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Infineon Technologies CY15B004Q-SXAT
- Part No.:
- CY15B004Q-SXAT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY15B004Q-SXAT.pdf
- Description:
- IC FRAM 4KBIT SPI 16MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,398
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Product details
Overview
CY15B004Q-SXAT from Cypress Semiconductor is a 4-Kbit (512 × 8) serial SPI F-RAM nonvolatile memory IC designed for automotive-A applications. It delivers NoDelay™ writes, 1014 read/write endurance, 151-year data retention, and operates at up to 20 MHz over –40 °C to +85 °C. It serves as a hardware drop-in replacement for serial EEPROM/flash in real-time data logging systems.
For engineers reviewing the CY15B004Q-SXAT datasheet, CY15B004Q-SXAT pinout, CY15B004Q-SXAT application, or CY15B004Q-SXAT equivalent, key selection criteria include write-speed-critical nonvolatile storage, automotive temperature compliance, SPI mode 0/3 interoperability, and absence of write polling overhead in embedded control firmware.
Technical Context
The CY15B004Q-SXAT implements a ferroelectric memory array with zero-latency write execution-data commits immediately after each byte transfer without internal write cycles or status polling. Its SPI interface supports dual modes (0 and 3), with inputs latched on SCK rising edge and outputs driven on falling edge.
Write protection is implemented via three independent mechanisms: hardware WP pin assertion, software WREN/WRDI instructions, and configurable block protection (1/4, 1/2, or full array) controlled through the 8-bit nonvolatile Status Register. The device lacks internal power management beyond POR, requiring strict VDD regulation between 2.7 V and 3.6 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 4 Kbit (512 × 8 bytes); enables compact firmware parameter storage without page management overhead |
| Interface | SPI slave, modes 0 and 3; compatible with standard MCU hardware SPI peripherals without protocol translation |
| Max clock frequency | 20 MHz; supports sub-μs per-byte write latency at bus speed, eliminating timing-critical polling loops |
| Data retention | 151 years at +85 °C; guarantees long-term integrity in unpowered automotive ECUs without refresh circuitry |
| Endurance | 1014 read/write cycles; sustains >27,000 writes/sec continuously for 10+ years in high-frequency sensor logging |
| Operating voltage | 2.7 V to 3.6 V; matches automotive 3.3 V rail with ±10% tolerance, no level-shifting required |
| Temperature range | –40 °C to +85 °C (Automotive-A grade); qualified for under-hood and cabin control module deployment |
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 input | Active-low enable; must fall before each opcode; places device in standby (3 µA) when high |
| SCK | Serial clock input | Synchronizes all I/O; rising edge latches SI, falling edge drives SO; supports 0–20 MHz, interruptible |
| SI | Serial input | Receives opcodes, addresses, and write data; sampled only on SCK rising edge |
| SO | Serial output | Drives read data and status bits; tristated during HOLD or when CS is high |
| WP | Write protect input | Hardware lock: pulls low to disable all writes including Status Register; tie to VDD if unused |
| HOLD | Operation suspend input | Pauses ongoing read/write when pulled low while SCK is low; resumes on next CS active cycle |
| VSS | Ground | Reference return path for all signals and power; must connect to system ground plane |
| VDD | Power supply | 2.7–3.6 V supply; powers logic and F-RAM array; requires local 100 nF decoupling |
Key Features
| Feature | Design Value |
|---|---|
| NoDelay™ write architecture | Eliminates write polling and timeout handling in firmware-byte commits instantly upon SI reception |
| 1014 endurance | Enables continuous logging at 1 kHz for >3 years without wear leveling or block rotation |
| 151-year data retention | Validated at +85 °C; ensures ECU calibration data survives vehicle lifetime without backup power |
| Hardware + software write protection | WP pin blocks all writes unconditionally; Status Register enables selective block locking for firmware partitioning |
| SPI mode 0/3 compatibility | Interoperates with legacy and modern MCUs (e.g., STM32, NXP S32K, Renesas RH850) without driver modification |
Applications
| Telematics Event Logging | Engine Control Unit (ECU) Calibration Storage |
|---|---|
Use Scenario: Capturing GPS position, speed, and fault codes during vehicle motion with millisecond timestamp resolution. IC Role / Device Role / Timing Role: Nonvolatile scratchpad memory holding transient event buffers before CAN transmission or flash consolidation. Use Value: 20 MHz SPI enables 500 ns/byte writes-no lost events during burst logging; 1014 cycles prevent field failure from frequent overwrite. | Use Scenario: Storing adaptive fuel trim, idle learning, and misfire counters that update every engine cycle. IC Role / Device Role / Timing Role: Real-time parameter store synchronized to crankshaft position signal interrupts. Use Value: Zero-write-latency eliminates CPU stall time; 151-year retention preserves learned values across vehicle ownership changes. |
| ADAS Camera Frame Metadata Buffer | Body Control Module (BCM) Configuration Memory |
