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Infineon Technologies CY14B101J2-SXIT
- Part No.:
- CY14B101J2-SXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY14B101J2-SXIT.pdf
- Description:
- IC NVSRAM 1MBIT I2C 3.4MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,118
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Product details
Overview
CY14B101J2-SXIT from Infineon Technologies (formerly Cypress) is a 1-Mbit serial I²C nonvolatile SRAM with integrated real-time clock, organized as 128 K × 8, featuring AutoStore on power-down, Power-Up RECALL, and full RTC functionality including alarm, watchdog timer, and programmable square-wave output (1 Hz to 32.768 kHz). It operates from 2.7 V to 3.6 V and supports I²C speeds up to 3.4 MHz for industrial data-logging and time-stamped event capture.
For engineers reviewing the CY14B101J2-SXIT datasheet, CY14B101J2-SXIT pinout, CY14B101J2-SXIT application, or CY14B101J2-SXIT equivalent, key selection criteria include nvSRAM STORE/RECALL latency, RTC backup current (0.45 µA typ), I²C speed mode compatibility (Standard/Fast/Fast-Plus/High-Speed), and dual backup options (capacitor or battery for RTC).
Technical Context
This device integrates QuantumTrap™ nonvolatile storage with SRAM in a single monolithic IC, enabling infinite SRAM read/write cycles and 1 million STORE endurance to nonvolatile elements. The RTC subsystem includes independent counters, interrupt-capable alarm, and calibration registers - all accessible via dedicated I²C slave address space separate from memory.
The I²C interface supports four speed modes (100 kHz, 400 kHz, 1 MHz, 3.4 MHz) with zero-cycle-delay reads/writes and hardware write protection via WP pin. STORE can be triggered automatically (VCAP-based power-loss detection), by software command, or by asserting HSB low; RECALL occurs at power-up or via I²C command.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 1 Mbit (128 K × 8) - provides byte-addressable nonvolatile storage without external EEPROM or flash. |
| I²C speed support | Up to 3.4 MHz - enables high-throughput logging in time-critical embedded systems. |
| RTC backup current | 0.45 µA (typ) - allows >1 year runtime on CR2032 coin cell or low-leakage supercapacitor. |
| STORE endurance | 1 million cycles - guarantees reliable data retention over product lifetime in frequent power-cycle environments. |
| Operating voltage | 2.7 V to 3.6 V - compatible with 3.3 V industrial logic and mixed-voltage microcontroller interfaces. |
| Data retention | 20 years at +85 °C - meets long-term archival requirements for metering and infrastructure monitoring. |
| Square wave outputs | 1 Hz / 512 Hz / 4.096 kHz / 32.768 kHz - selectable for system timing reference or low-power wake-up signaling. |
Pinout & Package
16-pin Small Outline Integrated Circuit (SOIC) package with standard 300-mil body width and 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Primary 2.7–3.6 V supply for nvSRAM and RTC logic; decoupling required near pin. |
| VSS | Ground reference | Common return path for all digital and RTC circuitry; must connect to low-impedance system ground. |
| SDA | I²C bidirectional data | Open-drain I/O requiring external pull-up; shares bus with other I²C devices; supports 3.4 MHz operation. |
| SCL | I²C clock input | Master-generated clock; determines transaction timing; requires external pull-up resistor. |
| WP | Hardware write protect | Active-low input; internally pulled down - left unconnected for default unprotected operation. |
| HSB | Hardware STORE busy | Open-drain status output during STORE; also accepts active-low trigger for manual STORE initiation. |
| VCAP | AutoStore capacitor supply | Connects to external capacitor (typically 47–100 µF tantalum) to sustain STORE during VCC dropout. |
| INT/SQW | Interrupt/square wave output | Programmable dual-function pin: generates RTC alarms or calibrated square waves (1 Hz–32.768 kHz). |
| Xin / Xout | RTC crystal oscillator interface | Connects to 32.768 kHz tuning-fork crystal; internal load capacitors eliminate need for external caps. |
| VRTCcap / VRTCbat | RTC backup supply inputs | Exclusive choice: capacitor (VRTCcap) or battery (VRTCbat); only one connected; other left floating. |
| A1 / A2 | I²C slave address bits | Set LSBs of 7-bit I²C address (base 0x50); internally pulled low - unconnected = 0. |
| NC | No-connect | Physically present but not bonded; must remain unconnected on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| AutoStore with VCAP | Enables automatic, capacitor-powered STORE on power failure - no host intervention required. |
| Power-Up RECALL | Restores last-saved data to SRAM within 15 ms of VCC stabilization - ensures deterministic boot state. |
| Dual RTC backup | Supports either low-leakage capacitor (VRTCcap) or coin-cell battery (VRTCbat) - simplifies BOM and layout. |
| I²C multi-speed compliance | Single part supports Standard (100 kHz), Fast (400 kHz), Fast-Plus (1 MHz), and High-Speed (3.4 MHz) modes - eliminates speed-specific variants. |
| Programmable INT/SQW | Configurable as interrupt source (alarm/watchdog/power fail) or precision clock output - reduces need for external timing ICs. |
Applications
| Smart Energy Metering | Industrial PLC Data Logging |
|---|---|
Use Scenario: Capturing time-stamped energy consumption bursts during grid transients or tariff changes. IC Role / Device Role / Timing Role: nvSRAM stores metering registers; RTC provides accurate timestamping and alarm-triggered event capture. Use Value: Guarantees data integrity across uncontrolled power loss while maintaining ±2 ppm time accuracy with crystal calibration. | Use Scenario: Recording sensor readings and control states during extended machine downtime or brownouts. IC Role / Device Role / Timing Role: Acts as persistent buffer and time-source for cyclic data acquisition; RECALL restores operational context at restart. Use Value: Eliminates need for external FRAM or battery-backed RAM, reducing component count and board area. |
