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Infineon Technologies STK14C88-NF45TR
- Part No.:
- STK14C88-NF45TR
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 32-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
STK14C88-NF45TR.pdf
- Description:
- IC NVSRAM 256KBIT PAR 32SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,210
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Product details
Overview
STK14C88-NF45TR from Cypress Semiconductor is a 256 Kb (32K × 8) nonvolatile static RAM with integrated Quantum Trap storage, delivering 45 ns read/write cycle time, automatic STORE on power loss, and automatic RECALL on power-up. It operates from a single 5V ±10% supply, supports commercial temperature range (0°C to 70°C), and uses a 32-pin 300-mil SOIC package. It is deployed in industrial control systems requiring persistent memory without battery backup.
For engineers reviewing the STK14C88-NF45TR datasheet, STK14C88-NF45TR pinout, STK14C88-NF45TR application, or STK14C88-NF45TR equivalent, key selection criteria include AutoStore timing (10 ms STORE duration), HSB-controlled hardware STORE initiation, VCAP capacitor interface for energy hold-up, and compatibility with standard SRAM bus protocols in legacy embedded systems.
Technical Context
The STK14C88-NF45TR integrates volatile SRAM and nonvolatile Quantum Trap cells monolithically-each memory cell includes both storage elements. STORE transfers data from SRAM to nonvolatile cells upon power failure detection or external HSB assertion; RECALL restores data unconditionally at power-on reset.
It supports dual-mode nonvolatile operation: hardware-triggered STORE via active-low HSB pulse (≥15 ns width), and software-controlled STORE/RECALL via address/command sequences. The device maintains full SRAM timing compliance (tRC = 45 ns) during volatile access while isolating nonvolatile cycles via dedicated control logic and internal power management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 256 Kb (32,768 × 8-bit), directly replaces standard 32K×8 SRAMs in pin-compatible designs |
| Read/Write Cycle Time | 45 ns - enables integration into 22 MHz synchronous bus systems without wait states |
| STORE Duration | 10 ms - defines minimum power-fail hold-up time required on VCAP capacitor |
| Data Retention | 100 years - ensures long-term archival of configuration or calibration data without refresh |
| Endurance | 1 million STORE cycles - supports frequent logging or state capture in telemetry applications |
| Supply Voltage | 5.0 V ±10% - compatible with legacy 5V logic families and avoids level-shifting overhead |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade industrial controllers and instrumentation |
Pinout & Package
Package: 32-pin 300-mil SOIC (RoHS-compliant), surface-mount, 0.030" lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A14 | Address Input | 15-bit address bus supporting full 32K-word addressing; A14 is MSB |
| DQ0–DQ7 | Bidirectional Data I/O | 8-bit parallel data path; tristates when G high or E inactive |
| E | Chip Enable (active low) | Primary chip select; must be low for read/write access; controls standby entry |
| W | Write Enable (active low) | Enables write latching on falling edge of E; must be high during reads |
| G | Output Enable (active low) | Controls DQ output drivers; high = high-impedance state |
| HSB | Hardware Store Busy (I/O) | Open-drain output indicating STORE progress; input pulse initiates hardware STORE |
| VCAP | AutoStore Capacitor Terminal | Connects external capacitor (typically 4.7 µF tantalum) to sustain STORE during VCC dropout |
| VCC | Power Supply | 5V ±10% main supply; powers SRAM core and control logic |
| VSS | Ground | Reference return for all signals and power domains |
Key Features
| Feature | Design Value |
|---|---|
| Automatic Power-Loss STORE | Detects VCC drop below threshold and triggers nonvolatile save within 1 μs, eliminating external supervision circuitry |
| Unlimited SRAM Read/Write Endurance | Supports continuous real-time data buffering and logging without wear-out concerns |
| Software-Controlled STORE/RECALL | Uses specific address sequences to initiate nonvolatile operations without HSB hardware interaction |
| 100-Year Data Retention | Enables permanent storage of calibration coefficients, serial numbers, or firmware flags across product lifetime |
| Single 5V Supply Operation | Removes need for auxiliary batteries, supercaps, or charge pumps in space-constrained designs |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Memory |
|---|---|
Use Scenario: Storing ladder logic parameters and I/O mapping in programmable logic controllers during runtime and power cycling. IC Role / Device Role / Timing Role: Nonvolatile SRAM acting as persistent configuration register bank with zero-latency recall at boot. Use Value: Eliminates EEPROM write delays and wear-out; guarantees valid configuration on every cold start without initialization delay. | Use Scenario: Holding factory-calibrated sensor offsets and gain factors in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, long-retention memory for critical calibration data accessed at system startup and during self-test. Use Value: Maintains traceable calibration integrity over 10+ years without periodic reprogramming or battery maintenance. |
| Avionics Black Box Event Logging | Point-of-Sale Transaction Buffer |
