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Cypress Semiconductor Corp CY14B101Q3-SFXI
- Part No.:
- CY14B101Q3-SFXI
- Manufacturer:
- Cypress Semiconductor Corp
- Category:
- Memory
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CY14B101Q3-SFXI.pdf
- Description:
- IC NVSRAM 1MBIT SPI 40MHZ 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:688
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Product details
Overview
CY14B101Q3-SFXI from Infineon Technologies (formerly Cypress) is a 1-Mbit serial SPI nonvolatile SRAM (nvSRAM), internally organized as 128K × 8, featuring QuantumTrap nonvolatile storage, AutoStore on power-down, Hardware STORE via HSB pin, and 40 MHz SPI interface. It operates from 2.7–3.6 V, supports SPI modes 0 and 3, and delivers zero-cycle-delay reads/writes for real-time data logging in industrial controllers.
For engineers reviewing the CY14B101Q3-SFXI datasheet, CY14B101Q3-SFXI pinout, CY14B101Q3-SFXI application, or CY14B101Q3-SFXI equivalent, key selection criteria include hardware STORE capability, VCAP-backed AutoStore timing, SPI block protection granularity (1/4, 1/2, full array), and industrial-temperature operation with 20-year data retention.
Technical Context
This nvSRAM integrates SRAM and QuantumTrap SONOS-based nonvolatile elements per cell, enabling infinite SRAM read/write cycles while supporting 1 million STORE cycles to nonvolatile storage. STORE operations are triggered by power loss (AutoStore), SPI instruction (Software STORE), or external HSB assertion (Hardware STORE); RECALL restores data on power-up or via SPI command.
The device implements dual-layer write protection: hardware-level via WP pin and software-level via WRSR register with BP0/BP1 bits for 1/4-, 1/2-, or full-array lock. Its SPI slave interface supports HOLD suspension and status monitoring via RDY bit and active-low HSB pin, ensuring deterministic timing control in deterministic embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 1 Mbit (128K × 8) - provides byte-addressable nonvolatile storage matching legacy parallel SRAM footprints in SPI-constrained designs. |
| SPI clock rate | 40 MHz - enables 5 MB/s peak throughput with zero-cycle-delay reads/writes, eliminating wait states in high-speed data capture. |
| Data retention | 20 years - guarantees long-term data integrity without battery backup or refresh, critical for unattended industrial recorders. |
| STORE endurance | 1 million cycles - defines maximum guaranteed nonvolatile write events; SRAM layer allows infinite volatile writes without wear. |
| Operating voltage | 2.7 V to 3.6 V - compatible with standard 3.3 V logic rails and tolerant of brown-out conditions during VCAP-assisted AutoStore. |
| Temperature range | –40 °C to +85 °C - qualified for industrial environments including PLCs, motor drives, and energy metering hardware. |
| Power-up RECALL | Automatic - ensures valid SRAM content at boot without host firmware intervention, simplifying system initialization sequence. |
Pinout & Package
Package: 16-pin SOIC (Small Outline Integrated Circuit), RoHS-compliant, industrial temperature grade.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select input | Active-low enable; places device in standby when high, reducing current to <1 µA - essential for low-power sleep modes. |
| SCK | Serial clock input | Accepts up to 40 MHz clock; latches SI on rising edge, drives SO on falling edge - defines deterministic SPI timing budget. |
| SI | Serial data input | Receives opcodes (READ/WRITE/STORE/RECALL), addresses, and data - single-wire command/data path simplifies PCB routing. |
| SO | Serial data output | Drives read data and status bits (e.g., RDY) - open-drain capable; requires external pull-up for multi-drop bus sharing. |
| HSB | Hardware STORE Busy I/O | Output: asserts low during STORE/RECALL; Input: triggers Hardware STORE when pulled low - enables hardware-triggered nonvolatile save without SPI overhead. |
| VCAP | AutoStore capacitor supply | Connects to external 4.7 µF tantalum capacitor; powers STORE during VCC collapse - eliminates need for external power-fail detection circuitry. |
| WP | Write Protect input | Hardware lock: disables all STORE/RECALL and write instructions when asserted - provides fail-safe protection against accidental corruption. |
