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Infineon Technologies CY14ME064J2A-SXI
- Part No.:
- CY14ME064J2A-SXI
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY14ME064J2A-SXI.pdf
- Description:
- IC NVSRAM 64KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,034
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Product details
Overview
CY14ME064J2A-SXI from Cypress Semiconductor is a 64-Kbit (8K × 8) serial I²C nonvolatile SRAM with QuantumTrap technology, operating at 4.5–5.5 V. It supports AutoStore on power-down, Software STORE/RECALL via I²C, and delivers 3.4 MHz high-speed interface performance. Used in industrial control systems for real-time data retention during unexpected power loss.
For engineers reviewing the CY14ME064J2A-SXI datasheet, CY14ME064J2A-SXI pinout, CY14ME064J2A-SXI application, or CY14ME064J2A-SXI equivalent, key selection criteria include I²C speed mode support (up to 3.4 MHz), VCAP-backed AutoStore reliability, WP pin hardware write protection, and 8-pin SOIC compatibility with legacy 5V microcontroller buses.
Technical Context
This nvSRAM integrates volatile SRAM and nonvolatile QuantumTrap storage in each cell, enabling seamless STORE (SRAM → nonvolatile) and RECALL (nonvolatile → SRAM) operations. It uses standard 7-bit I²C addressing with A2/A1 slave address pins and supports Fast-mode Plus (1 MHz) and High Speed mode (3.4 MHz).
The device implements zero-cycle-delay reads/writes, automatic power-loss detection via VCAP, and configurable software/hardware write protection. Its internal power control logic manages STORE initiation without external supervision when VCAP is connected, distinguishing it from J1A variants lacking AutoStore.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 64 Kbit (8K × 8), directly addressable byte array for firmware state logging |
| I²C speed modes | 100 kHz / 400 kHz / 1 MHz / 3.4 MHz - supports mixed-speed bus designs without clock stretching |
| Operating voltage | 4.5 V to 5.5 V - compatible with legacy 5V industrial microcontrollers and PLCs |
| Data retention | 20 years at 85 °C - ensures long-term logging integrity in unattended equipment |
| STORE endurance | 1 million cycles to QuantumTrap - enables frequent power-cycle logging in energy-metering applications |
| Standby current | 120 µA - reduces system-level quiescent power in always-on monitoring nodes |
| Sleep current | 8 µA - enables ultra-low-power wake-on-event operation with external interrupt coordination |
Pinout & Package
8-pin Small Outline Integrated Circuit (SOIC) package with gull-wing leads, RoHS-compliant, industrial temperature grade (–40 °C to +85 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Primary 4.5–5.5 V rail; powers SRAM core, I²C interface, and control logic |
| VSS | Ground reference | Common return path for all digital and analog circuitry; must be low-impedance |
| SDA | I²C bidirectional data line | Open-drain output requiring external pull-up; handles command/data transfer and ACK/NACK signaling |
| SCL | I²C clock input | Master-generated clock up to 3.4 MHz; synchronizes all read/write/store/recall transactions |
| WP | Hardware write protect input | Active-high signal disabling all writes; internally pulled LOW - can be left floating if unused |
| A2, A1 | I²C slave address inputs | Set 7-bit slave address bits A2–A1 (A0 omitted in J2A); enable up to 4 devices on same bus |
| VCAP | AutoStore capacitor connection | Connects external capacitor to sustain STORE during VCC collapse; never connect to ground |
Key Features
| Feature | Design Value |
|---|---|
| QuantumTrap nonvolatile storage | Embedded per-cell nonvolatile element enabling infinite SRAM read/write cycles plus 1M STORE cycles |
| AutoStore with VCAP | Automatic STORE triggered by VCC drop below threshold - no firmware intervention required |
| Software STORE/RECALL | I²C-command-initiated data transfer between SRAM and nonvolatile elements for deterministic timing control |
| Configurable write protection | Hardware (WP pin) + software (block lock) protection covering 1/4, 1/2, or full memory array |
| 8-byte serial number | Factory-programmed unique identifier accessible via I²C - supports device traceability and calibration data binding |
Applications
| Industrial Data Logger | Energy Meter Firmware State |
|---|---|
Use Scenario: Continuous recording of sensor readings and event timestamps in factory-floor PLCs with intermittent power. IC Role / Device Role / Timing Role: Nonvolatile scratchpad memory holding last valid state before brownout. Use Value: Eliminates need for external EEPROM + SRAM combo; guarantees atomic STORE on VCC collapse via VCAP. |
Use Scenario: Preserving meter calibration constants and accumulated kWh counters across mains outages. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage for critical billing parameters with hardware write lock. Use Value: Prevents accidental overwrites via WP pin while allowing field updates via authenticated I²C commands. |
| Medical Diagnostic Device | Network Router Configuration Backup |
Use Scenario: Storing patient session data and diagnostic settings during battery-switchover in portable ultrasound units. IC Role / Device Role / Timing Role: Low-latency, high-reliability buffer bridging power domains during source transition. Use Value: 8 µA sleep current extends battery life; 20-year data retention meets medical device regulatory shelf-life requirements. |