| Medical Diagnostic Equipment | Automotive Telematics Black Box |
Use Scenario: Storing critical diagnostic logs and calibration parameters during equipment shutdown or emergency power-off. IC Role / Device Role / Timing Role: Provides tamper-resistant, timestamped storage for regulatory audit trails and fault analysis. Use Value: Meets IEC 62304 data retention requirements with 20-year archival capability at 85 °C. | Use Scenario: Recording vehicle motion, GPS position, and CAN bus events before and after collision detection. IC Role / Device Role / Timing Role: Serves as crash-qualified nonvolatile buffer synchronized to precise RTC timestamps. Use Value: Enables sub-second event correlation using 1 Hz or 512 Hz square-wave reference for external MCU timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nvSRAM+RTC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STK14CA8-3LF35I | Parallel-interface nvSRAM (no RTC); 1 Mbit; 3.3 V; requires external RTC and glue logic. | Lacks integrated RTC, alarm, and square-wave output - increases design complexity and footprint. | Select when legacy parallel bus architecture exists and RTC is already implemented elsewhere. |
| DS1307+FM24CL16 | Discrete RTC (DS1307) + 64-Kbit I²C F-RAM (FM24CL16); separate chips, shared I²C bus. | Higher total standby current (≈1.2 µA vs. 0.45 µA); no AutoStore; F-RAM lacks true nonvolatility on power loss. | Choose if existing design uses DS1307 and requires incremental memory expansion without re-spin. |
Compared with STK14CA8-3LF35I and DS1307+FM24CL16, CY14B101J2-SXIT delivers tighter integration, lower RTC backup current, guaranteed STORE on power loss, and unified I²C address space - reducing BOM count, PCB area, and firmware overhead.
Availability
CY14B101J2-SXIT is available at Aetrix Electronics and suitable for smart metering, industrial data loggers, medical diagnostics, and automotive black-box recorders requiring stable component supply, long-term data retention, and precise timestamping under variable power conditions.
Supply support for CY14B101J2-SXIT 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, delivering power systems, sensors, and memory solutions for industrial, automotive, and IoT applications.
CY14B101J2-SXIT belongs to Infineon's legacy Cypress nvSRAM product line, designed specifically for systems needing deterministic, capacitor-backed nonvolatile storage combined with high-accuracy RTC functionality in a single I²C device.
FAQ
What is the maximum I²C clock frequency supported by CY14B101J2-SXIT?
The device supports I²C High-Speed mode up to 3.4 MHz, in addition to Standard (100 kHz), Fast (400 kHz), and Fast-Plus (1 MHz) modes. All modes use the same physical interface and slave address, with timing parameters adjusted per mode per the datasheet AC specifications.
How does AutoStore function without an external capacitor?
AutoStore requires VCAP connection to a minimum 47 µF low-ESR capacitor. If VCAP is left unconnected, AutoStore is disabled - STORE operations must then be initiated manually via I²C command or HSB pin assertion, with no power-loss protection.
Can the RTC operate independently when VCC is absent?
Yes - when VRTCcap or VRTCbat is connected and VCC is removed, the RTC continues running from the backup source with typical current draw of 0.45 µA. Timekeeping, alarm, and square-wave functions remain fully operational during main power outage.
Is the 8-byte serial number user-programmable?
The 8-byte serial number is factory-programmed and permanently locked; it cannot be rewritten. However, the device supports a one-time lock operation via I²C command to prevent accidental overwrite - once locked, the serial number becomes read-only for life.
CY14B101J2-SXIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- I2C
- Clock Frequency:
- 3.4 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:
- 8-SOIC
CY14B101J2-SXIT FAQ
1.How can I place an order for CY14B101J2-SXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY14B101J2-SXIT 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 CY14B101J2-SXIT reliable?
The price and inventory of CY14B101J2-SXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY14B101J2-SXIT is usually 5 days.
3.What payment methods are accepted for CY14B101J2-SXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY14B101J2-SXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY14B101J2-SXIT?
CY14B101J2-SXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY14B101J2-SXIT 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 CY14B101J2-SXIT?
For technical support, including CY14B101J2-SXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY14B101J2-SXIT requirements.
6.How does Aetrix verify that CY14B101J2-SXIT is sourced from the original manufacturer or authorized distributors?
All CY14B101J2-SXIT 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 CY14B101J2-SXIT meets industry standards.
7.What is the process for return or replacement of CY14B101J2-SXIT?
All CY14B101J2-SXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY14B101J2-SXIT, 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 CY14B101J2-SXIT part is unused and in its original packaging.
Return procedure for CY14B101J2-SXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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