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Infineon Technologies CY15B104QI-20BFXIT
- Part No.:
- CY15B104QI-20BFXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-UFLGA
- Datasheet:
-
CY15B104QI-20BFXIT.pdf
- Description:
- IC FRAM 4MBIT SPI 8UFLGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,450
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Product details
Overview
CY15B104QI-20BFXIT from Infineon is a 4-Mbit serial ferroelectric RAM (F-RAM) organized as 512K × 8, operating over SPI at up to 20 MHz with 1.8 V–3.6 V supply, 1015 write endurance, and 151-year data retention. It delivers instant nonvolatile writes without polling, supports hardware/software write protection, and includes a dedicated 256-byte special sector surviving three reflow cycles - deployed in industrial data loggers for high-frequency sensor timestamping.
For engineers reviewing the CY15B104QI-20BFXIT datasheet, CY15B104QI-20BFXIT pinout, CY15B104QI-20BFXIT application, or CY15B104QI-20BFXIT equivalent, key selection criteria include SPI mode 0/3 compatibility, inrush current control (1.5 mA typ), deep power-down current (0.70 µA), WP pin behavior under status register WPEN=1, and GQFN/UFLGA package thermal performance in –40°C to +85°C environments.
Technical Context
The CY15B104QI-20BFXIT implements a true SPI slave interface with zero-latency write execution: data commits immediately upon byte transfer completion, eliminating wait states and polling overhead. Its internal architecture integrates a nonvolatile status register, device ID/serial number registers, and a dedicated 256-byte F-RAM sector with enhanced solder-reflow survivability.
It uses ferroelectric memory cells enabling 1015 read/write cycles and 151-year data retention at +85°C - surpassing EEPROM by 106× in endurance and flash by orders of magnitude in write speed and reliability. The device supports dual write-protection layers: hardware via active-low WP pin (when WPEN=1) and software via WRDI instruction and block protection bits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory density | 4 Mbit (512K × 8), enabling compact firmware/data storage without external address latches |
| SPI clock frequency | Up to 20 MHz, supporting 2.5 MB/s sustained write throughput with no bus arbitration delay |
| Write endurance | 1015 cycles, permitting continuous logging at 1 kHz for >31 years without wear-out |
| Data retention | 151 years at +85°C, eliminating periodic refresh or backup power requirements |
| Supply voltage | 1.8 V to 3.6 V, compatible with 1.8 V, 2.5 V, and 3.3 V system rails without level shifters |
| Deep power-down current | 0.70 µA (typ), enabling multi-year battery operation in remote IoT endpoints |
| Inrush current | 1.5 mA (typ) at power-up, minimizing stress on shared LDOs in multi-rail systems |
Pinout & Package
Package: 8-pin ultra-thin fine-pitch land grid array (UFLGA), 2.0 mm × 2.5 mm × 0.5 mm, RoHS-compliant, NRND status noted but fully functional for industrial designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip select input | Active-low enable; places device in standby (2.3 µA) when HIGH, synchronizes all SPI opcodes on falling edge |
| SCK | Serial clock input | Drives all timing; inputs sampled on rising edge, SO outputs driven on falling edge; supports 0–20 MHz with interruptible clock |
| SI | Serial data input | Accepts opcodes, addresses, and write data; must be held valid during operation to meet IDD specs |
| SO | Serial data output | Drives read data only; tristated otherwise; shares pin with SI in single-wire mode per Note 2 |
| WP | Write protect input | Hardware lock for status register when WPEN=1; must tie to VDD if unused to prevent spurious writes |
| 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 core logic and ferroelectric array; decoupling capacitor mandatory per layout guidelines |
| DNU | Do-not-use terminal | No internal connection; leave floating or tie to VDD - not a test pad or thermal pad |
Key Features
| Feature | Design Value |
|---|---|
| Instant nonvolatile write | Zero write latency: data committed immediately after SPI byte transfer - no polling, no timeout handling required in firmware |
| Dedicated 256-byte special sector | Retains calibration data or security keys across ≥3 reflow cycles, enabling pre-programmed module integration |
| Inrush current control | 1.5 mA typical peak limits surge on shared power rails during cold start, easing LDO sizing in multi-device systems |
| Multi-layer write protection | Combines hardware (WP pin) and software (WRDI + block protection bits) to prevent accidental or malicious corruption of critical sectors |
| Unique device ID & serial number | Enables board-level traceability and secure boot binding via factory-programmed 64-bit ID and user-writable 8-byte serial register |
Applications
| Industrial Data Logger | Smart Meter Firmware Storage |
|---|---|
Use Scenario: Continuous timestamped acquisition of temperature, pressure, and vibration data at 100 Hz in oil-field monitoring equipment. IC Role / Device Role / Timing Role: Nonvolatile scratchpad memory storing raw sensor samples before batch upload; acts as primary write buffer with deterministic latency. Use Value: 1015 endurance ensures >30 years of uninterrupted logging without wear leveling or replacement; 20 MHz SPI enables real-time capture without CPU intervention. | Use Scenario: Storing tariff tables, billing history, and cryptographic keys in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Secure, tamper-resistant configuration store; retains keys across power loss and firmware updates. Use Value: 151-year data retention eliminates field replacement; dedicated special sector preserves keys through manufacturing reflow and field upgrades. |
