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Infineon Technologies CY14ME064Q2B-SXIT
- Part No.:
- CY14ME064Q2B-SXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY14ME064Q2B-SXIT.pdf
- Description:
- IC NVSRAM 64KBIT SPI 40MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,005
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Product details
Overview
CY14ME064Q2B-SXIT from Infineon Technologies (formerly Cypress) is a 64-Kbit (8K × 8) SPI nonvolatile SRAM with integrated QuantumTrap nonvolatile storage, designed for mission-critical data retention in industrial control and power-loss-prone systems. It supports AutoStore on power-down via external VCAP capacitor, Power-Up RECALL, 40-MHz zero-cycle-delay SPI interface, hardware write protection (WP pin), and industrial temperature operation (–40°C to +85°C).
For engineers reviewing the CY14ME064Q2B-SXIT datasheet, CY14ME064Q2B-SXIT pinout, CY14ME064Q2B-SXIT application, or CY14ME064Q2B-SXIT equivalent, key selection criteria include VCC range (4.5–5.5 V), AutoStore capability with VCAP support, SPI mode 0/3 compatibility, 20-year data retention at 85°C, and hardware/software write protection granularity.
Technical Context
The CY14ME064Q2B-SXIT integrates an 8K × 8 SRAM array with per-cell QuantumTrap nonvolatile elements based on SONOS technology, enabling infinite SRAM read/write cycles while guaranteeing 1 million STORE cycles and 20-year data retention at 85°C. Its SPI slave interface operates up to 40 MHz with zero cycle delay for READ/WRITE, and supports both AutoStore (triggered by VCC drop below VSWITCH) and Software STORE/RECALL via dedicated opcodes.
Power management includes three low-power states: active (3 mA avg @ 40 MHz), standby (120 µA), and sleep (8 µA), with hardware write protection via WP pin and software block protection (1/4, 1/2, or full array) controlled through BP0/BP1 bits in the Status Register. The device uses SPI modes 0 (CPOL=0, CPHA=0) and 3 (CPOL=1, CPHA=1) and features HOLD pin for serial operation suspension without reset.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 64 Kbit (8K × 8) - provides byte-addressable nonvolatile storage matching legacy parallel SRAM footprints in SPI-constrained designs. |
| VCC Range | 4.5 V to 5.5 V - compatible with standard 5-V industrial logic rails and eliminates level-shifting in legacy 5-V systems. |
| SPI Clock Rate | Up to 40 MHz - enables high-throughput configuration/data logging without wait states due to zero-cycle-delay read/write. |
| Data Retention | 20 years at +85°C - ensures long-term firmware parameter or calibration storage in unattended equipment without battery backup. |
| STORE Endurance | 1 million cycles - supports frequent power-cycle logging in energy metering or PLC I/O modules with guaranteed nonvolatile write lifetime. |
| AutoStore Support | Yes, with external VCAP capacitor - delivers deterministic, capacitor-backed data save on brownout, eliminating need for external supervisor ICs or batteries. |
| Operating Temperature | –40°C to +85°C - qualified for deployment in industrial automation enclosures, motor drives, and outdoor infrastructure. |
Pinout & Package
Package: 8-pin Small Outline Integrated Circuit (SOIC), RoHS-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select input | Active-low enable; places device in standby (120 µA) when high, required for SPI command initiation. |
| SCK | Serial clock input | Accepts up to 40-MHz clock; latches SI on rising edge, drives SO on falling edge per SPI mode 0/3 timing. |
| SI | Serial input | Receives all opcodes (READ, WRITE, STORE, RECALL, WRSR, etc.) and address/data bytes. |
| SO | Serial output | Drives read data, status register contents, serial number, and device ID; tri-stated when CS high. |
| WP | Hardware write protect input | Low-active pin that locks entire memory array against accidental writes; overrides software protection when asserted. |
| HOLD | Serial suspend input | Pauses ongoing SPI transfer without resetting internal state; allows host to service higher-priority interrupts mid-transaction. |
| VCAP | AutoStore capacitor supply | Connects to external capacitor (typically 4.7–10 µF); supplies energy during VCC collapse to complete STORE before power loss. |
| VSS | Ground reference | System ground return path; must be low-impedance connection to minimize noise coupling into nvSRAM core. |
Key Features
| Feature | Design Value |
|---|---|
| QuantumTrap nonvolatile storage | Per-cell SONOS-based nonvolatility enables infinite SRAM writes while preserving 1M STORE cycles and 20-year retention at 85°C. |
| AutoStore with VCAP | Eliminates external power-fail detection circuitry; capacitor-backed STORE activates automatically when VCC drops below VSWITCH (~3.0 V). |
| Zero-cycle-delay SPI | 40-MHz reads/writes execute without wait states-critical for real-time logging in motion control and sensor fusion applications. |
| Multi-level write protection | Combines hardware (WP pin), software disable (WRDI), and configurable block protection (BP0/BP1) to prevent unintended firmware or calibration overwrites. |
| Industrial-grade reliability | Qualified across –40°C to +85°C with full functionality; no derating required for extended temperature operation in harsh environments. |
Applications
| Industrial PLC Data Logging | Smart Energy Meter Firmware Storage |
|---|---|
Use Scenario: Capturing process variable history and alarm timestamps during mains power interruption in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile scratchpad memory holding last-known state and event logs; AutoStore triggered by VCC sag ensures no data loss during brownouts. Use Value: Replaces battery-backed SRAM with maintenance-free, RoHS-compliant solution meeting IEC 61131-2 requirements for deterministic data retention. | Use Scenario: Storing tariff tables, billing counters, and cryptographic keys in DIN-rail mounted electricity meters subject to frequent grid instability. IC Role / Device Role / Timing Role: Secure, tamper-resistant configuration store; Power-Up RECALL restores operational parameters within 10 ms of power restoration. Use Value: Meets ANSI C12.1 and IEC 62056 standards for 20-year data integrity without lithium battery replacement or leakage risk. |