Use Scenario: Recording exposure settings, lens focus state, and thermal drift compensation per captured frame in surround-view systems. IC Role / Device Role / Timing Role: High-speed metadata shadow RAM interfaced directly to image signal processor SPI port. Use Value: 20 MHz operation matches frame-rate timing budgets; automotive-A temp rating ensures reliability near camera housing heat sources. | Use Scenario: Holding door lock logic states, lighting profiles, and seat position presets across ignition cycles. IC Role / Device Role / Timing Role: Persistent configuration register bank accessed during BCM boot and user input events. Use Value: Hardware WP pin prevents accidental corruption during CAN firmware updates; SOIC package fits space-constrained PCB layouts. |
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-SSHN-B | 4-Mbit SPI flash; requires 25 ms page program time; 100k write cycles; no built-in write protection bits | Requires firmware polling and wear leveling; unsuitable for sub-millisecond write bursts | Select only if cost-sensitive and write frequency < 100x/day |
| BR24G04FJ-WE2 | 4-Kbit I²C EEPROM; 1 MHz max clock; 1M write cycles; 40-year retention at +85 °C | Slower interface limits logging rate; I²C bus contention risk in multi-node systems | Prefer for low-pin-count designs where SPI is unavailable and write rate ≤ 10 Hz |
Compared with AT25DF041A-SSHN-B and BR24G04FJ-WE2, CY15B004Q-SXAT uniquely delivers bus-speed writes, 100,000× higher endurance, and automotive-grade retention-making it the only viable choice for deterministic real-time data capture in safety-critical ECUs.
Availability
CY15B004Q-SXAT is available at Aetrix Electronics and suitable for automotive telematics, engine control units, and ADAS camera modules requiring stable component supply across extended production lifecycles.
Supply support for CY15B004Q-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 semiconductor solutions for automotive, industrial, and IoT applications, with emphasis on embedded memory and microcontroller integration.
CY15B004Q belongs to the Automotive-A F-RAM product line, engineered specifically to replace EEPROM/flash in write-intensive automotive subsystems where latency, endurance, and temperature resilience are non-negotiable.
FAQ
Does CY15B004Q-SXAT require external write polling or delay timers in firmware?
No. The device executes writes at SPI bus speed with NoDelay™ architecture-each byte commits immediately upon successful SI transfer. The next SPI transaction may begin without checking status or inserting delays, simplifying real-time firmware design and reducing CPU load.
Can CY15B004Q-SXAT be used as a direct hardware replacement for a 4-Kbit SPI EEPROM?
Yes. It uses identical 8-pin SOIC packaging, pin-compatible SPI interface (CS, SCK, SI, SO, WP, HOLD, VDD, VSS), and standard opcodes. No PCB redesign or schematic change is needed-only firmware driver updates to remove polling loops and leverage faster throughput.
What is the impact of the documented errata regarding WEL bit behavior at addresses 0x100–0x1FF?
The Write Enable Latch (WEL) bit remains set after writes to memory locations 0x100–0x1FF and does not auto-clear. Firmware must explicitly issue WRDI before subsequent write operations to those addresses to avoid unintended write protection activation.
Is the HOLD pin mandatory for functional operation?
No. HOLD is optional and intended for host CPU task interruption. If unused, it must be tied to VDD per datasheet requirements. Omitting HOLD connection does not affect basic read/write functionality, SPI timing, or data integrity.
CY15B004Q-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:
- 4Kbit
- Memory Organization:
- 512 x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 16 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
CY15B004Q-SXAT FAQ
1.How can I place an order for CY15B004Q-SXAT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY15B004Q-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 CY15B004Q-SXAT reliable?
The price and inventory of CY15B004Q-SXAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY15B004Q-SXAT is usually 5 days.
3.What payment methods are accepted for CY15B004Q-SXAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY15B004Q-SXAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY15B004Q-SXAT?
CY15B004Q-SXAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY15B004Q-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 CY15B004Q-SXAT?
For technical support, including CY15B004Q-SXAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY15B004Q-SXAT requirements.
6.How does Aetrix verify that CY15B004Q-SXAT is sourced from the original manufacturer or authorized distributors?
All CY15B004Q-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 CY15B004Q-SXAT meets industry standards.
7.What is the process for return or replacement of CY15B004Q-SXAT?
All CY15B004Q-SXAT units undergo pre-shipment inspection (PSI). If there is an issue with CY15B004Q-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 CY15B004Q-SXAT part is unused and in its original packaging.
Return procedure for CY15B004Q-SXAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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