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Infineon Technologies CY15B004J-SXET
- Part No.:
- CY15B004J-SXET
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY15B004J-SXET.pdf
- Description:
- IC FRAM 4KBIT I2C 3.4MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,843
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Product details
Overview
CY15B004J-SXET from Infineon Technologies (formerly Cypress) is a 4-Kbit (512 × 8) serial I²C ferroelectric RAM (F-RAM) designed for automotive nonvolatile data logging. It delivers NoDelay™ writes, 10¹³ read/write endurance, 121-year data retention at +125 °C, and operates across –40 °C to +125 °C in an AEC-Q100 Grade 1 qualified 8-pin SOIC package.
For engineers reviewing the CY15B004J-SXET datasheet, CY15B004J-SXET pinout, CY15B004J-SXET application, or CY15B004J-SXET equivalent, key selection criteria include write-speed-critical data capture, high-cycle-count logging in harsh environments, I²C bus timing compatibility with legacy EEPROM systems, and automotive-grade reliability without write polling overhead.
Technical Context
The CY15B004J-SXET implements a true nonvolatile memory core using lead zirconate titanate (PZT) ferroelectric capacitors, enabling RAM-like random access with EEPROM-level persistence. Its I²C interface supports 100 kHz, 400 kHz, and 1 MHz modes while maintaining full backward compatibility with standard I²C EEPROM timing and addressing protocols.
It uses a 9-bit internal address space (1-bit page + 8-bit word), supports hardware write protection via the WP pin, and requires no internal charge pump-eliminating write latency and reducing active current to 120 µA at 100 kHz. The device lacks on-chip power management beyond POR, placing VDD stability responsibility entirely on the host system.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4 Kbit (512 × 8) - provides byte-addressable nonvolatile storage for firmware state, calibration tables, or sensor history without block erase constraints. |
| Interface | I²C (2-wire serial) - enables direct drop-in replacement of serial EEPROM in existing microcontroller designs with no protocol stack changes. |
| Write Endurance | 10¹³ cycles - supports continuous logging at 100 Hz for >3,000 years without wear-out, eliminating EEPROM lifetime concerns in telematics or ADAS event buffers. |
| Data Retention | 121 years at +125 °C - guarantees integrity over full automotive lifecycle under worst-case under-hood thermal stress without refresh. |
| Operating Voltage | 3.0 V to 3.6 V - matches standard automotive 3.3 V rail, avoiding level-shifting in body control modules or gateway ECUs. |
| Temperature Range | –40 °C to +125 °C - certified per AEC-Q100 Grade 1, validated for engine bay, transmission, and battery management applications. |
| Max Clock Frequency | 1 MHz - enables sub-10 µs byte writes at bus speed, removing software wait states and simplifying real-time interrupt service routines. |
Pinout & Package
Package: 8-pin Small Outline Integrated Circuit (SOIC), 150 mil width, RoHS-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1, A2 | Device Address Input | Select one of up to four identical devices on same I²C bus; pulled down internally, enabling default slave address 0xA0 when both grounded. |
| SDA | Bi-directional Serial Data | Open-drain I²C data line with Schmitt-trigger input and slope-controlled output; requires external pull-up resistor. |
| SCL | Serial Clock Input | Master-generated clock with Schmitt-trigger input; defines timing for all read/write transfers and ACK/NACK handshaking. |
| WP | Hardware Write Protect | Active-high signal; ties entire memory map read-only when driven to VDD, preventing accidental overwrites during power transients. |
| VSS | Ground Reference | Primary return path for all internal logic and I/O; must be low-impedance connection to system ground plane. |
| VDD | Power Supply | 3.0–3.6 V supply input; powers core F-RAM array and interface logic; no internal regulation or brown-out detection. |
| NC | No Connect | Internally unconnected die pad; electrically isolated and may be left floating or tied to ground per PCB layout best practice. |
Key Features
| Feature | Design Value |
|---|---|
| NoDelay™ Write Architecture | Writes complete within one I²C clock cycle-no polling, no timeout loops, and no risk of data loss during power-down sequences. |
| Ferroelectric Memory Core | Eliminates charge-pump circuitry, reducing active write current by >90% vs. EEPROM and enabling operation at minimum VDD without voltage margin degradation. |
| Legacy I²C Timing Compliance | Supports 100 kHz / 400 kHz / 1 MHz modes with identical START/STOP/data hold timing as standard EEPROM, ensuring plug-and-play integration. |
| Hardware Write Protection | WP pin provides fail-safe, pin-level lockout of all memory locations-critical for preserving calibration data or firmware configuration across ECU resets. |
| AEC-Q100 Grade 1 Qualification | Validated for continuous operation at +125 °C ambient with full parametric guarantee, meeting automotive functional safety requirements for ASIL-B systems. |
Applications
| Telematics Event Logging | ADAS Sensor Calibration Storage |
|---|---|
Use Scenario: Capturing GPS timestamps, crash-triggered CAN messages, and vehicle dynamics data during high-frequency events. IC Role / Device Role / Timing Role: Nonvolatile buffer that accepts writes at 1 kHz burst rates without latency or wear degradation. Use Value: Guarantees zero-data-loss logging even during abrupt ignition-off transitions, leveraging NoDelay™ writes and 10¹³ endurance. | Use Scenario: Storing camera/lidar alignment offsets, temperature-compensated gain coefficients, and lens distortion maps updated during factory calibration or field learning. IC Role / Device Role / Timing Role: Secure, tamper-resistant configuration store accessed only during boot or maintenance mode. Use Value: WP pin prevents runtime corruption; 121-year retention ensures calibration validity across 15+ year vehicle lifetimes. |
