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Infineon Technologies CY14MB064J2A-SXIT
- Part No.:
- CY14MB064J2A-SXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY14MB064J2A-SXIT.pdf
- Description:
- IC NVSRAM 64KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,387
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Product details
Overview
CY14MB064J2A-SXIT from Cypress Semiconductor is a 64-Kbit (8K × 8) serial I²C nonvolatile SRAM with AutoStore capability, QuantumTrap nonvolatile storage, and industrial-grade operation from 2.7 V to 3.6 V. It performs automatic STORE on power-down using an external capacitor (VCAP), Power-Up RECALL, and supports I²C speeds up to 3.4 MHz. Used in metering, industrial PLCs, and data loggers where power-loss resilience and byte-level nonvolatility are critical.
For engineers reviewing the CY14MB064J2A-SXIT datasheet, CY14MB064J2A-SXIT pinout, CY14MB064J2A-SXIT application, or CY14MB064J2A-SXIT equivalent, key selection criteria include AutoStore enablement via VCAP, I²C slave address configuration (A2/A1 only), WP pin hardware write protection, and 20-year data retention at 85 °C - all confirmed in the official Rev. *M datasheet.
Technical Context
The CY14MB064J2A integrates SRAM and QuantumTrap nonvolatile elements per cell, enabling infinite SRAM read/write cycles and 1 million STORE cycles to nonvolatile storage. Its I²C interface supports four speed modes (100 kHz, 400 kHz, 1 MHz, 3.4 MHz) with zero-cycle-delay reads/writes and full protocol compliance including START/STOP, ACK/NACK, and repeated START handling.
Power management includes three low-power states: standby (120 µA), sleep (8 µA), and AutoStore-triggered VCAP-powered STORE during brownout. The device uses a fixed 7-bit slave address with A2 and A1 pins (no A0), and implements hardware write protection via the WP pin and software block protection for 1/4, 1/2, or full array.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 64 Kbit (8K × 8), directly addressable as 8,192 bytes with byte-level access |
| I²C speed modes | 100 kHz / 400 kHz / 1 MHz / 3.4 MHz - single device supports all modes without reconfiguration |
| Data retention | 20 years at 85 °C - guaranteed nonvolatile data hold without refresh or backup power |
| STORE endurance | 1 million cycles to QuantumTrap - defines maximum power-loss events before wear-out |
| Operating voltage | 2.7 V to 3.6 V - compatible with 3.3 V systems; excludes 5 V operation (CY14ME variant required) |
| Temperature range | –40 °C to +85 °C - qualified for industrial environments without derating |
| Standby current | 120 µA typical - enables low-power monitoring between data writes in battery-backed systems |
Pinout & Package
Package: 8-pin SOIC (Small Outline Integrated Circuit), RoHS-compliant, standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | 2.7–3.6 V main supply; powers SRAM core and I²C logic; must be stable prior to RECALL |
| VSS | Ground reference | System ground return path; required for proper I²C signal referencing and VCAP discharge control |
| SDA | I²C bidirectional data line | Open-drain output; requires external pull-up; carries address, command, and data bytes with ACK/NACK |
| SCL | I²C clock input | Master-generated clock up to 3.4 MHz; synchronizes all data transfers and timing-critical STORE/RECALL commands |
| WP | Hardware write protect input | Active-low; when HIGH, blocks all STORE, write, and configuration operations - prevents accidental corruption |
| A2, A1 | Slave address inputs | Set 7-bit I²C slave address bits; internally pulled LOW; A0 omitted in J2A version (only two address pins) |
| VCAP | AutoStore energy storage terminal | Connects external capacitor (typ. 4.7 µF); supplies energy to complete STORE during VCC collapse - mandatory for AutoStore |
Key Features
| Feature | Design Value |
|---|---|
| AutoStore with VCAP | Guarantees automatic STORE on power loss without firmware intervention - eliminates need for external supervisor or battery |
| Software STORE/RECALL | Enables deterministic nonvolatile updates via I²C command - supports scheduled save points and firmware-controlled recovery |
| 8-byte serial number | Factory-programmed unique identifier accessible over I²C - enables device traceability and secure provisioning in field-deployed units |
| Block write protection | Configurable 1/4, 1/2, or full-array lock via I²C register - isolates critical configuration data from runtime overwrite |
| 3.4 MHz I²C interface | Reduces write latency by >3× vs. standard 400 kHz mode - critical for high-frequency logging in real-time control loops |
Applications
| Smart Electricity Metering | Industrial Programmable Logic Controller (PLC) |
|---|---|
|
Use Scenario: Storing tariff schedules, consumption registers, and event logs across frequent mains interruptions. IC Role / Device Role / Timing Role: Nonvolatile scratchpad memory that retains last valid state during brownouts and restores on power-up. Use Value: Eliminates supercapacitor or battery backup while guaranteeing 20-year data integrity at 85 °C ambient. |
Use Scenario: Preserving ladder logic state, I/O mapping, and diagnostic history during controller resets or power cycling. IC Role / Device Role / Timing Role: Fault-tolerant configuration memory interfaced directly to the PLC's microcontroller I²C bus. Use Value: Enables sub-millisecond RECALL after cold start - faster than EEPROM-based alternatives and immune to write fatigue. |
| Medical Data Logger | Automotive Telematics Control Unit (TCU) |
|
