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Infineon Technologies CY15B108QN-40LPXIT
- Part No.:
- CY15B108QN-40LPXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-UQFN
- Datasheet:
-
CY15B108QN-40LPXIT.pdf
- Description:
- IC FRAM 8MBIT SPI 40MHZ 8GQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,026
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Product details
Overview
CY15B108QN-40LPXIT 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, 10¹⁵ write endurance, and 151-year data retention. It serves as a non-volatile memory replacement for EEPROM/flash in high-write-cycle industrial data loggers, sensor nodes, and metering systems.
For engineers reviewing the CY15B108QN-40LPXIT datasheet, CY15B108QN-40LPXIT pinout, CY15B108QN-40LPXIT application, or CY15B108QN-40LPXIT equivalent, this device delivers instant write-without-delay operation, hardware/software write protection, dedicated 256-byte reflow-survivable sector, and SPI mode 0/3 compatibility - critical for deterministic real-time logging and power-fail-safe storage.
Technical Context
The CY15B108QN-40LPXIT implements a true SPI slave interface with zero-write-latency architecture: data commits immediately upon byte transfer completion, eliminating polling and timeout handling. Its ferroelectric memory array enables simultaneous read/write capability without erase cycles, unlike flash or EEPROM.
It integrates a non-volatile status register, manufacturer/product ID, unique device ID, and 8-byte user-writable serial number. The WP pin provides hardware-level write lock for status register configuration, while software commands support quarter/half/full array block protection - enabling secure, hierarchical memory access control in embedded firmware.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory density | 8 Mb (1024K × 8 bits); supports full byte-addressable SPI access without page boundaries or erase overhead |
| SPI speed | Up to 40 MHz; enables ≤250 ns per bit transfer, achieving ~4 MB/s effective write throughput |
| Write endurance | 10¹⁵ read/write cycles; sustains continuous logging at 1 kHz for >31 years without wear-out |
| Data retention | 151 years at +85°C; eliminates periodic refresh or backup power requirements in sealed industrial enclosures |
| Supply voltage | 1.8 V to 3.6 V; interoperable with 1.8 V, 2.5 V, and 3.3 V microcontroller I/O domains without level shifters |
| Operating temp | –40°C to +85°C industrial grade; qualified for deployment in motor drives, PLCs, and outdoor utility meters |
| Deep power-down current | 0.90 µA typical; enables multi-year battery operation in wireless sensor endpoints with infrequent wake-ups |
Pinout & Package
Package: 8-pin SOIC (Small Outline Integrated Circuit), RoHS-compliant, surface-mount, standard footprint compatible with automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select input | Active-low enable; places device in standby (3.5 µA) when HIGH; must fall before each opcode to initiate transaction |
| SCK | Serial clock input | Synchronizes all I/O; rising edge latches SI, falling edge drives SO; supports 0–40 MHz with interruptible clock |
| 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 only during read cycles; tristated otherwise; transitions on 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 | 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; powers internal charge pumps and logic; decoupling capacitor required per datasheet layout guidelines |
| DNU | Do-not-use terminal | No internal connection; must remain floating or tied to VDD; not a test pad or thermal pad |
Key Features
| Feature | Design Value |
|---|---|
| Instant non-volatile write | Zero latency commit: data written to non-volatile array immediately after SPI byte transfer completes - no polling, no delay, no fail-safe overhead |
| Dedicated 256-byte special sector | Retains data through ≥3 standard Pb-free reflow cycles (260°C peak); ideal for storing calibration constants or board-specific identifiers |
| Multi-layer write protection | Combines hardware (WP pin), software disable (WRDI), and configurable block locks (1/4, 1/2, or full array) - prevents unintended firmware corruption |
| Unique device identification | Factory-programmed 64-bit unique ID + 8-byte user-writable serial number register - enables secure device binding and traceability in IoT deployments |
| Low-power deep sleep mode | 0.90 µA typical current draw; allows battery-powered endpoints to retain full memory state for >10 years on a single coin cell |
Applications
| Industrial Data Logger | Smart Energy Meter |
|---|---|
Use Scenario: Continuous timestamped sensor sampling (temperature, pressure, vibration) at 100 Hz with power-loss resilience. IC Role / Device Role / Timing Role: Non-volatile scratchpad memory holding last 10 seconds of raw data prior to safe flash commit or cloud upload. Use Value: Eliminates risk of data loss during brownouts by writing every sample instantly - no buffer overflow or delayed commit failure. | Use Scenario: Storing tariff schedules, billing registers, and tamper-event logs in DIN-rail mounted electricity meters. IC Role / Device Role / Timing Role: Primary event-logging memory with guaranteed 151-year retention and immunity to write-cycle exhaustion over 20+ year field life. Use Value: Replaces EEPROM requiring 5 ms per byte write; enables sub-millisecond logging of voltage sags, phase loss, or relay actuations. |
| PLC I/O Module | Medical Diagnostic Sensor Hub |