| Motor Drive Parameter Backup | Railway Signaling Event Recorder |
Use Scenario: Preserving tuning coefficients, fault history, and encoder offsets in servo drives exposed to voltage sags during regenerative braking. IC Role / Device Role / Timing Role: High-speed nvSRAM buffer interfaced directly to MCU SPI; Software STORE invoked after each parameter update to ensure consistency. Use Value: Enables sub-100 µs STORE latency and eliminates EEPROM wear-out concerns in high-update-rate commissioning workflows. | Use Scenario: Recording train position, signal aspect changes, and brake application events in EN 5012x-certified signaling interlock systems. IC Role / Device Role / Timing Role: Deterministic nonvolatile memory with guaranteed STORE completion under EN 50121-3-2 conducted immunity stress conditions. Use Value: Provides auditable, timestamped event logs compliant with CENELEC SIL-2 requirements without external supervision circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nvSRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY14ME064Q1B-SXIT | No VCAP pin; lacks AutoStore capability - requires software-initiated STORE only. | Suitable where power-fail events are infrequent or managed externally via MCU GPIO monitoring. | Select when system already implements power-fail detection and avoids capacitor footprint/charging overhead. |
| FM25V05-G | F-RAM-based (not nvSRAM); 512-Kbit density; 3.3-V only; no AutoStore; unlimited endurance. | Better for high-write-frequency buffers but lacks deterministic power-loss STORE and 5-V compatibility. | Choose for write-intensive data buffers where 5-V operation and capacitor-backed STORE are not required. |
Compared with CY14ME064Q1B-SXIT, this part adds VCAP-backed AutoStore for hands-off power-loss recovery; compared with FM25V05-G, it offers 5-V operation and guaranteed STORE on brownout-but trades F-RAM's unlimited endurance for 1M STORE cycles.
Availability
CY14ME064Q2B-SXIT is available at Aetrix Electronics and suitable for industrial PLC data logging, smart energy meter firmware storage, and motor drive parameter backup requiring stable component supply across extended product lifecycles.
Supply support for CY14ME064Q2B-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, specializing in power management, automotive MCUs, and reliable memory solutions for industrial and mission-critical applications.
This device belongs to Infineon's nvSRAM product line, engineered specifically for deterministic, capacitor-backed data retention in 5-V industrial systems where battery-free, high-reliability nonvolatility is mandatory.
FAQ
What is the minimum VCAP capacitance required for reliable AutoStore operation?
The CY14ME064Q2B-SXIT requires a minimum 4.7 µF tantalum or ceramic capacitor on the VCAP pin to ensure successful STORE during a 10-ms VCC dropout at 5.5 V. Larger values (up to 10 µF) improve margin under worst-case temperature and voltage conditions. The capacitor must be low-ESR (< 1 Ω) and rated for ≥10 V DC.
Does the device support SPI mode 1 or mode 2?
No - the CY14ME064Q2B-SXIT supports only SPI modes 0 (CPOL = 0, CPHA = 0) and 3 (CPOL = 1, CPHA = 1). Attempting mode 1 or 2 will result in incorrect data sampling due to mismatched clock polarity and phase timing relative to the internal instruction decoder.
How is the 8-byte serial number programmed and accessed?
The 8-byte serial number is factory-programmed and read-only. It is accessed using the RDSN instruction (0x05) after issuing WREN; no user programming is supported. Each byte is returned sequentially on SO starting from index 0, and the value remains fixed across STORE/RECALL cycles and power cycles.
Can the WP pin be left unconnected if hardware write protection is not used?
No - the WP pin must be actively driven HIGH (to VCC) when not in use. Leaving it floating may cause indeterminate write protection behavior due to internal pull-down weakness. A 10-kΩ pull-up resistor to VCC is recommended for robust noise immunity in electrically noisy industrial environments.
CY14ME064Q2B-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:
- SPI
- Clock Frequency:
- 40 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
CY14ME064Q2B-SXIT FAQ
1.How can I place an order for CY14ME064Q2B-SXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY14ME064Q2B-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 CY14ME064Q2B-SXIT reliable?
The price and inventory of CY14ME064Q2B-SXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY14ME064Q2B-SXIT is usually 5 days.
3.What payment methods are accepted for CY14ME064Q2B-SXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY14ME064Q2B-SXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY14ME064Q2B-SXIT?
CY14ME064Q2B-SXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY14ME064Q2B-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 CY14ME064Q2B-SXIT?
For technical support, including CY14ME064Q2B-SXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY14ME064Q2B-SXIT requirements.
6.How does Aetrix verify that CY14ME064Q2B-SXIT is sourced from the original manufacturer or authorized distributors?
All CY14ME064Q2B-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 CY14ME064Q2B-SXIT meets industry standards.
7.What is the process for return or replacement of CY14ME064Q2B-SXIT?
All CY14ME064Q2B-SXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY14ME064Q2B-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 CY14ME064Q2B-SXIT part is unused and in its original packaging.
Return procedure for CY14ME064Q2B-SXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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