| HOLD | Communication suspend input | Pauses ongoing SPI transfer without resetting state machine - preserves address pointer and instruction context during host interrupt servicing. |
Key Features
| Feature | Design Value |
|---|---|
| QuantumTrap nonvolatile cell | SONOS-based per-cell storage enabling infinite SRAM writes + 1M STORE cycles - eliminates EEPROM-style wear leveling complexity. |
| Hardware STORE via HSB | Dedicated pin allows immediate nonvolatile save on external event (e.g., emergency stop signal) - bypasses SPI latency for deterministic safety-critical saves. |
| AutoStore with VCAP | Capacitor-backed power-loss detection initiates STORE without host involvement - ensures data persistence during unexpected AC dropout or battery depletion. |
| Block write protection | Configurable 1/4, 1/2, or full-array lock via status register - isolates firmware code, calibration tables, and user data in separate protected zones. |
| SPI mode 0 & 3 support | Compatible with dominant MCU SPI peripherals (e.g., STM32, NXP Kinetis) without clock polarity inversion logic - reduces porting effort. |
Applications
| Industrial Data Logger | Programmable Logic Controller (PLC) |
|---|---|
Use Scenario: Continuous acquisition of sensor readings (temperature, pressure, flow) with periodic nonvolatile save upon trigger or power loss. IC Role / Device Role / Timing Role: Primary nonvolatile buffer storing last known good state and recent history; performs AutoStore during mains failure and Hardware STORE on alarm condition. Use Value: Eliminates external battery or supercapacitor backup; retains >128 KB of timestamped process data for forensic analysis after unexpected shutdown. | Use Scenario: Storing ladder logic runtime variables, I/O configuration, and fault history in modular automation controllers. IC Role / Device Role / Timing Role: Volatile SRAM workspace with atomic nonvolatile commit via HSB-driven STORE on program download or configuration change. Use Value: Ensures deterministic restart after power cycle with identical operational state; avoids re-initialization delays and configuration drift. |
| Smart Energy Meter | Medical Diagnostic Equipment |
Use Scenario: Recording kWh consumption, tamper events, and utility communication logs across extended outages. IC Role / Device Role / Timing Role: Secure nonvolatile scratchpad holding billing-critical data; uses WP pin to prevent unauthorized firmware or tariff table modification. Use Value: Meets IEC 62056-21 data integrity requirements; maintains 20-year retention without maintenance, satisfying regulatory audit trails. | Use Scenario: Capturing real-time ECG waveforms or imaging calibration parameters during diagnostic procedures. IC Role / Device Role / Timing Role: High-speed SPI buffer enabling gapless waveform streaming; triggers Hardware STORE on button press or abnormal signal detection. Use Value: Guarantees preservation of clinically relevant data even if AC power fails mid-procedure - supports FDA 21 CFR Part 11 electronic record compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nvSRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| FM25V01A-G | F-RAM-based; unlimited endurance; no STORE/RECALL latency; 3.3 V only; no AutoStore capacitor support. | Lacks VCAP-backed power-loss protection; requires host-controlled save on power-fail detection. | Select for ultra-high-write-cycle applications where deterministic latency matters more than autonomous power-loss recovery. |
| AT25SF041-SSHD-B | Quad SPI NOR Flash; 4 Mbit; sector erase required before write; 100k program/erase cycles; no SRAM-like random access. | No true SRAM interface; requires page programming and erase management; incompatible with zero-cycle-delay access. | Select only if cost-per-bit is primary constraint and firmware can accommodate flash wear leveling and erase latency. |
Compared with FM25V01A-G and AT25SF041-SSHD-B, CY14B101Q3-SFXI uniquely combines SRAM-speed access, autonomous AutoStore, and hardware-triggered STORE - making it optimal for systems requiring both real-time performance and guaranteed power-loss resilience without host intervention.
