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Infineon Technologies CY14E101Q1A-SXIT
- Part No.:
- CY14E101Q1A-SXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY14E101Q1A-SXIT.pdf
- Description:
- IC NVSRAM 1MBIT SPI 40MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,334
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Product details
Overview
CY14E101Q1A-SXIT from Infineon Technologies (formerly Cypress) is a 1-Mbit serial SPI nvSRAM organized as 128K × 8, featuring QuantumTrap nonvolatile storage, 40 MHz/104 MHz SPI interface, and hardware/software STORE/RECALL operations. It operates at 4.5–5.5 V, supports industrial temperature range (–40 °C to +85 °C), and uses an 8-pin SOIC package - ideal for power-loss-critical data logging in industrial controllers.
For engineers reviewing the CY14E101Q1A-SXIT datasheet, CY14E101Q1A-SXIT pinout, CY14E101Q1A-SXIT application, or CY14E101Q1A-SXIT equivalent, key selection criteria include AutoStore capability (absent in Q1A variant), VCC voltage compliance (4.5–5.5 V), SPI mode 0/3 support, WP pin-based hardware write protection, and HSB pin omission in 8-pin configuration.
Technical Context
The CY14E101Q1A-SXIT implements a hybrid memory architecture integrating volatile SRAM with embedded QuantumTrap nonvolatile elements per cell, enabling infinite SRAM read/write cycles while retaining data for 20 years at 85 °C. It lacks VCAP and HSB pins, confirming no AutoStore functionality - STORE/RECALL must be initiated exclusively via SPI instructions (STORE/RECALL opcodes).
As an SPI slave device, it supports clock rates up to 40 MHz for standard READ/WRITE and 104 MHz for FAST_READ with dummy byte insertion. It uses SPI modes 0 (CPOL=0, CPHA=0) and 3 (CPOL=1, CPHA=1), includes a status register with RDY bit for operation busy indication, and provides 8-byte serial number, manufacturer/product ID, and SLEEP mode for ultra-low-power standby (8 µA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (128K × 8) - fixed linear address space, no bank switching required |
| Interface Protocol | SPI slave, modes 0 & 3 - interoperable with standard microcontroller SPI peripherals without custom timing logic |
| Max Clock Rate | 40 MHz (READ/WRITE), 104 MHz (FAST_READ) - enables sub-25 ns effective access time with burst reads |
| Operating Voltage | 4.5 V to 5.5 V - compatible with legacy 5 V industrial bus systems and TTL-level controllers |
| Data Retention | 20 years at +85 °C - validated nonvolatile retention under worst-case thermal stress, not extrapolated |
| Write Endurance | Infinite SRAM writes; 1 million STORE cycles to QuantumTrap - STORE count governs nonvolatile wear, not byte-level writes |
| Power Consumption | 3 mA active (40 MHz), 150 µA standby, 8 µA sleep - enables battery-backed operation for >1 year on coin cell |
Pinout & Package
Package: 8-pin SOIC (Small Outline Integrated Circuit), RoHS-compliant, body width 3.9 mm, lead pitch 1.27 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select input | Active-low enable; high state forces device into 150 µA standby mode - used for multi-device SPI bus arbitration |
| SCK | Serial clock input | Accepts up to 104 MHz; latches SI on rising edge, drives SO on falling edge - defines timing budget for controller firmware |
| SI | Serial data input | Receives opcodes (0x02 WRITE, 0x06 STORE, 0x07 RECALL, etc.), addresses, and data - single-wire command/data path |
| SO | Serial data output | Drives read data, status bits, serial number, and device ID - open-drain capable; requires external pull-up |
| WP | Hardware write protect input | Low = full array write lock; overrides software protection - critical for fail-safe field firmware updates |
| HOLD | Communication suspend input | Pulled low to pause ongoing SPI transfer without resetting internal state - preserves partial command execution context |
| VCC | Power supply | 4.5–5.5 V nominal; decoupling capacitor required within 10 mm of pin - powers both SRAM and QuantumTrap control logic |
| VSS | Ground reference | Return path for all I/O and core logic; must be low-impedance connection to minimize ground bounce during STORE/RECALL |
Key Features
| Feature | Design Value |
|---|---|
| QuantumTrap nonvolatile storage | Per-cell SONOS-based trapping layer enables 20-year data retention at 85 °C without refresh or ECC overhead |
| Zero-cycle-delay SPI access | All SRAM reads/writes execute at full SPI clock rate - eliminates wait states and simplifies real-time buffer management |
| Software-controlled STORE/RECALL | Atomic 16 ms STORE and 8 ms RECALL via dedicated opcodes - deterministic latency for deterministic system recovery |
| Hardware write protection (WP) | Physical pin override prevents accidental writes during power transitions or firmware faults - complements software block protection |
| 8-byte unique serial number | Factory-programmed, read-only identifier - enables device-level traceability and secure provisioning in production lines |
Applications
| Industrial Data Logger | PLC Configuration Storage |
|---|---|
Use Scenario: Continuous recording of sensor readings (temperature, pressure, flow) in unattended remote sites with intermittent power. IC Role / Device Role / Timing Role: Nonvolatile scratchpad memory holding last valid measurement set before brownout; recalled on next power-up to resume logging continuity. Use Value: Eliminates need for external EEPROM + SRAM combo, reducing BOM count and PCB area while guaranteeing atomic data persistence without firmware intervention. | Use Scenario: Storing ladder logic runtime parameters, I/O mapping, and calibration coefficients in programmable logic controllers. IC Role / Device Role / Timing Role: Configuration vault accessed only during boot or reconfiguration; STORE triggered after parameter update, RECALL on cold start. Use Value: Prevents configuration loss during unexpected AC dropout; 20-year retention ensures field-deployed units retain settings across maintenance cycles. |
