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Infineon Technologies CY15B108QN-40BFXI
- Part No.:
- CY15B108QN-40BFXI
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-UFLGA
- Datasheet:
-
CY15B108QN-40BFXI.pdf
- Description:
- IC FRAM 8MBIT SPI 8UFLGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,284
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Product details
Overview
CY15B108QN-40BFXI 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-40BFXI datasheet, CY15B108QN-40BFXI pinout, CY15B108QN-40BFXI application, or CY15B108QN-40BFXI 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 legacy and new microcontroller interfaces.
Technical Context
The CY15B108QN-40BFXI implements a true SPI slave interface with zero-write-latency F-RAM core, eliminating erase-before-write and status polling. Its memory architecture supports byte-level random access over SPI using 3-byte addresses (20-bit effective), with upper 4 address bits ignored - enabling direct replacement of serial EEPROM/flash in existing layouts.
It integrates a non-volatile status register, device ID (manufacturer/product ID), unique device ID, and 8-byte writable serial number registers. The dedicated 256-byte special sector is electrically isolated and qualified for retention through three standard Pb-free reflow cycles - critical for board-level traceability in automotive and industrial control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory density | 8 Mb (1024K × 8 bits) - supports full firmware parameter storage or high-frequency sensor buffer without external expansion. |
| SPI max frequency | 40 MHz - enables 4 MB/s sustained write throughput, matching high-speed MCU DMA transfers. |
| Write endurance | 10¹⁵ cycles - sustains >1000 writes/sec continuously for 31+ years, eliminating wear leveling firmware overhead. |
| Data retention | 151 years at +85°C - guarantees data integrity across full industrial lifecycle without refresh or backup power. |
| Supply voltage | 1.8 V to 3.6 V - interoperable with 1.8 V logic families and 3.3 V host systems without level shifters. |
| Operating temp | –40°C to +85°C - qualified for under-hood automotive ECUs and factory-floor PLCs without derating. |
| Deep power-down current | 0.90 µA - 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 (3.5 µA) when HIGH; initiates SPI transaction on falling edge. |
| 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 | Accepts 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 commands; tristated otherwise; transitions on SCK falling edge. |
| WP | Write protect input | Hardware lock: disables status register writes when WPEN = 1; must tie to VDD if unused. |
| 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 mandatory per datasheet layout guidelines. |
| DNU | Do-not-use terminal | No internal connection; must float or tie to VDD - not connected to any functional circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Instant non-volatile write | Zero write latency: data committed immediately after SPI byte transfer - no polling, no timeout handling in firmware. |
| Dedicated 256-byte special sector | Retains content through ≥3 Pb-free reflow cycles - enables permanent board serialization without post-solder programming. |
| H/W + S/W write protection | Three-tier security: WP pin, WRDI instruction, and block protection (1/4, 1/2, or full array) - prevents accidental overwrite in field-deployed units. |
| Unique device ID + serial number | Factory-programmed 64-bit UID + user-writable 8-byte serial register - supports secure boot binding and asset tracking in IIoT gateways. |
| Low-power deep sleep mode | 0.90 µA consumption - extends coin-cell life to >10 years in battery-backed data loggers with hourly wake-ups. |
Applications
| Industrial Data Logger | Automotive ECU Parameter Storage |
|---|---|
Use Scenario: Continuous capture of engine sensor data (RPM, temperature, O2) at 1 kHz with power-loss resilience. IC Role / Device Role / Timing Role: Non-volatile buffer storing last 10 seconds of raw samples before safe shutdown; accessed via SPI by MCU during boot. Use Value: Eliminates flash wear-out risk and ensures no data loss during unexpected ignition-off events due to instant write commit. | Use Scenario: Storing adaptive learning values (fuel trim, idle air control) that update every drive cycle. IC Role / Device Role / Timing Role: SPI-connected configuration memory holding calibration deltas; written on key-off after validation checksum. Use Value: Supports >1 million drive cycles without degradation - exceeds OEM 15-year vehicle lifetime requirement. |
| Smart Meter Firmware Parameter Table | Medical Infusion Pump Event Log |
Use Scenario: Field-upgradable tariff tables and billing parameters updated remotely via PLC or RF link. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage for regulatory-critical configuration data; accessed only during firmware update sequence. Use Value: Hardware write protection (WP pin + status register lock) prevents unauthorized modification during OTA updates. | Use Scenario: Tamper-evident recording of dose delivery time, volume, and operator ID for FDA audit trail. IC Role / Device Role / Timing Role: High-integrity event journal with guaranteed write persistence even during AC power interruption. Use Value: 151-year data retention meets 21 CFR Part 11 long-term recordkeeping mandates without battery backup. |
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 |
|---|---|---|---|
| CY15B108QN-40SXI | Same die, 8-pin SOIC package but commercial temp (0°C to +70°C); identical electrical specs and timing. | Not rated for industrial ambient or thermal cycling; unsuitable for under-hood or factory-floor deployment. | Select only for cost-sensitive consumer-grade products with controlled environments. |
| FM25V05-SG | Cypress (Infineon) 512 Kb F-RAM; 40 MHz SPI, 2.0–3.6 V, –40°C to +85°C; smaller density, same architecture. | Limited to applications needing ≤512 Kb persistent storage; insufficient for full parameter sets or extended logs. | Choose when memory footprint and BOM count must be minimized, and density < 1 Mb is acceptable. |
Compared with CY15B108QN-40SXI and FM25V05-SG, the CY15B108QN-40BFXI uniquely delivers 8 Mb industrial-grade F-RAM in SOIC with guaranteed 151-year retention - enabling single-chip replacement of multi-die flash+EEPROM solutions in space-constrained, high-reliability designs.
