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Infineon Technologies CY15B104QN-50SXA
- Part No.:
- CY15B104QN-50SXA
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
CY15B104QN-50SXA.pdf
- Description:
- IC FRAM 4MBIT SPI 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:584
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Product details
Overview
CY15B104QN-50SXA from Infineon is a 4-Mb serial ferroelectric RAM (F-RAM) organized as 512K × 8, operating over SPI at up to 50 MHz with 1.8 V–3.6 V supply, 10¹⁵ write endurance, and 151-year data retention. It serves as nonvolatile memory in industrial data loggers where rapid, frequent writes and zero write latency are critical.
For engineers reviewing the CY15B104QN-50SXA datasheet, CY15B104QN-50SXA pinout, CY15B104QN-50SXA application, or CY15B104QN-50SXA equivalent, key selection criteria include SPI mode 0/3 compatibility, hardware/software write protection, deep power-down current (0.70 µA), and SOIC-8 packaging for industrial temperature (–40°C to +85°C) operation.
Technical Context
The CY15B104QN-50SXA implements an SPI slave interface with zero-latency write architecture: data commits immediately upon byte transfer without polling, enabling deterministic timing in real-time systems. Its ferroelectric memory array eliminates erase cycles and wear leveling overhead inherent in flash/EEPROM.
It integrates dedicated 256-byte special sector F-RAM tolerant to three reflow cycles, plus Device ID (manufacturer + product ID), Unique ID, and user-writable 8-byte serial number registers - all accessible via standardized SPI opcodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory density | 4 Mb (512K × 8 bits); supports full byte-addressable SPI read/write without page boundaries or erase blocks. |
| Max SPI clock | 50 MHz; enables sub-μs per-byte write commit time, eliminating bus idle waiting for write completion. |
| Data retention | 151 years at +85°C; guarantees nonvolatile storage integrity across full industrial lifetime without refresh. |
| Write endurance | 10¹⁵ cycles; supports continuous logging at 1 kHz write rate for >31,700 years without wear-out failure. |
| Supply voltage | 1.8 V to 3.6 V; interoperable with 1.8 V, 2.5 V, and 3.3 V logic domains without level shifters. |
| Deep power-down current | 0.70 µA (typ); reduces system standby power in battery-backed data acquisition nodes. |
| Operating temperature | –40°C to +85°C; qualified for industrial control cabinets, motor drives, and outdoor metering environments. |
Pinout & Package
Package: 8-pin SOIC (Small Outline Integrated Circuit), surface-mount, RoHS-compliant, industrial-grade thermal profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select input | Active-low enable: falling edge initiates SPI transaction; HIGH places device in tristated standby (2.3 µA). |
| SCK | Serial clock input | Synchronizes all I/O; rising edge samples SI, falling edge drives SO; supports 0–50 MHz with interruptible clock. |
| SI | Serial input | Accepts opcodes, addresses, and write data; must be driven to valid logic level to meet IDD specs. |
| SO | Serial output | Drives read data on falling SCK edge; tristated when not reading or during CS HIGH. |
| WP | Write protect input | Hardware lock for status register when WPEN = 1; must tie to VDD if unused to prevent accidental protection. |
| VSS | Ground | System reference return path; requires low-impedance connection to minimize noise coupling into F-RAM array. |
| VDD | Power supply | 1.8–3.6 V input; decoupling capacitor (0.1 µF) required near pin for stable SPI timing and write reliability. |
| DNU | Do-not-use terminal | No internal connection; must float or tie to VDD - no signal routing or PCB trace allowed. |
Key Features
| Feature | Design Value |
|---|---|
| Instant non-volatile write | Zero write latency: data stored immediately after SPI byte transfer - no polling, no timeout handling in firmware. |
| Dedicated 256-byte special sector | Survives ≥3 reflow cycles; ideal for storing calibration coefficients or board-specific identifiers in manufacturing flow. |
| Multi-layer write protection | Combines hardware (WP pin), software disable (WRDI), and block-level (1/4, 1/2, full array) locking - prevents accidental overwrites in field-deployed units. |
| Device & serial identification | Read-only Device ID (Infineon + product code) + Unique ID + writable 8-byte serial number - enables secure asset tracking and firmware binding. |
| Low-power operational modes | Deep power-down (0.70 µA) and hibernate (0.1 µA) modes support energy harvesting and battery-operated sensor nodes. |
Applications
| Industrial Data Logger | Smart Energy Meter |
|---|---|
Use Scenario: Continuous timestamped sensor sampling (voltage, current, temperature) at 100 Hz with power-loss resilience. IC Role / Device Role / Timing Role: Nonvolatile buffer storing raw measurements between MCU processing cycles; operates as SPI slave with deterministic sub-μs write commit. Use Value: Eliminates risk of data loss during brownouts - every sampled byte is instantly persistent, unlike flash requiring 10–100 ms erase/write windows. | Use Scenario: Storing tariff schedules, billing counters, and tamper-event logs in DIN-rail mounted electricity meters. IC Role / Device Role / Timing Role: Secure, high-endurance nonvolatile memory for regulatory-critical parameters; accessed via isolated SPI interface from metrology SoC. Use Value: Guarantees 10¹⁵ write cycles - supports daily 1000-event logging for >2700 years without wear degradation or data corruption. |
| PLC I/O Module | Medical Diagnostic Sensor Hub |
