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Infineon Technologies CY15E064J-SXAT
- Part No.:
- CY15E064J-SXAT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY15E064J-SXAT.pdf
- Description:
- IC FRAM 64KBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,097
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Product details
Overview
CY15E064J-SXAT from Cypress Semiconductor is a 64-Kbit (8K × 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, airbag controllers, and ADAS sensor nodes.
For engineers reviewing the CY15E064J-SXAT datasheet, CY15E064J-SXAT pinout, CY15E064J-SXAT application, or CY15E064J-SXAT equivalent, key selection criteria include write-speed-critical data capture, automotive AEC-Q100 alignment, I²C bus compatibility at 1 MHz, and hardware drop-in replacement capability for legacy serial EEPROMs without firmware changes.
Technical Context
The CY15E064J-SXAT implements a ferroelectric memory array organized as 8,192 × 8 bits, accessed via standard two-wire I²C protocol with slave address 0xA0–0xA7 (7-bit). It supports full-speed 1-MHz operation while maintaining backward timing compatibility with 100 kHz and 400 kHz legacy systems.
Its control logic eliminates write polling: each byte transfers directly into nonvolatile storage at bus speed, with no internal write cycle delay or elevated voltage generation. The device uses internal address latching and auto-incrementing for sequential access, and supports both random and current-address read modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 64 Kbit (8K × 8), enabling storage of 8,192 bytes of critical configuration or event logs |
| Interface | I²C (two-wire serial), allowing direct integration into microcontroller-based automotive subsystems without additional protocol translation |
| Max Clock Frequency | 1 MHz, supporting high-throughput logging at up to 100 kbyte/s effective write bandwidth |
| Endurance | 10¹⁴ read/write cycles - sufficient for continuous 100-Hz logging over 31 years without wear-out |
| Data Retention | 151 years at +85 °C, ensuring integrity across full vehicle lifecycle without refresh or backup power |
| Supply Voltage | 4.5 V to 5.5 V, matching standard 5-V automotive rail and eliminating need for level-shifting in legacy designs |
| Operating Temp | –40 °C to +85 °C (Automotive-A grade), qualified per AEC-Q100 for under-hood and cabin-mounted ECUs |
Pinout & Package
8-pin Small Outline Integrated Circuit (SOIC) package, surface-mount, RoHS-compliant, with 1.27 mm pitch and standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device Select Address Inputs | Enable up to 8 devices on same I²C bus; pulled down internally, defaulting to 0x50 slave address when all grounded |
| SDA | Serial Data I/O | Open-drain bidirectional line with Schmitt trigger input and slope-controlled output; requires external pull-up for I²C wire-AND topology |
| SCL | Serial Clock Input | Master-generated clock with Schmitt-triggered input; defines timing for all data transfers and address latching |
| WP | Write Protect Input | Hardware-level lock: tied to VDD disables all writes; tied to VSS enables full memory access; internal pull-down ensures safe default state |
| VDD | Power Supply | Primary 4.5–5.5 V supply; powers core logic and F-RAM array without internal charge pump |
| VSS | Ground Reference | System ground return path; must be low-impedance connection to minimize noise coupling during high-speed I²C transitions |
Key Features
| Feature | Design Value |
|---|---|
| NoDelay™ Write Architecture | Eliminates write polling and timeout handling in firmware-each byte commits instantly upon I²C ACK, reducing CPU overhead by >95% vs. EEPROM |
| Ferroelectric Memory Core | Enables true RAM-like write performance with nonvolatile retention-no wear leveling, ECC, or block management required in host software |
| 1-MHz I²C Compatibility | Supports real-time logging at 100 Hz with sub-millisecond latency per 16-byte record, meeting ASAM MCD-2 MC timing constraints |
| Automotive-A Qualification | Validated for continuous operation across full temperature range and vibration profiles per ISO 16750-4, suitable for ECU black-box recording |
| Hardware EEPROM Drop-in | Pin- and protocol-compatible with AT24C64 and CAT24C64-no PCB redesign or driver modification needed for migration |
Applications
| Engine Control Unit (ECU) Event Logging | Advanced Driver Assistance Systems (ADAS) Sensor Calibration Storage |
|---|---|
Use Scenario: Capturing misfire events, knock sensor anomalies, and fuel trim corrections during vehicle operation. IC Role / Device Role / Timing Role: Nonvolatile scratchpad memory storing timestamped diagnostic snapshots at ≥50 Hz without data loss during ignition cycling. Use Value: 10¹⁴ endurance ensures >30 years of daily 10,000-event logging; NoDelay™ prevents missed entries during rapid throttle transients. | Use Scenario: Storing camera/lidar calibration coefficients updated during factory setup and field recalibration. IC Role / Device Role / Timing Role: Secure, tamper-resistant configuration store accessed only during boot or service mode via I²C. Use Value: 151-year retention guarantees coefficient validity across vehicle lifetime; WP pin enables permanent lock after calibration to prevent corruption. |
| Occupant Restraint System (Airbag) Crash Data Buffer | Telematics Control Unit (TCU) Firmware Parameter Backup |