Availability
CY15B108QN-40BFXI is available at Aetrix Electronics and suitable for industrial data loggers, automotive electronic control units, and smart meter firmware parameter storage requiring stable component supply across extended product lifecycles.
Supply support for CY15B108QN-40BFXI 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 manufacturer specializing in power management, automotive ICs, and non-volatile memory solutions with global manufacturing and quality certification to ISO/TS 16949 and AEC-Q100.
The EXCELON™ LP F-RAM product line targets high-reliability, low-power embedded systems demanding instant write, extreme endurance, and long-term data retention - specifically engineered to replace serial flash and EEPROM in mission-critical industrial and automotive applications.
FAQ
Is CY15B108QN-40BFXI pin-compatible with standard SPI serial flash devices?
Yes - it uses identical 8-pin SOIC pinout (CS, SCK, SI, SO, WP, VSS, VDD, DNU) and supports SPI modes 0 and 3. No PCB redesign is needed when replacing devices like AT25DF041 or W25Q80, though firmware must disable polling loops since writes complete instantly.
Does the 256-byte special sector require separate addressing or command set?
Yes - it uses dedicated opcodes (0x77 for read, 0x76 for write) and is accessed via separate 1-byte address (0x00–0xFF). Its contents survive reflow because it's fabricated with enhanced ferroelectric layer stability, not software-emulated.
What is the maximum junction temperature during solder reflow for CY15B108QN-40BFXI?
The SOIC package is qualified for JEDEC J-STD-020D Level 3 moisture sensitivity, with peak reflow temperature of 260°C for 30 seconds maximum. The 256-byte special sector retains data through this profile - verified per datasheet Section 15 package diagrams and qualification reports.
Can the WP pin be left unconnected if software write protection is used exclusively?
No - the datasheet explicitly requires WP to be tied to VDD if unused (Section 2, Pin Definitions). Leaving it floating violates DC specifications and may cause erratic status register locking behavior due to noise-induced false LOW transitions.
CY15B108QN-40BFXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-UFLGA
- Packaging:
- Tray
- 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-40BFXI FAQ
1.How can I place an order for CY15B108QN-40BFXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY15B108QN-40BFXI 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-40BFXI reliable?
The price and inventory of CY15B108QN-40BFXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY15B108QN-40BFXI is usually 5 days.
3.What payment methods are accepted for CY15B108QN-40BFXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY15B108QN-40BFXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY15B108QN-40BFXI?
CY15B108QN-40BFXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY15B108QN-40BFXI 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-40BFXI?
For technical support, including CY15B108QN-40BFXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY15B108QN-40BFXI requirements.
6.How does Aetrix verify that CY15B108QN-40BFXI is sourced from the original manufacturer or authorized distributors?
All CY15B108QN-40BFXI 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-40BFXI meets industry standards.
7.What is the process for return or replacement of CY15B108QN-40BFXI?
All CY15B108QN-40BFXI units undergo pre-shipment inspection (PSI). If there is an issue with CY15B108QN-40BFXI, 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-40BFXI part is unused and in its original packaging.
Return procedure for CY15B108QN-40BFXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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