifting.
Operating temperature	–40 °C to +85 °C (Automotive-A grade); qualified for under-hood and chassis-mounted ECUs.
Active current	250 μA at 1 MHz; reduces average power in duty-cycled telemetry nodes.

Pinout & Package

8-pin SOIC (Small Outline Integrated Circuit) package, RoHS-compliant, surface-mountable with standard reflow profiles.

Pin/Terminal	Circuit Role	Design Meaning
CS	Chip Select (active-low input)	Activates SPI interface and enables SCK detection; forces SO into high-Z and disables internal logic when HIGH.
SCK	Serial Clock input	Synchronizes all SI/SO transfers; rising edge latches input, falling edge drives output (SPI modes 0/3).
SI	Serial Input (MOSI)	Receives opcodes, addresses, and write data; must be driven to valid logic level to meet IDD specs.
SO	Serial Output (MISO)	Drives read data only during active READ operations; tristated otherwise including during HOLD assertion.
WP	Write Protect (active-low input)	Blocks Status Register writes when WPEN = 1; must be tied to VDD if unused to prevent accidental lockout.
HOLD	Operation suspend (active-low input)	Pauses ongoing read/write mid-transfer; requires SCK LOW during assertion/deassertion to avoid bus corruption.
VSS	Ground reference	System ground return path; must be low-impedance connection to prevent noise-induced status register corruption.
VDD	Power supply input	5 V nominal supply; device lacks internal regulators-external decoupling (0.1 μF ceramic) required per datasheet.

Key Features

Feature	Design Value
NoDelay™ write architecture	Eliminates write polling and timeout loops in firmware-each byte written at bus speed with deterministic completion.
10¹⁴ endurance cycles	Enables continuous logging at 100 Hz for >30 years without wear-out concerns-no firmware wear-leveling needed.
Dual-mode SPI compatibility	Supports both Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1), ensuring interoperability with diverse MCU SPI peripherals.
Hardware + software write protection	WP pin blocks status register writes while BP bits enable selective array locking-prevents accidental overwrites in field-deployed units.
151-year data retention	Validated at +85 °C; ensures parameter storage integrity across vehicle lifetime without periodic refresh or backup power.

Applications

Automotive Telematics Logging

Industrial PLC Parameter Storage

Use Scenario: Capturing GPS position, speed, and diagnostic trouble codes (DTCs) at 10–50 Hz during vehicle operation.

IC Role / Device Role / Timing Role: Nonvolatile scratchpad memory interfacing directly to CAN-to-SPI gateway MCU.

Use Value: No data loss during ignition cycling due to zero-write-delay writes and guaranteed 151-year retention at under-hood temperatures.

Use Scenario: Storing calibration coefficients, runtime counters, and configuration flags in modular I/O controllers.

IC Role / Device Role / Timing Role: SPI-configurable persistent memory co-located with ARM Cortex-M7 real-time core.

Use Value: Eliminates 5–50 ms flash erase delays during hot-plug module reconfiguration, enabling <100 μs state save/restore.

Medical Infusion Pump Event History

Smart Meter Firmware Configuration

Use Scenario: Recording dose delivery timestamps, occlusion events, and battery voltage snapshots every 2 seconds.

IC Role / Device Role / Timing Role: Safety-critical audit trail memory with tamper-resistant write protection.

Use Value: WP pin + BP bits prevent unauthorized modification of stored clinical history; 10¹⁴ cycles exceed IEC 62304 lifetime requirements.

Use Scenario: Holding tariff schedules, meter ID, and cryptographic keys in ANSI C12.19-compliant utility meters.

IC Role / Device Role / Timing Role: Secure, long-life configuration store accessed during power-up and firmware updates.

