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Infineon Technologies CY15E004J-SXA
- Part No.:
- CY15E004J-SXA
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY15E004J-SXA.pdf
- Description:
- IC FRAM 4KBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,538
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Product details
Overview
CY15E004J-SXA from Cypress Semiconductor is a 4-Kbit (512 × 8) automotive-grade serial F-RAM with I²C interface, operating from 4.5 V to 5.5 V over –40 °C to +85 °C. It delivers NoDelay™ writes, 10¹⁴ read/write endurance, and 151-year data retention-enabling reliable nonvolatile logging in engine control units, battery management systems, and ADAS event recorders.
For engineers reviewing the CY15E004J-SXA datasheet, CY15E004J-SXA pinout, CY15E004J-SXA application, or CY15E004J-SXA equivalent, key selection criteria include I²C bus speed compatibility (up to 1 MHz), write-protection via WP pin, SOIC-8 package footprint, and drop-in replacement capability for legacy serial EEPROM in automotive-A environments.
Technical Context
The CY15E004J-SXA implements a ferroelectric memory array organized as 512 × 8 bits, accessed via standard two-wire I²C protocol with slave address 1010b plus 2-bit device select (A2/A1) and 1-bit page select. It requires no internal charge pump or write-cycle delay, enabling immediate byte-level writes at bus speed without polling.
Its architecture eliminates EEPROM-style write latency and endurance bottlenecks: each write completes within one I²C transaction frame, and the device supports continuous sequential reads/writes across page boundaries with automatic address rollover from 1FFh to 000h.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 4 Kbit (512 × 8), directly addressable via 9-bit logic address (8-bit word + 1-bit page) |
| I²C clock frequency | Up to 1 MHz - enables 10× faster write throughput vs. 100 kHz EEPROM in same timing constraints |
| Write endurance | 100 trillion (10¹⁴) cycles - supports >100 years of daily 1000-write logging at full memory depth |
| Data retention | 151 years at +85 °C - guaranteed nonvolatile storage without refresh or backup power |
| Supply voltage | 4.5 V to 5.5 V - compatible with automotive 5 V rail and tolerant of transient dips during cold-crank |
| Operating temperature | –40 °C to +85 °C (Automotive-A grade) - qualified per AEC-Q100 Class 2 for under-hood deployment |
| Active current | 100 µA at 100 kHz - minimizes microcontroller subsystem power budget impact during frequent logging |
Pinout & Package
Package: 8-pin Small Outline Integrated Circuit (SOIC), 150 mil width, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1, A2 | Device select input | Hardwired address bits selecting one of up to four identical devices on shared I²C bus; pulled down internally |
| SDA | I²C bidirectional data line | Open-drain, Schmitt-triggered, requires external pull-up; supports multi-master arbitration and noise immunity |
| SCL | I²C clock input | Master-generated clock; rising edge samples input, falling edge outputs data; Schmitt-triggered for robust timing |
| WP | Hardware write protect | Logic HIGH disables all writes; LOW enables full memory access; internal pull-down ensures default write-enable on power-up |
| VDD | Power supply | 4.5–5.5 V nominal; powers core logic and F-RAM array; no internal voltage regulation required |
| VSS | Ground reference | System ground return path; must be low-impedance connection to avoid I²C signal integrity degradation |
| NC | No connect | Internally unconnected die pad; left floating or tied to VSS per board layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| NoDelay™ write architecture | Eliminates write-cycle wait states - data commits immediately after ACK, enabling deterministic real-time logging |
| Ferroelectric memory process | Enables 10¹⁴ endurance without wear leveling or block erase - ideal for cyclic parameter storage in ECUs |
| I²C timing compatibility | Supports 100 kHz, 400 kHz, and 1 MHz modes - interoperable with legacy microcontrollers and new high-speed SoCs |
| Hardware write protection | WP pin provides fail-safe memory lock during firmware updates or power transitions - prevents accidental corruption |
| Automotive-A qualification | Validated for –40 °C to +85 °C operation with AEC-Q100 stress testing - suitable for engine bay and transmission control modules |
Applications
| Engine Control Unit (ECU) Data Logging | Battery Management System (BMS) State Tracking |
|---|---|
Use Scenario: Storing fault codes, sensor calibration offsets, and runtime counters during vehicle operation and ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile scratchpad memory interfacing directly with ECU MCU via I²C; retains data across cold starts and brownouts. Use Value: 10¹⁴ endurance ensures >20 years of daily 500-write logging without degradation; NoDelay™ prevents loss of last-event data during sudden power loss. | Use Scenario: Recording cell voltage history, charge/discharge cycle counts, and thermal event timestamps in 12 V and 48 V hybrid architectures. IC Role / Device Role / Timing Role: High-reliability serial NV memory co-located with BMS analog front-end; operates continuously at ambient temperatures up to +85 °C. Use Value: 151-year retention guarantees data integrity over full vehicle lifetime without periodic refresh; 4.5–5.5 V range matches BMS supply rails. |
| Advanced Driver Assistance Systems (ADAS) Event Buffer | Telematics Control Unit (TCU) Configuration Storage |
