My Inquiry
My Account
Infineon Technologies CY15B104QN-50SXI
- Part No.:
- CY15B104QN-50SXI
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
CY15B104QN-50SXI.pdf
- Description:
- IC FRAM 4MBIT SPI 50MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:474
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY15B104QN-50SXI 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 real-time data logging systems requiring instant writes without polling.
For engineers reviewing the CY15B104QN-50SXI datasheet, CY15B104QN-50SXI pinout, CY15B104QN-50SXI application, or CY15B104QN-50SXI equivalent, this device delivers deterministic zero-latency writes, industrial temperature support (–40°C to +85°C), hardware/software write protection, and a dedicated 256-byte reflow-survivable special sector - critical for firmware versioning and calibration storage.
Technical Context
The CY15B104QN-50SXI implements an SPI slave interface compliant with modes 0 and 3, supporting full-duplex communication with SI/SO pins synchronized to SCK edges (input sampled on rising, output driven on falling). Its internal architecture integrates a 512K × 8 F-RAM array, nonvolatile status register, Device ID/Unique ID registers, and a separate 256-byte special sector.
Write operations execute at bus speed with no delay or polling required; each byte written is immediately committed to nonvolatile memory. The device uses ferroelectric dielectric technology enabling 10¹⁵ read/write cycles and eliminating wear leveling, erase cycles, and page programming overhead inherent in flash and EEPROM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mb (512K × 8 bits) - supports 512 KB of byte-addressable nonvolatile storage with single-byte write capability |
| SPI Clock Frequency | Up to 50 MHz - enables 5 MB/s sustained write throughput without wait states or command overhead |
| Endurance | 10¹⁵ read/write cycles - eliminates lifetime concerns in high-frequency logging (e.g., 1000 writes/sec for >31 years) |
| Data Retention | 151 years at +85°C - ensures long-term integrity without refresh or backup power |
| Supply Voltage | 1.8 V to 3.6 V - compatible with modern low-voltage microcontrollers and battery-powered systems |
| Operating Temperature | –40°C to +85°C - qualified for industrial control, automotive body electronics, and outdoor IoT edge nodes |
| Deep Power-Down Current | 0.70 µA (typ) - enables multi-year operation on coin-cell batteries in maintenance-free sensor nodes |
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 signal; places device in standby (tri-state I/O, <2.3 µA) when HIGH; must fall before each opcode |
| SCK | Serial Clock Input | Synchronizes all SPI transfers; inputs latched on rising edge, outputs driven on falling edge; supports 0–50 MHz with interruptible clock |
| SI | Serial Data Input | Receives opcodes, addresses, and write data; must be held valid during active CS to meet IDD specs |
| SO | Serial Data Output | Drives read data and status bits during read cycles; tri-stated otherwise; shares bus with SI in single-wire mode |
| WP | Write Protect Input | Hardware lock for status register writes when WPEN=1; must tie to VDD if unused to prevent accidental protection |
| VSS | Ground | Device reference ground; requires low-impedance connection to system GND plane |
| VDD | Power Supply | Core logic and memory supply; decoupling capacitor (0.1 µF) required within 5 mm of pin |
| DNU | Do Not Use | No internal connection; may float or tie to VDD; not electrically bonded in SOIC package |
Key Features
| Feature | Design Value |
|---|---|
| Instant Non-Volatile Write | Zero latency commit: data written to nonvolatile memory immediately after SPI byte transfer completes - no polling, no timeout handling |
| Dedicated Special Sector | 256-byte isolated F-RAM block retains data through ≥3 standard lead-free reflow cycles - ideal for storing board-specific calibration or firmware revision IDs |
| Multi-Layer Write Protection | Combines hardware (WP pin), software (WRDI instruction), and configurable block protection (1/4, 1/2, or full array) - prevents accidental overwrite in field-deployed systems |
| Device Identification | Read-only 16-bit Device ID (manufacturer + product code) plus unique 64-bit ID and user-writable 8-byte serial number - enables secure traceability and anti-counterfeiting |
| Low-Power Modes | Four-tier power management: active (2.4 mA @40 MHz), standby (2.3 µA), deep power-down (0.70 µA), hibernate (0.1 µA) - extends battery life in intermittent-sensing applications |
Applications
| Industrial Data Logger | Smart Metering |
|---|---|
Use Scenario: Continuous timestamped sensor sampling (e.g., temperature, pressure) at 100 Hz in remote utility infrastructure. IC Role / Device Role / Timing Role: Nonvolatile scratchpad memory capturing raw measurements with guaranteed atomic write persistence across power loss. Use Value: Eliminates risk of data corruption during brownouts; supports 10¹⁵ writes - sufficient for 31+ years of continuous 100-Hz logging. | Use Scenario: Storing tariff schedules, consumption history, and tamper-event logs in electricity/water/gas meters. IC Role / Device Role / Timing Role: Secure, long-life parameter and event storage interfaced directly to metrology SoC via SPI. Use Value: 151-year data retention ensures compliance with utility regulatory archiving requirements without periodic refresh or backup capacitors. |
| Automotive Body Control Module | Medical Diagnostic Equipment |
