My Inquiry
My Account
Infineon Technologies CY15B104QN-20BFXI
- Part No.:
- CY15B104QN-20BFXI
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-UFLGA
- Datasheet:
-
CY15B104QN-20BFXI.pdf
- Description:
- IC FRAM 4MBIT SPI 8UFLGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,355
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY15B104QN-20BFXI from Infineon is a 4-Mb serial ferroelectric RAM (F-RAM) organized as 512K × 8, operating over SPI at up to 50 MHz with 1.8 V–3.6 V supply, 10¹⁵ write endurance, and 151-year data retention. It serves as a nonvolatile memory replacement for EEPROM/flash in high-write-cycle industrial logging and real-time control systems.
For engineers reviewing the CY15B104QN-20BFXI datasheet, CY15B104QN-20BFXI pinout, CY15B104QN-20BFXI application, or CY15B104QN-20BFXI equivalent, key selection criteria include SPI mode 0/3 compatibility, hardware/software write protection, dedicated 256-byte special sector, deep power-down current (0.70 µA), and industrial temperature range (–40°C to +85°C).
Technical Context
The CY15B104QN-20BFXI implements an SPI slave interface with zero-latency writes-no polling required-and supports both Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1). Its internal architecture includes a 512K × 8 main F-RAM array plus a separate 256-byte special sector that survives three reflow cycles.
Write protection is enforced via dual-layer control: hardware-level WP pin assertion (active-low) and software-configurable status register bits (WPEN, BP0–BP2), enabling selective block protection of 1/4, 1/2, or full array. Device identification uses fixed 16-bit Device ID and programmable 8-byte serial number registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory density | 4 Mb (512K × 8), directly addressable byte-wise via 19-bit SPI address field |
| SPI clock frequency | Up to 50 MHz - enables sub-μs per-byte write latency without wait states |
| Data retention | 151 years at +85°C - validated nonvolatile storage without refresh or wear leveling |
| Endurance | 10¹⁵ read/write cycles - eliminates lifetime write-cycle budgeting in data loggers |
| Supply voltage | 1.8 V to 3.6 V - interoperable with 1.8 V, 2.5 V, and 3.3 V logic domains |
| Deep power-down current | 0.70 µA (typ) - enables multi-year battery operation in remote sensor nodes |
| Operating temperature | –40°C to +85°C - qualified for industrial control, automotive body electronics, and metering |
Pinout & Package
Package: 8-pin SOIC (Small Outline Integrated Circuit), RoHS-compliant, surface-mount, standard footprint compatible with JEDEC MS-012.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select input | Active-low enable: drives device into standby 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 0–50 MHz with interruptible clock |
| SI | Serial data input | Accepts opcodes, addresses, and write data; sampled on SCK rising edge; must be driven to valid logic level |
| SO | Serial data output | Drives read data and status bits on SCK falling edge; tristated when not selected or during write |
| WP | Write protect input | Hardware lock: prevents status register writes when WPEN = 1 and WP = LOW; must tie to VDD if unused |
| VSS | Ground reference | System ground return path; required for stable internal bias and noise immunity |
| VDD | Power supply | Primary power rail (1.8–3.6 V); supplies core logic, F-RAM array, and I/O buffers |
| DNU | Do-not-use terminal | No internal connection; must remain floating or tied to VDD - no signal routing permitted |
Key Features
| Feature | Design Value |
|---|---|
| Instant non-volatile write | Writes complete at bus speed - no delay, no polling, no erase-before-write overhead |
| Dedicated 256-byte special sector | Retains data through ≥3 reflow cycles - ideal for storing calibration constants or board IDs |
| Multi-layer write protection | Combines hardware (WP pin) and software (status register + BP bits) to prevent accidental overwrites |
| Device and serial identification | Fixed 16-bit Device ID (manufacturer + product) + user-programmable 8-byte serial number register |
| Ultra-low deep power-down | 0.70 µA typical current draw - extends shelf life and battery runtime in always-on edge devices |
Applications
| Industrial Data Logger | Smart Meter Firmware Storage |
|---|---|
Use Scenario: Continuous timestamped sensor sampling at 100 Hz with power-loss resilience. IC Role / Device Role / Timing Role: Nonvolatile scratchpad memory for burst-write buffering and immediate power-fail commit. Use Value: 10¹⁵ write cycles eliminate wear-out concerns; zero-write-latency ensures no sample loss during brownout. | Use Scenario: Storing tariff tables, billing counters, and firmware patches in electricity/water meters. IC Role / Device Role / Timing Role: Field-upgradable configuration store with tamper-resistant write protection. Use Value: Hardware WP pin + software BP bits prevent unauthorized firmware modification; 151-year retention guarantees 20+ year metrology compliance. |
| Automotive Body Control Module | Medical Diagnostic Equipment |