| Engine Control Unit (ECU) Runtime State Backup | Electric Powertrain Battery Management System (BMS) |
Use Scenario: Saving fuel injection timing corrections, knock sensor adaptation values, and idle air control adjustments between engine cycles. IC Role / Device Role / Timing Role: Low-latency shadow memory synchronized with main RAM on every critical update. Use Value: Eliminates EEPROM write delays that would otherwise stall real-time control loops during transient load conditions. | Use Scenario: Recording cell voltage imbalances, cycle count, and thermal history for each battery module in 400 V traction packs. IC Role / Device Role / Timing Role: High-reliability data logger operating continuously at +85 °C ambient inside battery enclosures. Use Value: AEC-Q100 Grade 1 qualification and 125 °C operation ensure integrity in thermally constrained BMS housings without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial nonvolatile memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C04D-SSHM-T | 4-Kbit I²C EEPROM; 1 million write cycles; 40 µs typical write time; no built-in WP pin (requires external logic). | Limited to infrequent updates (e.g., user settings); unsuitable for >100 Hz logging due to write latency and endurance limits. | Choose only if cost sensitivity outweighs write performance and longevity requirements. |
| FM24V04-G | 4-Kbit I²C F-RAM; 10¹⁴ endurance; 2.7–3.6 V range; same 8-pin SOIC; no AEC-Q100 qualification. | Not automotive-qualified; lacks guaranteed operation above +105 °C; suitable for industrial but not under-hood use. | Consider for non-automotive embedded systems where extended voltage range or higher endurance is prioritized over qualification. |
Compared with AT24C04D-SSHM-T and FM24V04-G, the CY15B004J-SXET uniquely combines automotive qualification, 10¹³ endurance, and true zero-latency writes-making it the only option for safety-critical, high-frequency, under-hood data logging where reliability and timing determinism are non-negotiable.
Availability
CY15B004J-SXET is available at Aetrix Electronics and suitable for automotive telematics, ADAS calibration storage, and engine control unit (ECU) state backup requiring stable component supply, long-term lifecycle support, and AEC-Q100 compliance.
Supply support for CY15B004J-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 global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive ICs, and security solutions with deep expertise in automotive qualification and reliability engineering.
The CY15B004J-SXET belongs to Infineon's F-RAM product line, engineered specifically for automotive and industrial applications demanding deterministic nonvolatile storage without write endurance or latency limitations.
FAQ
Is CY15B004J-SXET pin-compatible with standard I²C EEPROMs like the 24C04?
Yes-CY15B004J-SXET uses the same 8-pin SOIC footprint and identical I²C pin assignments (SDA, SCL, VDD, VSS, WP, A1, A2, NC) as industry-standard 4-Kbit I²C EEPROMs. No PCB redesign is needed; only firmware timing assumptions about write latency require verification.
Does CY15B004J-SXET require external pull-up resistors on SDA and SCL lines?
Yes-both SDA and SCL are open-drain I/Os with internal Schmitt triggers but no pull-up capability. External 2.2 kΩ to 4.7 kΩ resistors to VDD are required per I²C specification, with value selected based on bus capacitance and target clock frequency (1 MHz operation demands lower resistance).
Can CY15B004J-SXET operate reliably at 3.0 V during cold cranking conditions?
Yes-the device is fully specified from 3.0 V to 3.6 V across –40 °C to +125 °C. At 3.0 V and –40 °C, AC timing parameters including tBUF, tHD;STA, and tLOW remain within datasheet limits, supporting robust I²C communication during automotive cold-start scenarios.
What happens if the WP pin is left unconnected?
WP is internally pulled down, so an unconnected WP defaults to logic LOW-enabling full write access to all memory locations. For production systems, WP should be actively driven to VDD or GND depending on whether permanent or conditional write protection is required; floating is acceptable only in development.
CY15B004J-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:
- 4Kbit
- Memory Organization:
- 512 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 3.4 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- -
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
CY15B004J-SXET FAQ
1.How can I place an order for CY15B004J-SXET through Aetrix?
Please submit a Request for Quotation (RFQ) for CY15B004J-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 CY15B004J-SXET reliable?
The price and inventory of CY15B004J-SXET are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY15B004J-SXET is usually 5 days.
3.What payment methods are accepted for CY15B004J-SXET?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY15B004J-SXET transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY15B004J-SXET?
CY15B004J-SXET orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY15B004J-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 CY15B004J-SXET?
For technical support, including CY15B004J-SXET datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY15B004J-SXET requirements.
6.How does Aetrix verify that CY15B004J-SXET is sourced from the original manufacturer or authorized distributors?
All CY15B004J-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 CY15B004J-SXET meets industry standards.
7.What is the process for return or replacement of CY15B004J-SXET?
All CY15B004J-SXET units undergo pre-shipment inspection (PSI). If there is an issue with CY15B004J-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 CY15B004J-SXET part is unused and in its original packaging.
Return procedure for CY15B004J-SXET:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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