Use Scenario: Recording door lock actuation counts, seat position memory, and lighting configuration in BCMs operating across –40°C to +85°C. IC Role / Device Role / Timing Role: Industrial-grade nonvolatile configuration store replacing EEPROM, accessed during boot and runtime by MCU. Use Value: Hardware WP pin prevents firmware update corruption; DNU pin simplifies PCB layout in space-constrained automotive modules. | Use Scenario: Capturing diagnostic waveforms, calibration coefficients, and patient session metadata in portable ultrasound or ECG devices. IC Role / Device Role / Timing Role: High-reliability, low-power memory for time-critical waveform buffering and post-acquisition parameter storage. Use Value: 0.1 µA hibernate current enables multi-week battery life in handheld diagnostics; special sector stores factory calibration immune to rework. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial nonvolatile memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY15B104QSN-50SXI | Same die, identical electrical specs, but in 8-pin UFLGA package (0.5 mm pitch, 4.0 × 3.0 mm) - smaller footprint, higher thermal resistance | Preferred for ultra-compact portable medical or wearable designs where PCB area is constrained | Select when board space is premium and reflow profile supports fine-pitch land grid array |
| FM25V04-G | Cypress (now Infineon) 4-Mb F-RAM; same 512K × 8 organization, 50 MHz SPI, but VDD = 2.0–3.6 V and no special sector or serial number registers | Lacks dedicated reflow-survivable sector and unique ID - unsuitable for traceable calibration or secure device identity | Choose only if legacy compatibility or cost sensitivity outweighs need for enhanced identification and rework resilience |
Compared with CY15B104QSN-50SXI, the SOIC variant offers easier inspection and rework; versus FM25V04-G, it adds critical features for secure, rework-tolerant embedded systems - making it optimal for new industrial and medical designs requiring long-term reliability and traceability.
Availability
CY15B104QN-50SXI is available at Aetrix Electronics and suitable for industrial data loggers, smart metering systems, and automotive body control modules requiring stable component supply, extended temperature operation, and guaranteed nonvolatile write integrity.
Supply support for CY15B104QN-50SXI 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, security, and memory solutions for industrial, automotive, and IoT markets.
The EXCELON™ LP F-RAM product line targets high-reliability, low-power nonvolatile memory applications where traditional EEPROM and flash fail due to endurance limits, write latency, or power-loss vulnerability.
FAQ
Is CY15B104QN-50SXI pin-compatible with standard SPI EEPROMs like AT25DF041?
No. While both use 8-pin SOIC and SPI interface, CY15B104QN-50SXI has a DNU pin (pin 2) and different pin mapping: SI (1), DNU (2), SCK (3), SO (4), CS (5), WP (6), VSS (7), VDD (8). Standard EEPROMs place HOLD or RESET on pin 7, requiring PCB redesign for drop-in replacement.
Does the 256-byte special sector survive reflow soldering more than three times?
The datasheet specifies survival through "up to three standard reflow soldering cycles" - meaning it is characterized and guaranteed for exactly three JEDEC J-STD-020-compliant lead-free reflows. Beyond three cycles, retention is not tested or warranted; design should avoid additional reflows to this sector.
Can the Unique ID be overwritten or reset by the user?
No. The 64-bit Unique ID is factory-programmed and permanently stored in nonvolatile memory. It is read-only via the RDUID instruction (0x4B) and cannot be altered, erased, or regenerated by any command or voltage condition - ensuring permanent device traceability.
What happens if the WP pin is left floating during operation?
Leaving WP floating violates the datasheet requirement. Since WP is active-low and internally pulled up only weakly (if at all), a floating state risks unintended write protection activation. The datasheet mandates tying WP to VDD when unused - failure to do so may cause sporadic status register lockout and field failures.
CY15B104QN-50SXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- Excelon™-Auto, F-RAM™
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FRAM
- Technology:
- FRAM (Ferroelectric RAM)
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 50 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- -
- Voltage - Supply:
- 1.8V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
CY15B104QN-50SXI FAQ
1.How can I place an order for CY15B104QN-50SXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY15B104QN-50SXI 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-50SXI reliable?
The price and inventory of CY15B104QN-50SXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY15B104QN-50SXI is usually 5 days.
3.What payment methods are accepted for CY15B104QN-50SXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY15B104QN-50SXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY15B104QN-50SXI?
CY15B104QN-50SXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY15B104QN-50SXI 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-50SXI?
For technical support, including CY15B104QN-50SXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY15B104QN-50SXI requirements.
6.How does Aetrix verify that CY15B104QN-50SXI is sourced from the original manufacturer or authorized distributors?
All CY15B104QN-50SXI 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-50SXI meets industry standards.
7.What is the process for return or replacement of CY15B104QN-50SXI?
All CY15B104QN-50SXI units undergo pre-shipment inspection (PSI). If there is an issue with CY15B104QN-50SXI, 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-50SXI part is unused and in its original packaging.
Return procedure for CY15B104QN-50SXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY15B104QN-50SXI 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
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.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