Use Scenario: Capturing sensor timestamps, calibration offsets, and alarm triggers in portable diagnostic devices. IC Role / Device Role / Timing Role: High-reliability buffer between ADC subsystem and host MCU, surviving battery swaps and USB disconnects. Use Value: Supports 1 million STORE cycles - sufficient for >10 years of daily patient sessions without degradation. |
Use Scenario: Storing GPS fix history, CAN message counters, and firmware update metadata across vehicle ignition cycles. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory for mission-critical vehicle state variables tied to VCAP-backed power rail. Use Value: Meets ISO 16750-2 transient immunity requirements via AutoStore - no data loss during load-dump or cranking dips. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nvSRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| FM24V06-G | 64 Kbit I²C F-RAM; no VCAP required; unlimited STORE endurance; 2.7–3.6 V; same SOIC-8 package | Eliminates capacitor and STORE timing uncertainty; lower standby current (10 µA); no AutoStore latency | Select for ultra-high reliability in high-write-frequency systems where capacitor aging or board space is constrained |
| AT24C512B-MAHM-T | 512 Kbit I²C EEPROM; 1.7–5.5 V; no AutoStore; 100 k write cycles; 100-year retention at 25 °C (not 85 °C) | Higher density but slower writes; requires explicit firmware STORE calls; no power-loss automation | Select only if cost-per-bit is primary and power-loss resilience is handled externally via MCU supervision |
Compared with CY14MB064J2A-SXIT, FM24V06-G offers superior endurance and simpler power design but lacks factory-programmed serial numbers; AT24C512B demands full firmware control of nonvolatility and degrades under thermal stress - making CY14MB064J2A the optimal balance of autonomy, industrial qualification, and traceability.
Availability
CY14MB064J2A-SXIT is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, and medical data loggers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for CY14MB064J2A-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
Cypress Semiconductor (now part of Infineon Technologies) designs high-reliability memory and programmable solutions for industrial, automotive, and IoT applications, with global manufacturing and quality certification to ISO 9001 and IATF 16949.
CY14MB series nvSRAMs were engineered specifically for power-loss-critical embedded systems needing deterministic, capacitor-backed nonvolatility - bridging the gap between volatile SRAM speed and EEPROM endurance limitations.
FAQ
What is the function of the VCAP pin, and what capacitor value is recommended?
The VCAP pin supplies energy to complete the AutoStore operation during VCC collapse. A 4.7 µF tantalum or ceramic capacitor is recommended, rated ≥6.3 V, placed within 5 mm of the pin with low-inductance layout. Without VCAP, AutoStore is disabled and only Software STORE is available - risking data loss during uncontrolled power failure.
How does the CY14MB064J2A differ from the CY14MB064J1A variant?
CY14MB064J2A supports AutoStore (enabled by VCAP), while CY14MB064J1A does not. J2A omits the A0 pin (only A2/A1 used for slave addressing), whereas J1A includes A0. Both share identical memory size, I²C interface, and operating voltage range - but J2A is the only variant qualified for autonomous power-loss recovery.
Can the WP pin be left unconnected, and what happens when it is asserted?
Yes - the WP pin has an internal pull-down and may be left floating. When driven HIGH, it disables all STORE operations (AutoStore and Software STORE), write commands to memory or control registers, and block protection changes. Reads, RECALL, and serial number access remain functional - enabling safe read-only operation during field diagnostics.
Is the CY14MB064J2A-SXIT still recommended for new designs?
No - Cypress officially marks CY14MB064J1A/J2A as "Not Recommended for New Designs" (NRND) per datasheet Rev. *M. However, Aetrix Electronics maintains active inventory and supply continuity support for legacy industrial programs, with full traceability and extended lifecycle coordination through Infineon's product change notification process.
CY14MB064J2A-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:
- 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:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
CY14MB064J2A-SXIT FAQ
1.How can I place an order for CY14MB064J2A-SXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY14MB064J2A-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 CY14MB064J2A-SXIT reliable?
The price and inventory of CY14MB064J2A-SXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY14MB064J2A-SXIT is usually 5 days.
3.What payment methods are accepted for CY14MB064J2A-SXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY14MB064J2A-SXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY14MB064J2A-SXIT?
CY14MB064J2A-SXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY14MB064J2A-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 CY14MB064J2A-SXIT?
For technical support, including CY14MB064J2A-SXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY14MB064J2A-SXIT requirements.
6.How does Aetrix verify that CY14MB064J2A-SXIT is sourced from the original manufacturer or authorized distributors?
All CY14MB064J2A-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 CY14MB064J2A-SXIT meets industry standards.
7.What is the process for return or replacement of CY14MB064J2A-SXIT?
All CY14MB064J2A-SXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY14MB064J2A-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 CY14MB064J2A-SXIT part is unused and in its original packaging.
Return procedure for CY14MB064J2A-SXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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