Use Scenario: Capturing pre-crash sensor snapshots (radar, camera trigger flags, IMU data) for post-incident analysis. IC Role / Device Role / Timing Role: Low-latency write buffer synchronized to ADAS SoC interrupt signals; accessed via I²C at 1 MHz for burst capture. Use Value: Zero write delay enables sub-millisecond timestamping fidelity; SOIC-8 footprint allows placement near sensor fusion processors. | Use Scenario: Storing SIM authentication keys, network APN settings, OTA update metadata, and GPS almanac data across power cycles. IC Role / Device Role / Timing Role: Secure configuration store accessed during TCU boot and modem initialization; WP pin locked during firmware execution. Use Value: Hardware write protection prevents remote overwrite attacks; automotive temperature rating ensures reliability in dashboard-mounted units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial nonvolatile memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C04C-SSHM-T (Microchip) | 4-Kbit I²C EEPROM; 1 million write cycles; 100-year retention at +25 °C; 10 ms write time per byte | Lacks automotive-A temp grade; requires polling; unsuitable for high-frequency logging | Select only if cost sensitivity outweighs endurance and latency requirements |
| FM24V04-G (Cypress/Infineon) | 4-Kbit I²C F-RAM; 10¹⁴ cycles; 151-year retention; but rated –40 °C to +105 °C (Automotive-B) | Higher temp grade increases cost; pinout and timing identical - direct upgrade path | Choose for extended-temperature designs requiring >+85 °C operation |
Compared with AT24C04C-SSHM-T, CY15E004J-SXA eliminates write latency and extends endurance by 100 million×; versus FM24V04-G, it trades +105 °C capability for optimized cost and qualification specifically for Automotive-A use cases.
Availability
CY15E004J-SXA is available at Aetrix Electronics and suitable for engine control units, battery management systems, and ADAS event recorders requiring stable component supply under automotive production schedules.
Supply support for CY15E004J-SXA 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 focus on memory, PSoC, and connectivity products.
The CY15E series targets automotive nonvolatile memory needs where EEPROM limitations in endurance, speed, and power are critical - delivering F-RAM advantages in compact SOIC packaging with AEC-Q100 compliance.
FAQ
Is CY15E004J-SXA pin-compatible with standard I²C EEPROMs in SOIC-8 packages?
Yes - CY15E004J-SXA uses identical SOIC-8 pinout (A1, A2, SDA, SCL, WP, VDD, VSS, NC) and matches I²C electrical signaling levels, allowing direct PCB replacement of 4-Kbit serial EEPROMs without layout changes. Addressing and command structure follow standard I²C memory protocol conventions.
Does CY15E004J-SXA require external circuitry for I²C pull-up resistors?
Yes - SDA and SCL pins are open-drain and require external pull-up resistors to VDD. Recommended values are 2.2 kΩ for 100 kHz, 1 kΩ for 400 kHz, and 4.7 kΩ for 1 MHz operation, sized per bus capacitance and rise-time requirements defined in the I²C specification.
How does the WP pin function during power-up and brownout conditions?
The WP pin has an internal pull-down resistor, ensuring write-enable state at power-on reset. During brownout (VDD < 4.5 V), internal logic resets and WP reverts to default LOW, preventing partial writes. For fail-safe operation, tie WP to VDD through a dedicated supervisor IC output that asserts HIGH only when VDD is stable and within spec.
Can CY15E004J-SXA be used in systems requiring data security or encryption?
No - CY15E004J-SXA provides no hardware encryption, secure boot, or tamper detection. It functions as a raw nonvolatile memory buffer. For secure storage, pair it with a trusted platform module (TPM) or secure microcontroller that handles encryption before writing to the F-RAM, using WP pin control to isolate protected regions.
CY15E004J-SXA 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:
- 4Kbit
- Memory Organization:
- 512 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 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
CY15E004J-SXA FAQ
1.How can I place an order for CY15E004J-SXA through Aetrix?
Please submit a Request for Quotation (RFQ) for CY15E004J-SXA 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 CY15E004J-SXA reliable?
The price and inventory of CY15E004J-SXA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY15E004J-SXA is usually 5 days.
3.What payment methods are accepted for CY15E004J-SXA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY15E004J-SXA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY15E004J-SXA?
CY15E004J-SXA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY15E004J-SXA 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 CY15E004J-SXA?
For technical support, including CY15E004J-SXA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY15E004J-SXA requirements.
6.How does Aetrix verify that CY15E004J-SXA is sourced from the original manufacturer or authorized distributors?
All CY15E004J-SXA 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 CY15E004J-SXA meets industry standards.
7.What is the process for return or replacement of CY15E004J-SXA?
All CY15E004J-SXA units undergo pre-shipment inspection (PSI). If there is an issue with CY15E004J-SXA, 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 CY15E004J-SXA part is unused and in its original packaging.
Return procedure for CY15E004J-SXA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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