Use Value: 4.5–5.5 V operation matches meter's regulated 5 V rail; 151-year retention exceeds 20-year deployment mandate.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
FM25V01-G (Cypress)	1-Mbit F-RAM, 3.0–3.6 V supply, 40 MHz SPI, SOIC-8 but different pinout (VDD/VSS swapped)	Higher density and speed, but incompatible voltage and pin mapping-requires PCB redesign.	Select only when upgrading capacity and migrating to 3.3 V systems with layout flexibility.
AT25DF041A-SSH-T (Adesto)	4-Mbit serial flash, 2.7–3.6 V, 80 MHz, requires 25 ms sector erase before write, 100k endurance	Lower cost per bit but introduces write latency and endurance limitations unsuitable for high-frequency logging.	Acceptable only for infrequent configuration storage where write speed and cycle count are non-critical.

Compared with FM25V01-G and AT25DF041A-SSH-T, CY15E016Q-SXAT uniquely delivers automotive-qualified 5 V operation, pin-compatible EEPROM/flash replacement, and deterministic sub-microsecond writes-making it optimal for legacy 5 V ECU designs needing reliability over raw density or speed.

Availability

CY15E016Q-SXAT is available at Aetrix Electronics and suitable for automotive telematics logging, industrial PLC parameter storage, and medical infusion pump event history requiring stable component supply across extended production lifecycles.

Supply support for CY15E016Q-SXAT 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

Cypress Semiconductor (now part of Infineon Technologies) designs high-reliability nonvolatile memory and programmable system-on-chip solutions for automotive, industrial, and IoT applications.

CY15E016Q belongs to Cypress's automotive-qualified F-RAM product line, engineered specifically to replace serial EEPROM/flash in safety-critical, high-write-frequency applications where data integrity and timing determinism are mandatory.

FAQ

Does CY15E016Q-SXAT require external pull-up resistors on SI, SO, or HOLD pins?

No external pull-ups are required on SI or SO-these pins are actively driven by the device or host. HOLD and WP pins must be tied to VDD if unused, per datasheet Section 3 (Pin Definitions), to prevent floating inputs that could trigger unintended hold states or disable write protection.

Can CY15E016Q-SXAT operate at 3.3 V?

No. The device is specified only for 4.5 V to 5.5 V operation (DC Electrical Characteristics, Table 1). Attempting 3.3 V operation violates absolute maximum ratings and results in undefined behavior, including failed status register reads and inconsistent write completion.

Is the HOLD function compatible with SPI mode 3 (CPOL=1, CPHA=1)?

Yes. HOLD operates independently of SPI mode-asserting HOLD LOW suspends any ongoing operation (READ/WRITE) regardless of CPOL/CPHA setting. However, all HOLD transitions must occur while SCK is LOW, as stated in Pin Definitions (Page 3).

How is the 151-year data retention validated?

Data retention is extrapolated from accelerated high-temperature testing at +85 °C per JEDEC JESD22-A117, with failure modeling confirming >151 years at that temperature. Full validation methodology and test conditions are detailed in the Data Retention and Endurance table (Page 12) of Document 002-10236 Rev. *B.

CY15E016Q-SXAT 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:: 20 MHz

Write Cycle Time - Word, Page:: -

Access Time:: -

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

CY15E016Q-SXAT FAQ

1.How can I place an order for CY15E016Q-SXAT through Aetrix?

Please submit a Request for Quotation (RFQ) for CY15E016Q-SXAT 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 CY15E016Q-SXAT reliable?

The price and inventory of CY15E016Q-SXAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY15E016Q-SXAT is usually 5 days.

3.What payment methods are accepted for CY15E016Q-SXAT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY15E016Q-SXAT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY15E016Q-SXAT?

CY15E016Q-SXAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY15E016Q-SXAT 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 CY15E016Q-SXAT?

For technical support, including CY15E016Q-SXAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY15E016Q-SXAT requirements.

6.How does Aetrix verify that CY15E016Q-SXAT is sourced from the original manufacturer or authorized distributors?

All CY15E016Q-SXAT 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 CY15E016Q-SXAT meets industry standards.

7.What is the process for return or replacement of CY15E016Q-SXAT?

All CY15E016Q-SXAT units undergo pre-shipment inspection (PSI). If there is an issue with CY15E016Q-SXAT, 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 CY15E016Q-SXAT part is unused and in its original packaging.

Return procedure for CY15E016Q-SXAT:

1.Submit a request within 90 days.

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

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