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Infineon Technologies CY14B108K-ZS25XI
- Part No.:
- CY14B108K-ZS25XI
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
CY14B108K-ZS25XI.pdf
- Description:
- IC NVSRAM 8MBIT PAR 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:180
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Product details
Overview
CY14B108K-ZS25XI from Cypress Semiconductor is an 8-Mbit nonvolatile SRAM (nvSRAM) with integrated real-time clock (RTC), organized as 1024 K × 8, featuring 25 ns access time, QuantumTrap nonvolatile storage, and industrial temperature operation (–40°C to +85°C). It supports AutoStore on power-down using a VCAP capacitor, software/hardware STORE/RECALL, and includes watchdog timer, programmable clock alarm, and RTC backup via VRTCcap or VRTCbat - deployed in industrial data loggers requiring persistent timestamped memory.
For engineers reviewing the CY14B108K-ZS25XI datasheet, CY14B108K-ZS25XI pinout, CY14B108K-ZS25XI application, or CY14B108K-ZS25XI equivalent, key selection considerations include ×8 vs ×16 configuration mapping, VCAP sizing for reliable AutoStore, RTC interrupt routing via INT pin, and HSB-driven hardware STORE timing coordination with system power sequencing.
Technical Context
The device integrates a standard SRAM array with parallel-connected QuantumTrap nonvolatile elements, enabling infinite SRAM read/write cycles and up to 1 million STORE cycles. STORE and RECALL operations execute atomically across all cells, blocking SRAM access during transfer.
RTC functionality includes leap-year-corrected calendar, 32.768 kHz crystal oscillator (Xin/Xout), programmable alarm (minutes/hours/days/months), and watchdog timer with interrupt output on INT pin. Backup power may be supplied via capacitor (VRCap) or battery (VRTCbat), with automatic switchover.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (1024 K × 8 organization) |
| Access Time | 25 ns - determines minimum SRAM read cycle duration in high-speed microcontroller interfaces |
| Data Retention | 20 years at +85°C - guarantees timestamp and configuration persistence without refresh |
| STORE Endurance | 1 million cycles - defines maximum expected nonvolatile write events over product lifetime |
| Supply Voltage | 3.0 V ±10% - requires stable 2.7–3.6 V rail; no 5 V tolerance |
| Operating Temperature | –40°C to +85°C - validated for industrial control and automotive under-hood data logging |
| RTC Accuracy | ±2 ppm typical with 32.768 kHz crystal - enables sub-second timekeeping drift per month |
Pinout & Package
Package: 44-pin Thin Small Outline Package (TSOP II), RoHS-compliant, industrial-grade.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address Input | Selects one of 1,048,576 bytes in ×8 mode; A19 used only in ×8 configuration |
| DQ0–DQ7 | Bidirectional Data I/O | 8-bit parallel data path; tristated when OE HIGH or during STORE/RECALL |
| VCAP | AutoStore Capacitor Supply | Connects external capacitor (12 µF typical) to sustain STORE during VCC dropout |
| HSB | Hardware STORE Busy / Control | Open-drain output indicates STORE progress; driven LOW externally to initiate hardware STORE |
| INT | Programmable Interrupt Output | Asserts on RTC alarm, watchdog timeout, or power monitor event; configurable active-HIGH or open-drain |
| VRTCcap / VRTCbat | RTC Backup Power Inputs | Exclusive pair: VRTCcap for capacitor backup (no battery), VRTCbat for coin-cell battery supply |
Key Features
| Feature | Design Value |
|---|---|
| QuantumTrap Nonvolatile Storage | Enables infinite SRAM reads/writes while retaining 1M STORE cycles and 20-year data retention without wear leveling |
| AutoStore on Power-Down | Automatic STORE triggered by VCC drop below VSWITCH, using charge stored on VCAP capacitor - no firmware intervention required |
| Integrated RTC with Alarm & Watchdog | Full calendar with leap-year correction, programmable periodic interrupts, and independent watchdog timer for system recovery |
| Flexible RTC Backup Options | Supports either supercapacitor (VRTCcap) or lithium battery (VRTCbat); pins are mutually exclusive and must not be connected simultaneously |
| Hardware STORE Coordination | HSB pin provides both initiation signal and status feedback, enabling precise synchronization with host processor power management states |
Applications
| Industrial Data Logger | Smart Metering System |
|---|---|
|
Use Scenario: Continuous timestamped sensor data capture during mains power interruption. IC Role / Device Role / Timing Role: nvSRAM stores volatile measurement buffers; RTC maintains accurate UTC time during brownouts via VRTCcap. Use Value: Eliminates need for external RTC + EEPROM combo; ensures zero-time-loss clock continuity and atomic STORE of last valid readings. |
Use Scenario: Utility meter recording energy consumption with tamper-proof time-stamped billing intervals. IC Role / Device Role / Timing Role: Provides secure, battery-backed timekeeping and nonvolatile storage of tariff logs and event counters. Use Value: Meets IEC 62053-21 accuracy requirements; prevents data loss during battery replacement via AutoStore-triggered recall on power restoration. |
| PLC Controller Module | Medical Diagnostic Equipment |
|
Use Scenario: Preserving runtime configuration and fault history across unexpected power cycles in factory automation. IC Role / Device Role / Timing Role: Acts as deterministic nonvolatile scratchpad with synchronized RTC alarm for scheduled diagnostics. Use Value: Enables deterministic boot-up state recovery within <50 ms; avoids firmware-based STORE delays that risk data corruption. |