| Medical Diagnostic Sensor Hub | PLC I/O Module Configuration |
Use Scenario: Capturing ECG waveform segments during transient power events in portable ultrasound probes. IC Role / Device Role / Timing Role: Power-fail-safe buffer capturing last 5 seconds of analog data prior to shutdown. Use Value: Instant write capability ensures no sample loss during brownout; 0.70 µA deep power-down extends battery life between acquisitions. | Use Scenario: Storing channel calibration coefficients, input scaling factors, and diagnostic logs in DIN-rail mounted I/O modules. IC Role / Device Role / Timing Role: Field-updatable parameter store accessed during module initialization and runtime diagnostics. Use Value: Hardware WP pin prevents corruption during hot-swap; 1.8–3.6 V range matches PLC backplane rail tolerances. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial nonvolatile memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY15B104QN-20BFXIT | Same die, UFLGA package (vs. GQFN); identical electrical specs and timing | Optimized for space-constrained PCB layouts requiring 2.0 × 2.5 mm footprint | Select when board area is constrained and UFLGA assembly capability exists |
| FM25V04-G | 4 Mb F-RAM, 2.7–3.6 V only; no inrush control; 10 MHz max SPI; lacks special sector | Lower-cost alternative where 1.8 V support and reflow-hardened sector are not required | Choose for cost-sensitive industrial controls with stable 3.3 V rails and simpler qualification |
Compared with CY15B104QN-20BFXIT, this part offers identical functionality in a different package; versus FM25V04-G, it adds 1.8 V operation, inrush control, 20 MHz speed, and the reflow-survivable special sector - critical for high-reliability, multi-voltage, or pre-programmed module use cases.
Availability
CY15B104QI-20BFXIT is available at Aetrix Electronics and suitable for industrial data loggers, smart meter firmware storage, medical diagnostic sensor hubs, and PLC I/O module configuration requiring stable component supply across extended temperature and long product lifecycles.
Supply support for CY15B104QI-20BFXIT 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, connectivity, and memory solutions for automotive, industrial, and IoT markets.
This device belongs to the EXCELON™ LP F-RAM product line, engineered specifically for high-endurance, zero-latency nonvolatile storage in mission-critical industrial and medical systems where flash/EEPROM limitations cause reliability or performance bottlenecks.
FAQ
Is CY15B104QI-20BFXIT pin-compatible with standard SPI EEPROMs or flash devices?
Yes - it uses an industry-standard 8-pin SPI pinout (CS, SCK, SI, SO, WP, VSS, VDD, DNU) matching common serial NOR flash and EEPROM packages. No PCB redesign is needed for drop-in replacement, though firmware must disable polling loops due to instant-write behavior.
What is the function of the DNU pin, and can it be grounded?
The DNU (Do Not Use) pin has no internal connection and must not be grounded. Per Infineon's datasheet, it should either remain floating or be tied to VDD to avoid unintended leakage paths or ESD susceptibility - grounding violates recommended layout practice.
Does the 256-byte special sector require separate addressing or commands?
Yes - it uses dedicated opcodes (0x77 for read, 0x76 for write) and occupies address range 0x7F000–0x7F0FF. Access requires explicit instruction issuance; it is not mapped into main array space and cannot be read/written via standard READ/WRITE commands.
How does inrush current control benefit system design?
The 1.5 mA (typ) inrush current - significantly lower than comparable F-RAMs - reduces peak demand on shared power rails during cold start, allowing smaller input capacitors and avoiding LDO dropout or reset glitches in multi-rail embedded systems.
CY15B104QI-20BFXIT 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:
- 4Mbit
- Memory Organization:
- 512K 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UFLGA (3.28x3.23)
CY15B104QI-20BFXIT FAQ
1.How can I place an order for CY15B104QI-20BFXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY15B104QI-20BFXIT 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 CY15B104QI-20BFXIT reliable?
The price and inventory of CY15B104QI-20BFXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY15B104QI-20BFXIT is usually 5 days.
3.What payment methods are accepted for CY15B104QI-20BFXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY15B104QI-20BFXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY15B104QI-20BFXIT?
CY15B104QI-20BFXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY15B104QI-20BFXIT 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 CY15B104QI-20BFXIT?
For technical support, including CY15B104QI-20BFXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY15B104QI-20BFXIT requirements.
6.How does Aetrix verify that CY15B104QI-20BFXIT is sourced from the original manufacturer or authorized distributors?
All CY15B104QI-20BFXIT 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 CY15B104QI-20BFXIT meets industry standards.
7.What is the process for return or replacement of CY15B104QI-20BFXIT?
All CY15B104QI-20BFXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY15B104QI-20BFXIT, 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 CY15B104QI-20BFXIT part is unused and in its original packaging.
Return procedure for CY15B104QI-20BFXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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