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Infineon Technologies CY15B104QI-20BFXI
- Part No.:
- CY15B104QI-20BFXI
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-UFLGA
- Datasheet:
-
CY15B104QI-20BFXI.pdf
- Description:
- IC FRAM 4MBIT SPI 8UFLGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,802
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Product details
Overview
CY15B104QI-20BFXI 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 read/write endurance, and 151-year data retention-used for high-frequency logging in industrial PLCs and smart meters where flash/EEPROM wear-out or write latency is unacceptable.
For engineers reviewing the CY15B104QI-20BFXI datasheet, CY15B104QI-20BFXI pinout, CY15B104QI-20BFXI application, or CY15B104QI-20BFXI equivalent, key selection criteria include SPI mode 0/3 compatibility, hardware/software write protection, deep power-down current (0.1 µA), inrush current control, and dedicated 256-byte reflow-survivable special sector for calibration data storage.
Technical Context
The CY15B104QI-20BFXI implements an SPI slave interface with zero-latency nonvolatile writes-no polling required-and supports full-array, quarter-array, and half-array software block protection via status register configuration. Its ferroelectric memory array eliminates erase cycles and enables byte-level random writes at bus speed.
It integrates a nonvolatile status register, manufacturer/product ID, unique device ID, and 8-byte writable serial number registers. The dedicated 256-byte special sector retains data across up to three standard reflow soldering cycles, enabling factory-programmed calibration constants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory density | 4 Mbit (512K × 8), enabling compact firmware/data logging without external address latches |
| SPI clock frequency | Up to 20 MHz, supporting 2.5 MB/s sustained write throughput with no wait states |
| Data retention | 151 years at +85°C, eliminating periodic refresh or backup power requirements |
| Endurance | 10¹⁵ read/write cycles, supporting >1000× more frequent writes than EEPROM in sensor node applications |
| Supply voltage | 1.8 V to 3.6 V, compatible with 1.8 V, 2.5 V, 3.3 V logic domains without level shifters |
| Deep power-down current | 0.1 µA typical, enabling multi-year battery operation in always-on IoT edge nodes |
| Inrush current control | 1.5 mA typical at power-up, preventing system rail collapse during cold start in multi-device 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, industrial temperature grade (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip select input | Active-low enable; places device in standby (2.3 µA) when HIGH; required falling edge before each opcode |
| SCK | Serial clock input | Synchronizes all I/O; rising edge latches SI, falling edge drives SO; supports 0–20 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 on falling SCK edge; tristated during non-read operations |
| WP | Write protect input | Hardware lock for status register when WPEN = 1; must tie to VDD if unused |
| VSS | Ground | System reference ground; mandatory connection for stable operation and EMI control |
| VDD | Power supply | 1.8–3.6 V core supply; powers internal charge pump and F-RAM array |
| DNU | Do-not-use terminal | No internal connection; leave floating or tie to VDD-no routing or PCB pad required |
Key Features
| Feature | Design Value |
|---|---|
| Instant nonvolatile write | Zero write latency: data committed immediately after SPI transfer-no polling or timeout handling needed in firmware |
| Dedicated reflow-survivable sector | 256-byte special F-RAM sector retains factory calibration data through ≤3 lead-free reflow cycles (260°C peak) |
| Multi-layer write protection | Combines hardware (WP pin), software disable (WRDI), and configurable block protection (1/4, 1/2, full array) |
| Unique device identification | Factory-programmed 64-bit unique ID + 8-byte user-writable serial number for board/system traceability |
| Ultra-low deep power-down | 0.1 µA typical current enables >10-year coin-cell operation in maintenance-free remote sensors |
Applications
| Industrial Data Logger | Smart Energy Meter |
|---|---|
Use Scenario: Continuous timestamped sensor sampling (e.g., temperature, pressure) at 100 Hz in harsh environments with no battery backup. IC Role / Device Role / Timing Role: Nonvolatile scratchpad memory storing raw samples until batch upload; replaces EEPROM due to write endurance limits. Use Value: Enables 10¹⁵ write cycles-supporting >30 years of continuous logging at 100 Hz without wear-out failure. | Use Scenario: Storing tariff tables, billing history, and tamper-event logs in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Secure, fast-write NV memory interfacing directly to metrology SoC via SPI; survives meter power interruptions. Use Value: Eliminates 5–50 ms flash write delays, ensuring no energy pulse is missed during brownout conditions. |
| Medical Diagnostic Device | Automotive Telematics Control Unit |