Use Scenario: Storing calibration coefficients and last-operational timestamps in portable ultrasound devices. IC Role / Device Role / Timing Role: Stores critical calibration data with traceable time-of-last-verification via RTC register snapshot. Use Value: Supports FDA 21 CFR Part 11 audit trails; guarantees timestamp integrity even if main SoC fails before shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nvSRAM+RTC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STK15C88-3LF35I | 4-Mbit (512 K × 8), 35 ns access, no integrated RTC - requires external clock IC | Lacks RTC alarm and watchdog; suitable only where timekeeping is handled separately | Choose when cost sensitivity outweighs integration benefit and RTC functions are already implemented elsewhere |
| FM24V10-G | F-RAM-based 1-Mbit (128 K × 8), 45 ns access, RTC included but no AutoStore - relies on software STORE only | No hardware-initiated STORE; limited density and no VCAP-based hands-off power-loss protection | Select for ultra-high endurance (>1014 cycles) in low-density, low-power edge nodes without strict power-fail autonomy |
Compared with STK15C88-3LF35I and FM24V10-G, CY14B108K-ZS25XI uniquely delivers monolithic 8-Mbit nvSRAM + full RTC + AutoStore, eliminating external components and guaranteeing atomic power-loss response - critical for industrial systems where time-synchronized data integrity is non-negotiable.
Availability
CY14B108K-ZS25XI is available at Aetrix Electronics and suitable for industrial data loggers, smart metering systems, PLC controller modules, and medical diagnostic equipment requiring stable component supply, long-term lifecycle support, and guaranteed RoHS compliance.
Supply support for CY14B108K-ZS25XI 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 mixed-signal ICs for industrial, automotive, and IoT applications, with expertise in nonvolatile memory and timing solutions.
CY14B108K-ZS25XI belongs to Cypress's nvSRAM+RTC product line, engineered specifically for systems needing deterministic, zero-software-overhead data persistence with certified timekeeping - targeting mission-critical industrial and utility infrastructure.
FAQ
What is the minimum VCAP capacitance required for reliable AutoStore operation?
The CY14B108K-ZS25XI requires a minimum 12 µF tantalum or polymer capacitor on VCAP to ensure successful STORE during VCC dropout. This value is specified in the DC Electrical Characteristics table (page 19 of Rev. *N datasheet) and assumes worst-case voltage droop and temperature. Lower values risk incomplete STORE and data corruption.
Can VRTCcap and VRTCbat be connected simultaneously?
No - VRTCcap and VRTCbat are mutually exclusive backup sources. Connecting both violates absolute maximum ratings and may damage the RTC circuitry. The device uses internal logic to detect which source is present; only one should be populated, with the other left unconnected and floating.
Is the CY14B108K-ZS25XI pin-compatible with CY14B108M-ZS25XI?
No - CY14B108K (×8) and CY14B108M (×16) differ in address/data pin mapping: CY14B108K uses A0–A19 and DQ0–DQ7; CY14B108M uses A0–A18 and DQ0–DQ15 with BHE/BLE. Their 44-pin TSOP II footprints share mechanical compatibility but require PCB redesign for signal routing.
Does the AutoStore Disable feature function reliably?
No - the AutoStore Disable feature is nonfunctional per official errata (page 33, Rev. *N). Devices always enable AutoStore by default. To prevent unintended STORE, omit the VCAP capacitor and disable AutoStore via software sequence (see "Preventing AutoStore" section), though this removes hands-off power-loss protection.
CY14B108K-ZS25XI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 44-TSOP (0.400", 10.16mm Width)
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- NVSRAM
- Technology:
- NVSRAM (Non-Volatile SRAM)
- Memory Size:
- 8Mbit
- Memory Organization:
- 1M x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 25ns
- Access Time:
- 25 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TSOP II
CY14B108K-ZS25XI FAQ
1.How can I place an order for CY14B108K-ZS25XI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY14B108K-ZS25XI 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 CY14B108K-ZS25XI reliable?
The price and inventory of CY14B108K-ZS25XI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY14B108K-ZS25XI is usually 5 days.
3.What payment methods are accepted for CY14B108K-ZS25XI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY14B108K-ZS25XI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY14B108K-ZS25XI?
CY14B108K-ZS25XI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY14B108K-ZS25XI 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 CY14B108K-ZS25XI?
For technical support, including CY14B108K-ZS25XI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY14B108K-ZS25XI requirements.
6.How does Aetrix verify that CY14B108K-ZS25XI is sourced from the original manufacturer or authorized distributors?
All CY14B108K-ZS25XI 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 CY14B108K-ZS25XI meets industry standards.
7.What is the process for return or replacement of CY14B108K-ZS25XI?
All CY14B108K-ZS25XI units undergo pre-shipment inspection (PSI). If there is an issue with CY14B108K-ZS25XI, 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 CY14B108K-ZS25XI part is unused and in its original packaging.
Return procedure for CY14B108K-ZS25XI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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