Availability
CY14B101Q3-SFXI is available at Aetrix Electronics and suitable for industrial data loggers, programmable logic controllers, and smart energy meters requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for CY14B101Q3-SFXI 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 global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive MCUs, and memory solutions with emphasis on reliability and industrial-grade qualification.
CY14B101Q3-SFXI belongs to Infineon's nvSRAM product line, designed specifically for mission-critical industrial and infrastructure applications where data integrity during power disruption is non-negotiable.
FAQ
What is the function of the VCAP pin, and what capacitor value is required?
The VCAP pin supplies hold-up power to complete AutoStore during VCC collapse. A 4.7 µF tantalum capacitor (±20%) rated ≥6.3 V must be placed between VCAP and VSS, as specified in the datasheet. This capacitor sustains internal circuitry for ~20 ms, enabling full 128K × 8 STORE completion. Connecting VCAP to VSS or leaving it floating will disable AutoStore and may cause data loss on power-down.
How does Hardware STORE differ from Software STORE in terms of timing and use case?
Hardware STORE is initiated by pulling HSB low externally and completes in ≤15 ms (typical), independent of SPI bus activity - ideal for emergency save on hardware interrupts. Software STORE uses SPI opcode 0x01 and requires active SPI communication; latency depends on bus speed and host scheduling. Both perform identical QuantumTrap programming but differ in trigger mechanism and determinism.
Can the CY14B101Q3-SFXI replace a standard SPI EEPROM in an existing design?
Yes, but with key interface differences: it uses identical SPI opcodes for READ/WRITE but adds STORE/RECALL commands and requires HSB/VCAP/WP connections not present in EEPROMs. Its zero-cycle-delay access eliminates EEPROM's write latency, improving real-time responsiveness. However, pin count (16-pin SOIC vs. common 8-pin EEPROM) and VCAP decoupling must be accommodated in layout.
Is the CY14B101Q3-SFXI pin-compatible with the CY14B101Q1 or CY14B101Q2 variants?
No. CY14B101Q3 uses a 16-pin SOIC package with dedicated HSB and VCAP pins, whereas CY14B101Q1 is 8-pin DFN without HSB/VCAP, and CY14B101Q2 lacks WP. Pin mapping differs significantly: Q3 includes HSB (Pin 13), VCAP (Pin 8), and WP (Pin 7), while Q1 omits both HSB and VCAP, and Q2 omits WP. Direct replacement requires PCB redesign.
CY14B101Q3-SFXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Cypress Semiconductor Corp
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- NVSRAM
- Technology:
- NVSRAM (Non-Volatile SRAM)
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 40 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
CY14B101Q3-SFXI FAQ
1.How can I place an order for CY14B101Q3-SFXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY14B101Q3-SFXI 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 CY14B101Q3-SFXI reliable?
The price and inventory of CY14B101Q3-SFXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY14B101Q3-SFXI is usually 5 days.
3.What payment methods are accepted for CY14B101Q3-SFXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY14B101Q3-SFXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY14B101Q3-SFXI?
CY14B101Q3-SFXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY14B101Q3-SFXI 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 CY14B101Q3-SFXI?
For technical support, including CY14B101Q3-SFXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY14B101Q3-SFXI requirements.
6.How does Aetrix verify that CY14B101Q3-SFXI is sourced from the original manufacturer or authorized distributors?
All CY14B101Q3-SFXI 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 CY14B101Q3-SFXI meets industry standards.
7.What is the process for return or replacement of CY14B101Q3-SFXI?
All CY14B101Q3-SFXI units undergo pre-shipment inspection (PSI). If there is an issue with CY14B101Q3-SFXI, 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 CY14B101Q3-SFXI part is unused and in its original packaging.
Return procedure for CY14B101Q3-SFXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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