| Medical Device Event Buffer | Smart Meter Firmware Parameter Table |
Use Scenario: Capturing diagnostic timestamps, error codes, and operational anomalies in Class II medical equipment with strict audit trail requirements. IC Role / Device Role / Timing Role: Secure event ring buffer where STORE executes post-event capture; RECALL reconstructs timeline after reboot. Use Value: Meets IEC 62304 data integrity requirements via deterministic STORE latency and zero-write-endurance penalty on SRAM writes. | Use Scenario: Holding tariff schedules, billing registers, and communication keys in ANSI C12.19-compliant electricity meters subject to frequent firmware updates. IC Role / Device Role / Timing Role: Parameter repository isolated from main firmware flash; WP pin physically locked during normal operation to prevent corruption. Use Value: Enables field-upgradable parameters without risking meter certification - hardware write lock enforces separation of duties between firmware and configuration domains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nvSRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY14E101Q2A-SXIT | Includes VCAP pin for AutoStore; same 8-pin SOIC, 4.5–5.5 V, no HSB pin | Supports capacitor-backed automatic STORE on power loss - eliminates firmware dependency for data safety | Select when deterministic power-loss response is required without host processor involvement |
| FM25V10-G | F-RAM-based 1 Mbit SPI memory; 3.0–3.6 V operation; no STORE/RECALL latency; unlimited endurance | Lower voltage, no power-loss STORE delay, but lacks serial number and quantum-trap retention guarantee | Select when operating at 3.3 V and zero-latency nonvolatility is prioritized over 20-year retention at 85 °C |
Compared with CY14E101Q2A-SXIT, the Q1A variant trades AutoStore capability for simplified power design (no VCAP capacitor); compared with FM25V10-G, it offers higher VCC tolerance and certified long-term retention but introduces STORE/RECALL timing constraints.
Availability
CY14E101Q1A-SXIT is available at Aetrix Electronics and suitable for industrial data loggers, PLC configuration storage, medical event buffers, and smart meter parameter tables requiring stable component supply across extended product lifecycles.
Supply support for CY14E101Q1A-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 German semiconductor leader specializing in power management, automotive ICs, and memory solutions, with global manufacturing and R&D infrastructure.
The CY14E101Q series belongs to Infineon's nvSRAM product line, designed specifically for mission-critical industrial systems where data integrity during power interruption must be guaranteed without firmware complexity or external support components.
FAQ
Does CY14E101Q1A-SXIT support AutoStore?
No. The "Q1A" suffix explicitly denotes absence of AutoStore functionality: VCAP pin is omitted, and power-down STORE does not occur automatically. STORE must be initiated via SPI instruction (0x06 opcode) before power removal. This design reduces bill-of-materials by eliminating the external storage capacitor but requires host firmware coordination for data safety.
What is the purpose of the HOLD pin?
The HOLD pin suspends ongoing SPI communication without resetting internal state - for example, pausing a multi-byte READ during interrupt servicing. When pulled low, SI/SO/SCK are tri-stated; releasing HOLD resumes transmission from the exact bit position. This avoids command retransmission and maintains transaction atomicity in real-time systems.
Can CY14E101Q1A-SXIT operate at 3.3 V?
No. Per datasheet specification, CY14E101Q1A-SXIT requires 4.5 V to 5.5 V supply voltage. Attempting operation below 4.5 V may cause unpredictable STORE/RECALL behavior, status register corruption, or failure to exit SLEEP mode. For 3.3 V systems, consider CY14B101Q variants or F-RAM alternatives like FM25V10-G.
How is write protection implemented?
Hardware write protection uses the WP pin: pulling it low disables all write, STORE, and status register modification commands. Software protection combines WRDI instruction (disables write enable latch) and status register BP0/BP1 bits to lock 1/4, 1/2, or full memory array. Both methods coexist - WP takes precedence and cannot be overridden by software.
CY14E101Q1A-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:
- 1Mbit
- Memory Organization:
- 128K 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
CY14E101Q1A-SXIT FAQ
1.How can I place an order for CY14E101Q1A-SXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY14E101Q1A-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 CY14E101Q1A-SXIT reliable?
The price and inventory of CY14E101Q1A-SXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY14E101Q1A-SXIT is usually 5 days.
3.What payment methods are accepted for CY14E101Q1A-SXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY14E101Q1A-SXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY14E101Q1A-SXIT?
CY14E101Q1A-SXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY14E101Q1A-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 CY14E101Q1A-SXIT?
For technical support, including CY14E101Q1A-SXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY14E101Q1A-SXIT requirements.
6.How does Aetrix verify that CY14E101Q1A-SXIT is sourced from the original manufacturer or authorized distributors?
All CY14E101Q1A-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 CY14E101Q1A-SXIT meets industry standards.
7.What is the process for return or replacement of CY14E101Q1A-SXIT?
All CY14E101Q1A-SXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY14E101Q1A-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 CY14E101Q1A-SXIT part is unused and in its original packaging.
Return procedure for CY14E101Q1A-SXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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