Use Scenario: Capturing real-time ECG waveform segments during patient monitoring, with immediate save-on-event trigger. IC Role / Device Role / Timing Role: Low-power, high-reliability buffer memory holding waveform snapshots prior to SD card transfer or cloud upload. Use Value: 151-year data retention ensures waveform integrity across device lifetime without refresh circuitry. | Use Scenario: Logging CAN bus diagnostic trouble codes (DTCs), GPS position history, and firmware update staging in ADAS ECUs. IC Role / Device Role / Timing Role: SPI-connected nonvolatile memory co-located with MCU; stores critical event logs independent of main flash. Use Value: Inrush current control (1.5 mA) prevents voltage droop that could reset CAN transceivers during ECU power-up. |
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-20BFXI | Same die, 8-pin GQFN package (NRND); identical electrical specs but different thermal resistance and mounting footprint | Not suitable for new designs per Infineon NRND notice; legacy board reuse only | Select only for direct replacement on existing GQFN-based PCBs; UFLGA offers better thermal performance and finer pitch |
| FM25V04-G | Cypress (now Infineon) 4-Mbit F-RAM; same SPI interface, 20 MHz, but 2.0–3.6 V supply and no dedicated reflow-survivable sector | Lacks 256-byte special sector-cannot store factory-calibrated parameters surviving reflow | Choose when reflow survivability is unnecessary and 2.0 V minimum supply aligns with system rails |
Compared with CY15B104QN-20BFXI and FM25V04-G, the CY15B104QI-20BFXI uniquely combines UFLGA packaging, inrush current control, and a reflow-hardened special sector-making it optimal for new industrial designs requiring long-term reliability and factory programming flexibility.
Availability
CY15B104QI-20BFXI is available at Aetrix Electronics and suitable for industrial data loggers, smart energy meters, and medical diagnostic devices requiring stable component supply, guaranteed long-term availability, and RoHS-compliant sourcing.
Supply support for CY15B104QI-20BFXI 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 IATF 16949.
The EXCELON™ LP F-RAM product line targets mission-critical nonvolatile data logging in industrial automation, energy infrastructure, and medical electronics-designed to replace serial flash and EEPROM where write speed, endurance, and power efficiency are decisive.
FAQ
Is CY15B104QI-20BFXI pin-compatible with standard SPI EEPROMs or flash devices?
No-it shares the 8-pin SPI pinout (CS, SCK, SI, SO, WP, VSS, VDD, DNU) but differs electrically: it requires no write-enable polling, supports faster 20 MHz operation, and has hardware write protection via WP pin. Firmware must be updated to remove polling loops and handle status register configuration for block protection.
What does "inrush current control" mean for this F-RAM, and why does it matter?
Inrush current control limits peak current draw to 1.5 mA during power-up, preventing voltage droop on shared supply rails. This avoids unintended resets of adjacent microcontrollers or CAN transceivers in dense PCB layouts-critical in automotive telematics and industrial control modules where multiple ICs power up simultaneously.
Can the 256-byte special sector be used for user data, or is it reserved exclusively for calibration?
The 256-byte special sector is fully user-accessible via standard SPI commands (RDSFR, WRSFR) and intended for factory-programmed calibration constants, serial numbers, or security keys. Its reflow survivability is a physical property of the F-RAM cell design-not firmware-reserved-so it functions identically to main array memory except for thermal robustness.
Does CY15B104QI-20BFXI support Quad SPI or Dual SPI modes?
No-it supports only standard single-data-rate SPI in Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1). It does not implement dual or quad I/O instructions, nor does it support QSPI command sets. All data transfers occur on SI (input) and SO (output) pins separately, as defined in the Infineon datasheet Rev. *O.
CY15B104QI-20BFXI 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:
- 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-20BFXI FAQ
1.How can I place an order for CY15B104QI-20BFXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY15B104QI-20BFXI 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-20BFXI reliable?
The price and inventory of CY15B104QI-20BFXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY15B104QI-20BFXI is usually 5 days.
3.What payment methods are accepted for CY15B104QI-20BFXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY15B104QI-20BFXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY15B104QI-20BFXI?
CY15B104QI-20BFXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY15B104QI-20BFXI 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-20BFXI?
For technical support, including CY15B104QI-20BFXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY15B104QI-20BFXI requirements.
6.How does Aetrix verify that CY15B104QI-20BFXI is sourced from the original manufacturer or authorized distributors?
All CY15B104QI-20BFXI 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-20BFXI meets industry standards.
7.What is the process for return or replacement of CY15B104QI-20BFXI?
All CY15B104QI-20BFXI units undergo pre-shipment inspection (PSI). If there is an issue with CY15B104QI-20BFXI, 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-20BFXI part is unused and in its original packaging.
Return procedure for CY15B104QI-20BFXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY15B104QI-20BFXI Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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