Use Scenario: Capturing real-time analog input histories and diagnostic fault codes in programmable logic controller backplanes. IC Role / Device Role / Timing Role: Deterministic non-volatile buffer for cyclic process data, synchronized to 1 ms scan intervals. Use Value: Guarantees write completion within one SPI frame (<250 ns @40 MHz), enabling hard real-time compliance without software retries. | Use Scenario: Recording calibrated transducer offsets, self-test results, and usage counters in portable ultrasound or ECG front-ends. IC Role / Device Role / Timing Role: Secure, reflow-survivable storage for factory-trimmed coefficients and regulatory audit trails. Use Value: Special sector survives PCB rework and sterilization cycles; unique ID binds calibration data to specific hardware unit for FDA traceability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar non-volatile serial memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY15B108QSN-40LPXI | Same die, 8-pin GQFN package (NRND status); 4.5 mm × 4.5 mm footprint, lower profile than SOIC | Preferred for space-constrained PCBs where SOIC height exceeds mechanical envelope | Select only for new designs if GQFN assembly capability and lifecycle commitment are confirmed |
| AT25DF041A-SSH-T | 4 Mb SPI flash; 100k write cycles; 20 ms typical page program time; requires erase before write | Suitable for firmware storage or infrequent parameter updates - not for high-frequency logging | Choose only when cost sensitivity outweighs write endurance and latency requirements |
Compared with CY15B108QN-40LPXIT, the GQFN variant offers identical electrical behavior in a smaller package but carries NRND status, while the AT25DF041A flash introduces erase latency and cycle limitations that compromise real-time data integrity in high-write scenarios.
Availability
CY15B108QN-40LPXIT is available at Aetrix Electronics and suitable for industrial data loggers, smart energy meters, PLC I/O modules, and medical sensor hubs requiring stable component supply across extended product lifecycles.
Supply support for CY15B108QN-40LPXIT 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 memory solutions for industrial, automotive, and IoT applications.
The EXCELON™ LP F-RAM product line targets high-reliability, high-endurance non-volatile storage where flash and EEPROM fail - specifically engineered for deterministic write performance and long-term data integrity in harsh environments.
FAQ
Is CY15B108QN-40LPXIT pin-compatible with standard SPI EEPROMs like AT25XXX series?
Yes - it uses identical 8-pin SOIC pinout and SPI command set (with minor opcode extensions). CS, SCK, SI, SO, WP, VSS, and VDD map directly. No hardware redesign is needed for drop-in replacement, though firmware must handle F-RAM's lack of write latency and updated status register bits.
Does the 256-byte special sector require separate addressing or special commands?
No - it resides at fixed address 0xFFFC00–0xFFFCFF and is accessed using standard READ/WRITE opcodes. Its reflow survivability is inherent to physical construction, not command-driven; no special initialization or locking is required beyond normal sector protection settings.
What is the maximum achievable sustained write bandwidth in continuous burst mode?
At 40 MHz SPI clock with 8-bit data, theoretical max is 4 MB/s. Real-world sustained throughput is ~3.7 MB/s due to opcode/address overhead and CS assertion timing. Each byte writes instantly - no inter-byte delay - enabling true streaming to memory without gaps or buffering.
Can the unique device ID be overwritten or disabled?
No - the 64-bit unique ID is factory-laser-programmed into ROM and is read-only. It cannot be altered, erased, or disabled. The 8-byte serial number register is user-writable via WRSR/WRDI commands but resides in separate non-volatile storage and does not affect the immutable unique ID.
CY15B108QN-40LPXIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- Excelon™-LP,F-RAM™
- Package/Case:
- 8-UQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- 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-GQFN (3.23x3.28)
CY15B108QN-40LPXIT FAQ
1.How can I place an order for CY15B108QN-40LPXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY15B108QN-40LPXIT 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-40LPXIT reliable?
The price and inventory of CY15B108QN-40LPXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY15B108QN-40LPXIT is usually 5 days.
3.What payment methods are accepted for CY15B108QN-40LPXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY15B108QN-40LPXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY15B108QN-40LPXIT?
CY15B108QN-40LPXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY15B108QN-40LPXIT 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-40LPXIT?
For technical support, including CY15B108QN-40LPXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY15B108QN-40LPXIT requirements.
6.How does Aetrix verify that CY15B108QN-40LPXIT is sourced from the original manufacturer or authorized distributors?
All CY15B108QN-40LPXIT 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-40LPXIT meets industry standards.
7.What is the process for return or replacement of CY15B108QN-40LPXIT?
All CY15B108QN-40LPXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY15B108QN-40LPXIT, 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-40LPXIT part is unused and in its original packaging.
Return procedure for CY15B108QN-40LPXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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