Use Scenario: Maintaining routing tables and security keys during firmware upgrades or AC power interruptions. IC Role / Device Role / Timing Role: Fail-safe configuration vault synchronized with boot ROM initialization sequence. Use Value: RECALL on power-up ensures zero-downtime recovery; 3.4 MHz I²C enables fast config reload vs. SPI flash. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nonvolatile SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| FM24V06-G | 64 Kbit F-RAM, 2.7–5.5 V, no VCAP required, unlimited STORE cycles | Lacks AutoStore trigger; relies on host-controlled STORE command only | Select for highest endurance where power-loss predictability allows host-managed STORE |
| AT24C512B-MAU-Y | 512 Kbit I²C EEPROM, 1.7–5.5 V, 100 k write cycles, 100-year retention | No SRAM interface; byte-write latency ~5 ms; no zero-cycle reads | Select for cost-sensitive, low-bandwidth logging where write frequency is low and latency acceptable |
Compared with FM24V06-G and AT24C512B-MAU-Y, CY14ME064J2A-SXI uniquely combines SRAM-speed access, deterministic AutoStore on power failure, and 5V-native operation - making it optimal for real-time industrial control where data coherency during brownout is non-negotiable.
Availability
CY14ME064J2A-SXI is available at Aetrix Electronics and suitable for industrial data loggers, energy meter firmware state backup, and medical diagnostic device session storage requiring stable component supply and long-term lifecycle support.
Supply support for CY14ME064J2A-SXI 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
Cypress Semiconductor (now part of Infineon Technologies) designs high-reliability memory and programmable solutions for industrial, automotive, and IoT applications.
CY14ME064J2A-SXI belongs to the nvSRAM product line engineered specifically for deterministic, low-latency nonvolatile data retention in 5V industrial systems where power integrity cannot be guaranteed.
FAQ
What is the function of the VCAP pin?
The VCAP pin connects an external capacitor that supplies hold-up power during VCC collapse, enabling automatic STORE of SRAM contents to QuantumTrap nonvolatile elements. It must never be tied to ground or left floating without disabling AutoStore; typical values range from 4.7 µF to 47 µF depending on expected power-loss duration and system load.
How does AutoStore differ between CY14ME064J1A and CY14ME064J2A?
CY14ME064J2A supports AutoStore - automatic STORE triggered by VCC drop - while CY14ME064J1A lacks this feature and requires Software STORE only. This distinction is hardware-defined and cannot be enabled via firmware or configuration register.
Can the WP pin be used for both hardware and software write protection simultaneously?
Yes. The WP pin provides global hardware-level write disable (active-high), while software block protection allows selective locking of 1/4, 1/2, or full memory array via I²C commands. Both protections are enforced concurrently - if WP is asserted, software locks become irrelevant.
Is CY14ME064J2A-SXI compatible with standard I²C bus timing specifications?
Yes. It complies with standard I²C timing for Standard (100 kHz), Fast (400 kHz), Fast-mode Plus (1 MHz), and High Speed (3.4 MHz) modes. SDA setup/hold times, pulse widths, and rise/fall characteristics meet I²C specification limits across all supported speeds, including proper open-drain behavior and ACK generation.
CY14ME064J2A-SXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- NVSRAM
- Technology:
- NVSRAM (Non-Volatile SRAM)
- Memory Size:
- 64Kbit
- Memory Organization:
- 8K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 3.4 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
CY14ME064J2A-SXI FAQ
1.How can I place an order for CY14ME064J2A-SXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY14ME064J2A-SXI 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 CY14ME064J2A-SXI reliable?
The price and inventory of CY14ME064J2A-SXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY14ME064J2A-SXI is usually 5 days.
3.What payment methods are accepted for CY14ME064J2A-SXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY14ME064J2A-SXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY14ME064J2A-SXI?
CY14ME064J2A-SXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY14ME064J2A-SXI 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 CY14ME064J2A-SXI?
For technical support, including CY14ME064J2A-SXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY14ME064J2A-SXI requirements.
6.How does Aetrix verify that CY14ME064J2A-SXI is sourced from the original manufacturer or authorized distributors?
All CY14ME064J2A-SXI 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 CY14ME064J2A-SXI meets industry standards.
7.What is the process for return or replacement of CY14ME064J2A-SXI?
All CY14ME064J2A-SXI units undergo pre-shipment inspection (PSI). If there is an issue with CY14ME064J2A-SXI, 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 CY14ME064J2A-SXI part is unused and in its original packaging.
Return procedure for CY14ME064J2A-SXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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