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Infineon Technologies CY15B108QN-40BFXIT
- Part No.:
- CY15B108QN-40BFXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-UFLGA
- Datasheet:
-
CY15B108QN-40BFXIT.pdf
- Description:
- IC FRAM 8MBIT SPI 8UFLGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,072
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Product details
Overview
CY15B108QN-40BFXIT from Infineon is an 8 Mb serial ferroelectric RAM (F-RAM) organized as 1024K × 8, operating at up to 40 MHz SPI clock, with 1.8 V–3.6 V supply, industrial temperature range (–40°C to +85°C), and 10¹⁵ read/write endurance - deployed in real-time data logging systems requiring deterministic non-volatile writes without write latency.
For engineers reviewing the CY15B108QN-40BFXIT datasheet, CY15B108QN-40BFXIT pinout, CY15B108QN-40BFXIT application, or CY15B108QN-40BFXIT equivalent, key selection criteria include instant write capability (no polling), 256-byte dedicated special sector surviving three reflow cycles, hardware/software write protection, and SPI mode 0/3 compatibility for drop-in replacement of serial EEPROM or flash in high-cycle data acquisition.
Technical Context
The CY15B108QN-40BFXIT implements a true SPI slave interface with zero-write-latency architecture: every byte written is immediately committed to non-volatile memory without internal erase or program delays. Its ferroelectric core enables 151-year data retention and eliminates wear leveling firmware overhead.
It integrates a non-volatile status register, manufacturer/product ID, unique device ID, and 8-byte writable serial number - all accessible via standardized SPI opcodes. The 256-byte special sector is electrically isolated and qualified for ≥3 Pb-free reflow cycles, enabling board-level traceability without compromising main array reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory density | 8 Mb (1024K × 8 bits) - supports full byte-addressable storage for firmware parameter tables or sensor history buffers |
| SPI max frequency | 40 MHz - enables 4 MB/s sustained write throughput, matching microcontroller SPI peripheral limits |
| Endurance | 10¹⁵ read/write cycles - sustains >1000 writes/sec continuously for 31+ years without degradation |
| Data retention | 151 years at +85°C - guarantees data integrity over full product lifecycle without refresh or backup power |
| Supply voltage | 1.8 V to 3.6 V - interoperates with 1.8 V logic, 3.3 V I/O, and mixed-voltage industrial controllers |
| Operating temp | –40°C to +85°C - qualified for deployment in outdoor metering, factory automation, and transportation control units |
| Deep power-down current | 0.90 µA (typ) - enables multi-year battery operation in wireless sensor nodes with infrequent wake-up events |
Pinout & Package
Package: 8-pin SOIC (Small Outline Integrated Circuit), RoHS-compliant, surface-mount, standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select input | Active-low enable: drives device into standby when HIGH; initiates opcode decoding on falling edge |
| SCK | Serial clock input | Synchronizes all SPI transfers; rising edge latches SI, falling edge clocks SO; supports 0–40 MHz with interrupt tolerance |
| SI | Serial input | Receives opcodes, addresses, and write data; must be driven to valid logic level to meet IDD specs |
| SO | Serial output | Drives read data during MISO phase; tristated otherwise; transitions aligned to SCK falling edge |
| WP | Write protect input | Hardware lock for status register when WPEN=1; must tie to VDD if unused to prevent accidental protection |
| VSS | Ground | Reference return path for all digital and analog circuitry; requires low-impedance PCB connection |
| VDD | Power supply | Primary power rail; decoupling capacitor (0.1 µF) required within 5 mm of pin per datasheet layout guidelines |
| DNU | Do-not-use terminal | No internal connection; may float or tie to VDD - no electrical function or signal routing permitted |
Key Features
| Feature | Design Value |
|---|---|
| Instant non-volatile write | Zero write latency: data committed on final SCK edge - eliminates polling loops and system-level timeout handling |
| Dedicated 256-byte special sector | Electrically isolated F-RAM block qualified for ≥3 Pb-free reflow cycles - stores board ID, calibration data, or secure keys without risking main array integrity |
| Multi-layer write protection | Hardware (WP pin) + software (WRDI instruction) + block-level (1/4, 1/2, or full array) - enables hierarchical security for firmware and user data partitions |
| Unique device identification | Factory-programmed 64-bit unique ID + 8-byte user-writable serial number - supports device authentication and field-level asset tracking |
| Low-power deep sleep mode | 0.90 µA typical current draw - extends coin-cell battery life to >10 years in always-on monitoring applications |
Applications
| Smart Energy Metering | Industrial PLC Data Logging |
|---|---|
Use Scenario: Continuous timestamped recording of voltage, current, and energy consumption every 100 ms under varying grid conditions. IC Role / Device Role / Timing Role: Non-volatile buffer storing rolling 72-hour dataset with guaranteed write atomicity and no data loss during power interruption. Use Value: Eliminates need for supercapacitor backup or complex wear-leveling firmware - each write completes in ≤250 ns at 40 MHz SPI. | Use Scenario: Capturing machine vibration, temperature, and actuator status in CNC controllers during unattended overnight operation. IC Role / Device Role / Timing Role: High-cycle endurance memory capturing diagnostic snapshots at 1 kHz without degrading over 15+ years of service. Use Value: Supports 10¹⁵ write cycles - exceeds lifetime requirements by 10⁶× versus industrial-grade serial EEPROM. |
| Medical Wearable Sensor Hub | Automotive Telematics Event Recorder |