Use Scenario: Capturing transient fault waveforms (e.g., motor phase imbalance) in programmable logic controller backplanes. IC Role / Device Role / Timing Role: Real-time waveform capture buffer interfaced to FPGA or ARM Cortex-M7; uses SPI mode 3 for noise-immune communication in EMI-heavy factory floors. Use Value: Enables gap-free 1 MS/s sampling bursts directly to nonvolatile memory - no DRAM backup or external flash buffering required. | Use Scenario: Storing calibrated transducer coefficients and patient-specific configuration profiles in portable ultrasound or ECG devices. IC Role / Device Role / Timing Role: Trusted parameter store with Device ID and Unique ID for FDA-regulated traceability; special sector holds reflow-surviving calibration data. Use Value: Meets IEC 62304 Class C software requirements by ensuring immutable, verifiable device identity and calibration history across production batches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nonvolatile serial memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY15B104QSN-50SXA | Same die, identical electrical specs, but in 8-pin UFLGA package (0.5 mm pitch, 3.0 × 2.0 mm footprint). | Required for space-constrained portable medical or wearable designs where SOIC footprint is prohibitive. | Select when board area < 25 mm² is mandatory and reflow profile supports ultra-fine-pitch assembly. |
| AT45DB041E-SSHN-B | 4-Mb DataFlash with 64-byte page write; 100k endurance; 20 ms typical page write time; no instant-write capability. | Suitable only for infrequent configuration storage - not viable for high-frequency data logging or real-time buffering. | Choose only if cost sensitivity outweighs write performance, and application tolerates 100× slower writes and finite endurance. |
Compared with AT45DB041E-SSHN-B, CY15B104QN-50SXA delivers 10¹⁰× higher endurance and eliminates write latency, while CY15B104QSN-50SXA offers identical functionality in a miniaturized package - both alternatives trade off either size or legacy compatibility, not core F-RAM advantages.
Availability
CY15B104QN-50SXA is available at Aetrix Electronics and suitable for industrial data loggers, smart energy meters, PLC I/O modules, and medical diagnostic sensor hubs requiring stable component supply across extended product lifecycles.
Supply support for CY15B104QN-50SXA 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 German semiconductor leader specializing in power management, sensing, and security solutions for automotive, industrial, and IoT markets.
The EXCELON™ LP F-RAM product line targets high-reliability, high-write-frequency nonvolatile memory applications - specifically replacing EEPROM and serial flash where latency, endurance, or power constraints dominate design decisions.
FAQ
Is CY15B104QN-50SXA pin-compatible with standard SPI EEPROMs like AT25DF041?
No. While it shares the same 8-pin SOIC footprint and SPI command structure (e.g., Read, Write Enable), CY15B104QN-50SXA lacks the Status Register Write In Progress (WIP) bit polling requirement and supports faster opcodes including special sector access. Firmware must be updated to remove polling loops and handle unique ID reads.
Does the 256-byte special sector require separate initialization before first use?
No. The special sector is factory-configured and fully functional at power-on. It behaves identically to main array memory but is hardened to survive three JEDEC J-STD-020 reflow cycles. No initialization sequence or OTP programming is needed - standard SPI write commands apply.
Can WP pin be left unconnected in designs that rely solely on software write protection?
No. Per datasheet Section 2, WP must be tied to VDD if unused. Leaving it floating violates DC specifications and may cause unpredictable status register locking due to noise-induced glitches on the active-low input, risking permanent write-disable conditions.
What SPI modes does CY15B104QN-50SXA support, and how are they selected?
It supports SPI Mode 0 (CPOL = 0, CPHA = 0) and Mode 3 (CPOL = 1, CPHA = 1). Mode selection is fixed by hardware - no register configuration. Mode 0 uses idle-low clock with sample-on-rise; Mode 3 uses idle-high clock with sample-on-fall. Host MCU must match the selected mode's timing before CS assertion.
CY15B104QN-50SXA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- Excelon™-Auto, F-RAM™
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- -
- Memory Type:
- Non-Volatile
- Memory Format:
- FRAM
- Technology:
- FRAM (Ferroelectric RAM)
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 50 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 8 ns
- Voltage - Supply:
- 1.8V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
CY15B104QN-50SXA FAQ
1.How can I place an order for CY15B104QN-50SXA through Aetrix?
Please submit a Request for Quotation (RFQ) for CY15B104QN-50SXA 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 CY15B104QN-50SXA reliable?
The price and inventory of CY15B104QN-50SXA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY15B104QN-50SXA is usually 5 days.
3.What payment methods are accepted for CY15B104QN-50SXA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY15B104QN-50SXA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY15B104QN-50SXA?
CY15B104QN-50SXA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY15B104QN-50SXA 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 CY15B104QN-50SXA?
For technical support, including CY15B104QN-50SXA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY15B104QN-50SXA requirements.
6.How does Aetrix verify that CY15B104QN-50SXA is sourced from the original manufacturer or authorized distributors?
All CY15B104QN-50SXA 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 CY15B104QN-50SXA meets industry standards.
7.What is the process for return or replacement of CY15B104QN-50SXA?
All CY15B104QN-50SXA units undergo pre-shipment inspection (PSI). If there is an issue with CY15B104QN-50SXA, 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 CY15B104QN-50SXA part is unused and in its original packaging.
Return procedure for CY15B104QN-50SXA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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