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Infineon Technologies CY15B108QN-20LPXCT
- Part No.:
- CY15B108QN-20LPXCT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-UQFN
- Datasheet:
-
CY15B108QN-20LPXCT.pdf
- Description:
- IC FRAM 8MBIT SPI 20MHZ 8GQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,220
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Product details
Overview
CY15B108QN-20LPXCT from Infineon is an 8 Mb serial ferroelectric RAM (F-RAM) organized as 1024K × 8, operating over SPI at up to 40 MHz with 1.8 V–3.6 V supply, 10¹⁵ write endurance, and 151-year data retention. It serves as a non-volatile memory replacement in real-time data logging systems where rapid, reliable byte-level writes are required without write delays or polling.
For engineers reviewing the CY15B108QN-20LPXCT datasheet, CY15B108QN-20LPXCT pinout, CY15B108QN-20LPXCT application, or CY15B108QN-20LPXCT equivalent, this device offers bus-speed writes, hardware/software write protection, dedicated 256-byte special sector, and industrial temperature support (–40°C to +85°C) - critical for deterministic embedded storage selection.
Technical Context
The CY15B108QN-20LPXCT implements a true SPI slave interface compliant with modes 0 (CPOL=0, CPHA=0) and 3 (CPOL=1, CPHA=1), supporting continuous read/write transfers without internal write latency. Its ferroelectric memory array eliminates erase cycles and enables immediate data persistence after each byte transfer.
It integrates a non-volatile status register, manufacturer/product ID registers, and writable 8-byte serial number storage. The dedicated 256-byte special sector retains data through up to three reflow soldering cycles, enabling board-level traceability and calibration storage independent of main array wear.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory density | 8 Mb (1024K × 8 bits); supports full byte-addressable non-volatile storage without block erase overhead. |
| Max SPI clock frequency | 40 MHz; enables ≤25 ns per bit transfer, achieving ~4 MB/s sustained write throughput. |
| Write endurance | 10¹⁵ read/write cycles; supports >273,000 writes/second continuously for 10 years without degradation. |
| Data retention | 151 years at +85°C; guarantees data integrity across full industrial temperature range without refresh. |
| Supply voltage | 1.8 V to 3.6 V; compatible with 1.8 V, 2.5 V, and 3.3 V logic domains without level shifting. |
| Active current (typ) | 2.6 mA at 40 MHz; enables low-power high-throughput logging in battery-backed or energy-constrained systems. |
| Deep power-down current (typ) | 0.90 µA; allows multi-year standby operation in always-on sensor nodes or metering devices. |
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 (tri-state I/O, <3.5 µA) when HIGH; initiates all SPI transactions on falling edge. |
| SCK | Serial clock input | Synchronizes all data transfers; inputs latched on rising edge, outputs driven on falling edge; supports 0–40 MHz with interruptible clock. |
| SI | Serial input | Receives opcodes, addresses, and write data; sampled on SCK rising edge; must be driven to valid logic level for IDD compliance. |
| SO | Serial output | Drives read data and status bits; tri-stated except during read cycles; transitions occur on SCK falling edge. |
| WP | Write protect input | Hardware lock for status register writes when WPEN=1; must be tied to VDD if unused to prevent accidental protection. |
| VSS | Ground | Reference return path for all internal circuitry; requires low-impedance connection to system ground plane. |
| VDD | Power supply | Primary power rail (1.8–3.6 V); supplies core logic, F-RAM array, and I/O buffers; bypass capacitor recommended. |
| DNU | Do-not-use terminal | No internal connection; must remain floating or tied to VDD - not grounded or driven actively. |
Key Features
| Feature | Design Value |
|---|---|
| Instant non-volatile write | Zero write latency: data persists immediately after SI shift-in completes; no polling or timeout handling required in firmware. |
| Dual write protection | Hardware (WP pin) + software (WRDI instruction + block-protection bits) enables layered security against unintended writes. |
| Dedicated special sector | 256-byte isolated F-RAM region survives ≥3 reflow cycles; ideal for storing factory calibration, MAC address, or board ID. |
| Unique device identification | Factory-programmed 64-bit unique ID + 16-bit manufacturer/product ID + 8-byte user-writable serial number for traceability. |
| Multi-mode power management | Four low-power states: standby (3.5 µA), deep power-down (0.90 µA), hibernate (0.1 µA), and active (2.6 mA @ 40 MHz). |
Applications
| Industrial Data Logger | Smart Metering System |
|---|---|
|
Use Scenario: Continuous timestamped sensor sampling (e.g., temperature, pressure) at 100 Hz with power-loss resilience. IC Role / Device Role / Timing Role: Non-volatile scratchpad memory for atomic write buffering; stores last valid reading before brownout. Use Value: Eliminates flash wear-out and EEPROM write delays, enabling guaranteed sub-millisecond write commit and 151-year data retention. |
Use Scenario: Storing tariff schedules, consumption history, and tamper-event logs in electricity/water meters. IC Role / Device Role / Timing Role: Primary event-logging memory interfaced directly to metrology MCU via SPI. Use Value: Supports >10¹⁴ write cycles - sufficient for hourly logging over 114 years without replacement or wear leveling. |
| PLC I/O Module | Medical Diagnostic Device |
|