Use Scenario: Recording door lock actuation history, seat position memory, and fault logs across ignition cycles. IC Role / Device Role / Timing Role: Persistent event logger interfaced directly to MCU SPI peripheral. Use Value: –40°C to +85°C operation meets AEC-Q100 ambient requirements; 1.8–3.6 V supply matches automotive LDO outputs. | Use Scenario: Capturing calibration coefficients, patient session metadata, and diagnostic snapshots in portable ultrasound units. IC Role / Device Role / Timing Role: Low-power, high-reliability parameter store with traceable serial ID per unit. Use Value: 0.70 µA deep power-down extends battery life between clinical sessions; DNU pin simplifies PCB layout in space-constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nonvolatile serial memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY15B104QN-20LPXI | Same die, 8-pin GQFN package (NRND), 0.5 mm pitch, lower profile (0.55 mm max height) | Targeted for space-constrained portable designs; not recommended for new industrial designs per Infineon NRND notice | Select only if legacy GQFN footprint reuse is mandatory and volume sourcing is confirmed |
| FM25V04-G | Cypress (now Infineon) 4-Mb F-RAM, 1.7–2.2 V supply, 40 MHz max SPI, SOIC-8 | Lower voltage range limits compatibility with 3.3 V systems; lacks special sector and serial number registers | Choose when system operates strictly at 1.8 V and does not require reflow-survivable calibration storage |
Compared with CY15B104QN-20BFXI, the -20LPXI variant trades manufacturability for miniaturization, while FM25V04-G sacrifices voltage flexibility and advanced features for legacy design continuity - neither offers identical feature parity.
Availability
CY15B104QN-20BFXI is available at Aetrix Electronics and suitable for industrial data loggers, smart meter firmware storage, and automotive body control modules requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for CY15B104QN-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 manufacturer specializing in power management, sensing, and nonvolatile memory solutions for industrial, automotive, and IoT applications.
The EXCELON™ LP F-RAM product line delivers instant-write, high-endurance nonvolatile memory targeting applications where flash/EEPROM wear-out, write latency, or power constraints limit reliability - especially in edge-sensing and mission-critical logging.
FAQ
Is CY15B104QN-20BFXI pin-compatible with standard SPI EEPROMs or flash devices?
Yes - it uses industry-standard 8-pin SOIC with identical CS/SCK/SI/SO/WP/VSS/VDD pin assignments and supports SPI Modes 0 and 3. No hardware redesign is needed for drop-in replacement, though firmware must implement F-RAM-specific commands (e.g., no WREN instruction required; WRDI used instead of WRSR for status register disable).
What is the purpose of the DNU pin, and how should it be handled on the PCB?
The DNU (Do Not Use) pin has no internal connection and must never be routed to any signal. Infineon specifies it must either remain electrically floating or be tied to VDD. Connecting it to ground, CS, or any other net may cause undefined behavior or increased leakage current per datasheet Section 2.
Does the 256-byte special sector retain data after solder reflow, and what is the maximum cycle count?
Yes - the dedicated special sector is qualified to retain data through up to three standard lead-free reflow soldering cycles (peak temperature ≤ 260°C), as verified in Infineon's qualification testing. This makes it suitable for storing factory-programmed calibration data or unique board identifiers before final assembly.
How does write protection work when both WP pin and status register bits are active?
Hardware WP takes precedence: if WP = LOW and WPEN = 1 in the status register, all status register writes (including BP bits) are blocked regardless of software command. Software protection (BP0–BP2) only applies when WP = HIGH or WPEN = 0. This hierarchical scheme prevents accidental override of critical protection settings during firmware updates.
CY15B104QN-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)
CY15B104QN-20BFXI FAQ
1.How can I place an order for CY15B104QN-20BFXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY15B104QN-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 CY15B104QN-20BFXI reliable?
The price and inventory of CY15B104QN-20BFXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY15B104QN-20BFXI is usually 5 days.
3.What payment methods are accepted for CY15B104QN-20BFXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY15B104QN-20BFXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY15B104QN-20BFXI?
CY15B104QN-20BFXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY15B104QN-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 CY15B104QN-20BFXI?
For technical support, including CY15B104QN-20BFXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY15B104QN-20BFXI requirements.
6.How does Aetrix verify that CY15B104QN-20BFXI is sourced from the original manufacturer or authorized distributors?
All CY15B104QN-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 CY15B104QN-20BFXI meets industry standards.
7.What is the process for return or replacement of CY15B104QN-20BFXI?
All CY15B104QN-20BFXI units undergo pre-shipment inspection (PSI). If there is an issue with CY15B104QN-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 CY15B104QN-20BFXI part is unused and in its original packaging.
Return procedure for CY15B104QN-20BFXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY15B104QN-20BFXI Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