Use Scenario: Capturing flight-critical status snapshots before power interruption in cockpit display units. IC Role / Device Role / Timing Role: High-speed buffer with deterministic 10 ms STORE completion for crash-protected data capture. Use Value: Meets DO-160 lightning-induced power-drop requirements by completing STORE before VCAP discharge below functional threshold. | Use Scenario: Temporarily storing transaction records in retail terminals during network outages or power flickers. IC Role / Device Role / Timing Role: Volatile cache with guaranteed persistence on mains failure, enabling transaction recovery post-reboot. Use Value: Prevents financial data loss during brief AC interruptions, satisfying PCI-DSS audit requirements for data durability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nonvolatile SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STK14CA8-NF45TR | Same pinout and function but rated for industrial temp (–40°C to 85°C); higher ICC1 standby current (31 mA vs. 30 mA) | Suitable for extended-temperature environments where STK14C88-NF45TR's 0°C–70°C range is insufficient | Select when operating ambient exceeds 70°C or requires wider qualification margin |
| FM1808-45-TG | 45 ns access, 256 Kb nvSRAM from Cypress successor (Cypress → Infineon); identical STORE/RECALL behavior but updated VCAP drive capability | Drop-in replacement with enhanced reliability and longer production support; same PCB layout | Preferred for new designs due to active lifecycle status and improved manufacturing yield |
Compared with STK14C88-NF45TR, STK14CA8-NF45TR extends thermal range at minor power cost, while FM1808-45-TG offers identical functionality with modern process and assured long-term availability-making it the recommended upgrade path where redesign is feasible.
Availability
STK14C88-NF45TR is available at Aetrix Electronics and suitable for industrial PLCs, medical calibration systems, avionics data recorders, and point-of-sale terminals requiring stable component supply and long-lifecycle support.
Supply support for STK14C88-NF45TR 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) is a U.S.-based semiconductor company specializing in memory, microcontrollers, and connectivity solutions for industrial, automotive, and consumer markets.
The STK14C88 belongs to Cypress's nvSRAM product line, engineered to replace battery-backed SRAM in mission-critical systems where data persistence, reliability, and zero-maintenance operation are mandatory.
FAQ
What is the required VCAP capacitor value and type for reliable AutoStore operation?
A 4.7 µF solid tantalum capacitor rated for ≥6.3 V must be connected between VCAP and VSS, placed within 10 mm of the STK14C88-NF45TR. This provides sufficient energy to complete the 10 ms STORE cycle during VCC dropout. Ceramic capacitors are not recommended due to insufficient capacitance retention under bias.
Can STK14C88-NF45TR operate in software STORE mode only, without using the HSB pin?
Yes. Software STORE is initiated by writing specific address patterns (0x0000–0x0003) while holding HSB high. This mode eliminates external HSB control circuitry and allows STORE triggering from firmware-ideal for systems where pin count or board space is constrained.
Does RECALL occur automatically even if the previous STORE was incomplete or interrupted?
Yes. RECALL always executes fully on power-up regardless of prior STORE status. The device restores the last successfully stored image from Quantum Trap cells. If no valid STORE completed, RECALL loads default values (all 0xFF or user-defined pattern depending on design).
Is STK14C88-NF45TR compatible with 3.3V-only systems?
No. STK14C88-NF45TR requires a 5.0 V ±10% supply and TTL/CMOS-compatible input thresholds (VIH = 2.2 V min). Interfacing with 3.3V controllers requires level translation on all address, data, and control lines-no internal voltage regulation or mixed-voltage I/O is supported.
STK14C88-NF45TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 32-SOIC (0.295", 7.50mm 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:
- 256Kbit
- Memory Organization:
- 32K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 45ns
- Access Time:
- 45 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-SOIC
STK14C88-NF45TR FAQ
1.How can I place an order for STK14C88-NF45TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STK14C88-NF45TR 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 STK14C88-NF45TR reliable?
The price and inventory of STK14C88-NF45TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STK14C88-NF45TR is usually 5 days.
3.What payment methods are accepted for STK14C88-NF45TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STK14C88-NF45TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STK14C88-NF45TR?
STK14C88-NF45TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STK14C88-NF45TR 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 STK14C88-NF45TR?
For technical support, including STK14C88-NF45TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STK14C88-NF45TR requirements.
6.How does Aetrix verify that STK14C88-NF45TR is sourced from the original manufacturer or authorized distributors?
All STK14C88-NF45TR 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 STK14C88-NF45TR meets industry standards.
7.What is the process for return or replacement of STK14C88-NF45TR?
All STK14C88-NF45TR units undergo pre-shipment inspection (PSI). If there is an issue with STK14C88-NF45TR, 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 STK14C88-NF45TR part is unused and in its original packaging.
Return procedure for STK14C88-NF45TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STK14C88-NF45TR Tags
-
M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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