Use Scenario: Capturing real-time I/O state changes and fault records in programmable logic controllers. IC Role / Device Role / Timing Role: Deterministic non-volatile buffer for cyclic process data and diagnostic snapshots. Use Value: Enables microsecond-accurate write timing without bus arbitration stalls, meeting IEC 61131-3 cycle-time constraints. |
Use Scenario: Storing calibration coefficients, usage counters, and FDA-mandated audit trails in portable diagnostics. IC Role / Device Role / Timing Role: Secure, traceable configuration and compliance log storage with unique device ID binding. Use Value: 64-bit unique ID + 8-byte serial number ensures device-level accountability and meets 21 CFR Part 11 electronic record requirements. |
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-20LPXC | Same die, 8-pin GQFN package (NRND status); 4.0 mm × 4.0 mm, 0.5 mm pitch; no DNU pin - SO/SI share single I/O pin. | Used in space-constrained PCBs requiring ultra-small footprint; incompatible with SOIC layout; not recommended for new designs. | Select only for legacy GQFN-based platforms; verify solder reflow compatibility and signal integrity at 40 MHz. |
| FM25V05-G | Cypress (now Infineon) 512 Kb F-RAM; 1.7–2.2 V supply; max 40 MHz SPI; identical architecture but 1/16 memory size. | Suitable for low-density applications like parameter storage or small firmware config; insufficient for full data logging buffers. | Choose when memory requirement is ≤512 Kb and 1.7–2.2 V operation is mandatory; not a drop-in replacement for 8 Mb capacity. |
Compared with CY15B108QSN-20LPXC and FM25V05-G, the CY15B108QN-20LPXCT delivers full 8 Mb capacity in production-ready SOIC packaging with broad voltage support (1.8–3.6 V), making it optimal for new industrial designs requiring long-term supply stability and layout flexibility.
Availability
CY15B108QN-20LPXCT is available at Aetrix Electronics and suitable for industrial data loggers, smart metering systems, and PLC I/O modules requiring stable component supply, long-life non-volatile storage, and RoHS-compliant manufacturing.
Supply support for CY15B108QN-20LPXCT 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 high-reliability memory solutions, with global manufacturing and quality certification to ISO/TS 16949 and ISO 9001.
The EXCELON™ LP F-RAM product line targets deterministic, high-endurance non-volatile storage in industrial automation, energy infrastructure, and medical electronics - replacing legacy EEPROM and serial flash where write speed and reliability are critical.
FAQ
Is CY15B108QN-20LPXCT pin-compatible with standard SPI EEPROM or flash devices?
Yes - it uses industry-standard 8-pin SOIC with identical CS/SCK/SI/SO/WP/VSS/VDD pin assignments and SPI command set compatibility. Firmware migration requires only minor driver updates to remove polling loops, as writes complete instantly without status checking.
Does the 256-byte special sector require separate addressing or commands?
Yes - it is accessed using dedicated opcodes (0x77 for write, 0x78 for read) and occupies physical addresses 0xFFFC00–0xFFFCFF. Its contents survive reflow because the ferroelectric layer is shielded from thermal stress during soldering, unlike standard F-RAM cells.
What happens if the WP pin is left floating?
Leaving WP floating violates the datasheet requirement and may cause unpredictable status register locking. The pin must be pulled to VDD via a 10 kΩ resistor or directly connected to VDD when not used - floating increases risk of spurious write protection activation.
Can the unique device ID be overwritten by the user?
No - the 64-bit unique ID is factory-laser-trimmed and permanently stored in ROM. Only the 8-byte serial number register (accessible via opcode 0x1B/0x1C) is user-writable; it supports one-time or field-updatable board identification without affecting the immutable UID.
CY15B108QN-20LPXCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- Excelon™-LP,F-RAM™
- Package/Case:
- 8-UQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- 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:
- 20 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 20 ns
- Voltage - Supply:
- 1.8V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-GQFN (3.23x3.28)
CY15B108QN-20LPXCT FAQ
1.How can I place an order for CY15B108QN-20LPXCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY15B108QN-20LPXCT 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-20LPXCT reliable?
The price and inventory of CY15B108QN-20LPXCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY15B108QN-20LPXCT is usually 5 days.
3.What payment methods are accepted for CY15B108QN-20LPXCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY15B108QN-20LPXCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY15B108QN-20LPXCT?
CY15B108QN-20LPXCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY15B108QN-20LPXCT 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-20LPXCT?
For technical support, including CY15B108QN-20LPXCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY15B108QN-20LPXCT requirements.
6.How does Aetrix verify that CY15B108QN-20LPXCT is sourced from the original manufacturer or authorized distributors?
All CY15B108QN-20LPXCT 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-20LPXCT meets industry standards.
7.What is the process for return or replacement of CY15B108QN-20LPXCT?
All CY15B108QN-20LPXCT units undergo pre-shipment inspection (PSI). If there is an issue with CY15B108QN-20LPXCT, 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-20LPXCT part is unused and in its original packaging.
Return procedure for CY15B108QN-20LPXCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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