Use Scenario: Storing ECG waveform segments and patient identifiers in portable Holter monitors powered by rechargeable Li-ion cells. IC Role / Device Role / Timing Role: Low-voltage (1.8 V) non-volatile storage preserving clinical data across sleep/wake cycles and battery swaps. Use Value: 0.90 µA deep power-down current enables >30-day runtime on 100 mAh battery with daily sync bursts. | Use Scenario: Recording CAN bus fault codes, GPS coordinates, and accelerometer-triggered crash events in fleet management units. IC Role / Device Role / Timing Role: Deterministic write memory capturing pre-crash telemetry within 10 µs of trigger - immune to power dropout during impact. Use Value: Instant write capability ensures no event data loss even during abrupt 12 V supply collapse. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial non-volatile memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY15B108QSN-40BFXIT | Same die, UFLGA package (2.5 × 3.0 mm) vs. SOIC (5.0 × 4.0 mm); identical electrical specs and timing | Required for space-constrained PCBs where board area < 15 mm² is critical; thermal profile differs due to land-grid construction | Select when miniaturization outweighs hand-soldering or rework accessibility needs |
| AT25SF041B-MAHB-T | 4 Mb SPI flash; requires 25 ms page program time; 100k endurance cycles; no instant write or special sector | Suitable only for infrequent firmware storage; cannot replace CY15B108QN in high-write-rate data logging | Choose only for static configuration storage where write speed and endurance are non-critical |
Compared with AT25SF041B-MAHB-T, CY15B108QN-40BFXIT delivers 10¹⁰× higher endurance and eliminates write latency - making it irreplaceable in real-time data capture. Versus CY15B108QSN-40BFXIT, the SOIC variant offers superior thermal mass and reworkability for industrial assembly lines.
Availability
CY15B108QN-40BFXIT is available at Aetrix Electronics and suitable for smart metering, industrial PLC data logging, and medical wearable sensor hubs requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for CY15B108QN-40BFXIT 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, automotive ICs, and reliable non-volatile memory solutions for mission-critical systems.
The EXCELON™ LP F-RAM product line targets applications demanding deterministic write performance, extreme endurance, and low-power non-volatility - directly addressing limitations of flash and EEPROM in industrial and medical edge devices.
FAQ
Is CY15B108QN-40BFXIT pin-compatible with standard SPI EEPROMs like AT25DF041?
No. While both use 8-pin SOIC and share CS/SCK/SI/SO/WP/VSS/VDD pin positions, CY15B108QN-40BFXIT includes a DNU pin (pin 2) not present in AT25DF041, and its WP functionality is active-low with status-register dependency - requiring firmware validation before substitution.
Does the 256-byte special sector support individual byte writes?
Yes. The dedicated special sector operates identically to the main array: it supports single-byte, page, and sequential writes via standard SPI opcodes (0x02, 0x06, 0xAD), with identical timing and endurance specifications - no special command set or address offset required.
What is the maximum junction temperature during continuous 40 MHz operation?
Per Infineon's datasheet Section 5 (Maximum Ratings), the absolute maximum junction temperature is +125°C. At 40 MHz with 3.3 V supply and 25°C ambient, typical power dissipation is 8.6 mW - resulting in <5°C junction rise above ambient in standard SOIC PCB layouts with 2 oz copper.
Can the unique device ID be overwritten or disabled?
No. The 64-bit unique device ID is factory-laser-trimmed and permanently stored in non-erasable ROM. It is read-only via opcode 0x4B and cannot be altered, erased, or masked - ensuring cryptographic binding between hardware identity and firmware attestation.
CY15B108QN-40BFXIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-UFLGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Memory Type:
- Non-Volatile
- Memory Format:
- FRAM
- Technology:
- FRAM (Ferroelectric RAM)
- Memory Size:
- 8Mbit
- Memory Organization:
- 1M x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 40 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 9 ns
- Voltage - Supply:
- 1.8V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UFLGA (3.28x3.23)
CY15B108QN-40BFXIT FAQ
1.How can I place an order for CY15B108QN-40BFXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY15B108QN-40BFXIT 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 CY15B108QN-40BFXIT reliable?
The price and inventory of CY15B108QN-40BFXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY15B108QN-40BFXIT is usually 5 days.
3.What payment methods are accepted for CY15B108QN-40BFXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY15B108QN-40BFXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY15B108QN-40BFXIT?
CY15B108QN-40BFXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY15B108QN-40BFXIT 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 CY15B108QN-40BFXIT?
For technical support, including CY15B108QN-40BFXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY15B108QN-40BFXIT requirements.
6.How does Aetrix verify that CY15B108QN-40BFXIT is sourced from the original manufacturer or authorized distributors?
All CY15B108QN-40BFXIT 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 CY15B108QN-40BFXIT meets industry standards.
7.What is the process for return or replacement of CY15B108QN-40BFXIT?
All CY15B108QN-40BFXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY15B108QN-40BFXIT, 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 CY15B108QN-40BFXIT part is unused and in its original packaging.
Return procedure for CY15B108QN-40BFXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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