Use Scenario: Recording pre-crash vehicle dynamics (speed, yaw, brake status) in last 5 seconds before airbag deployment. IC Role / Device Role / Timing Role: High-reliability circular buffer written continuously at 100 Hz, overwritten only after confirmed crash event. Use Value: Sub-100 ns write latency captures final milliseconds before power loss; automotive-A temp rating ensures functionality during thermal shock of collision. | Use Scenario: Preserving OTA update rollback parameters, SIM credentials, and network configuration across reboots and firmware updates. IC Role / Device Role / Timing Role: Dual-role storage: volatile cache during active update, persistent keeper of recovery keys and version metadata. Use Value: 5.5 V tolerance withstands brown-out conditions during cellular modem power surges; I²C compatibility simplifies integration with Qualcomm/Infineon TCU SoCs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial nonvolatile memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C64D-SSHM-T (Microchip) | EEPROM with 1-MHz I²C support but 10⁶ write endurance and 5-ms write latency | Limited to infrequent configuration storage; unsuitable for high-frequency logging or crash buffers | Select only where cost sensitivity outweighs write-cycle requirements and firmware can accommodate polling |
| FM24V06-G (Cypress) | F-RAM with identical 64-Kbit size and I²C interface but 2.7–3.6 V operation and industrial temp range | Requires level-shifting in 5-V automotive systems; not AEC-Q100 qualified | Prefer for battery-powered telematics modules or infotainment subsystems with 3.3-V rails |
Compared with AT24C64D-SSHM-T and FM24V06-G, the CY15E064J-SXAT uniquely combines automotive-A qualification, 5-V operation, and 10¹⁴ endurance-making it the only drop-in solution for safety-critical, high-write-rate automotive memory applications without voltage translation or derating.
Availability
CY15E064J-SXAT is available at Aetrix Electronics and suitable for engine control units, airbag controllers, and ADAS sensor modules requiring stable component supply across extended automotive production lifecycles.
Supply support for CY15E064J-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) is a global leader in embedded solutions, specializing in high-reliability memory, PSoC programmable systems-on-chip, and automotive-qualified interfaces.
The CY15E series was designed specifically for automotive data-logging applications demanding zero-latency nonvolatile writes, long-term data integrity, and seamless integration into existing I²C-based ECU architectures.
FAQ
Is CY15E064J-SXAT pin-compatible with standard 8-pin SOIC EEPROMs like AT24C64?
Yes. CY15E064J-SXAT uses identical 8-pin SOIC packaging and matches the pinout of AT24C64, including A0–A2 address inputs, SDA, SCL, WP, VDD, and VSS. No PCB layout changes are required for migration, and the I²C slave address range (0xA0–0xA7) is fully compatible.
Does CY15E064J-SXAT require special I²C timing or firmware modifications?
No. It supports standard I²C timing-including legacy 100 kHz and 400 kHz modes-and operates identically to EEPROM at the protocol level. Firmware retains standard START/STOP, address/data transfer, and ACK/NACK sequences; only write-polling loops are removed due to NoDelay™ operation.
What is the significance of the "-SXAT" suffix in the part number?
The "-SXAT" suffix denotes the specific variant: "S" = SOIC package, "X" = 5-V operation (4.5–5.5 V), "A" = Automotive-A temperature grade (–40 °C to +85 °C), and "T" = tape-and-reel packaging. This distinguishes it from industrial-grade or 3.3-V variants in the CY15E064J family.
Can the WP pin be left unconnected, or does it require a defined logic level?
WP has an internal pull-down resistor and defaults to write-enable when floating. However, for functional safety compliance (e.g., ISO 26262 ASIL-B), it must be explicitly tied to VDD or VSS-never left floating-to prevent unintended writes during EMI events or power sequencing glitches.
CY15E064J-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:
- 64Kbit
- Memory Organization:
- 8K 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
CY15E064J-SXAT FAQ
1.How can I place an order for CY15E064J-SXAT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY15E064J-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 CY15E064J-SXAT reliable?
The price and inventory of CY15E064J-SXAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY15E064J-SXAT is usually 5 days.
3.What payment methods are accepted for CY15E064J-SXAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY15E064J-SXAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY15E064J-SXAT?
CY15E064J-SXAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY15E064J-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 CY15E064J-SXAT?
For technical support, including CY15E064J-SXAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY15E064J-SXAT requirements.
6.How does Aetrix verify that CY15E064J-SXAT is sourced from the original manufacturer or authorized distributors?
All CY15E064J-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 CY15E064J-SXAT meets industry standards.
7.What is the process for return or replacement of CY15E064J-SXAT?
All CY15E064J-SXAT units undergo pre-shipment inspection (PSI). If there is an issue with CY15E064J-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 CY15E064J-SXAT part is unused and in its original packaging.
Return procedure for CY15E064J-SXAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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