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Infineon Technologies STK11C88-NF45I
- Part No.:
- STK11C88-NF45I
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Description:
- IC NVSRAM 256KBIT PAR 28SOIC
- Quantity:
Unit Price:$0
Ext Price:$0
- Payment:
- Shipping:
Product Details
STK11C88-NF45I - Infineon 256Kbit (32K x 8) Non-Volatile Static RAM (nvSRAM)
The STK11C88-NF45I is a high-performance 256Kbit nvSRAM from Infineon Technologies (formerly Cypress Semiconductor). It functions as a standard fast static RAM but with a critical advantage: it automatically captures and stores its data into an integrated non-volatile element upon power failure. Operating at 45ns access time and housed in a 28-pin SOIC, it is the ultimate solution for data logging and system state preservation in mission-critical environments.
Key Technology: Combines high-speed SRAM with quantum trap non-volatile cells, ensuring data integrity for over 20 years without the need for external batteries.
Overview & AutoStore™ Technology
The STK11C88-NF45I is designed to solve the problem of data loss during unexpected power interruptions. Unlike traditional battery-backed SRAMs, this nvSRAM uses AutoStore™ technology, which utilizes a small external capacitor to power the transfer of data from SRAM to the non-volatile cells the moment power dips below a safe threshold.
With a 45ns read/write cycle time, it meets the speed requirements of modern microprocessors while offering the peace of mind that system configurations, real-time logs, and calibration constants are permanently safe. Its industrial-grade temperature rating ensures stable operation even in harsh factory settings.
About Infineon Technologies
Infineon Technologies AG is a world leader in semiconductor solutions that make life easier, safer, and greener. Following the acquisition of Cypress Semiconductor, Infineon has become the premier provider of nvSRAM technology, supporting a wide range of industrial, automotive, and communication markets.
Infineon's nvSRAM portfolio is recognized for its uncompromising reliability and long-term supply, making them a staple in the Bill of Materials (BOM) for aerospace, medical, and industrial infrastructure projects globally.
Key Advantages
Eliminates the environmental impact, maintenance costs, and reliability issues associated with Lithium batteries.
The SRAM cells allow unlimited write cycles, unlike Flash or EEPROM which have limited write endurance.
Hardware-controlled AutoStore™ ensures data is saved instantly on power loss without software intervention.
Data stored in the non-volatile element is guaranteed to remain intact for decades under industrial temperatures.
Package & Physical Specs
The STK11C88-NF45I is supplied in a standard 28-pin SOIC (Small Outline Integrated Circuit) package. This 300-mil wide package is designed for automated surface-mount assembly.
- Package Code: NF28 (Infineon standard).
- Lead Finish: Pure Sn (RoHS compliant).
- Storage Temperature: -65°C to +150°C.
- Moisture Sensitivity: MSL Level 3.
Pin Functions
The pinout of the STK11C88-NF45I is compatible with standard 32K x 8 static RAMs, with the addition of nvSRAM specific control pins.
Technical Specifications
| Part Number | STK11C88-NF45I |
|---|---|
| Manufacturer | Infineon Technologies |
| Memory Type | nvSRAM (Non-Volatile SRAM) |
| Density | 256 Kbit (32K x 8) |
| Access Time | 45 ns |
| Voltage Supply | 4.5V to 5.5V |
| Operating Temp | -40°C to +85°C (Industrial) |
| Package / Case | 28-SOIC (0.295", 7.50mm Width) |
Equivalent & Replacement Guide
The STK11C88-NF45I is a widely used industrial part. Depending on stock availability and timing requirements, the following alternatives may be considered:
- STK11C88-NF25I: A faster 25ns version of the same device, fully backward compatible.
- CY14B256LA: A newer generation 256K nvSRAM from Infineon; check pin-compatibility for 5V vs 3V requirements.
- DS1230Y (Maxim/Analog Devices): A battery-backed SRAM alternative (Note: Requires a different board layout and utilizes an internal battery).
Typical Application Fields
Industrial Automation
Preserving PLC logic states and calibration data during factory power cycles.
Medical Instrumentation
Capturing patient history and equipment settings in life-critical monitors and ventilators.
Smart Meters & Grid
Logging energy consumption data and tamper events in utility meters.
Quality & Authenticity
- Infineon Qualified: Produced to the highest industrial standards for non-volatile memory.
- Endurance Testing: Every lot is screened for data retention and non-volatile transfer reliability.
- Date Code Integrity: We ensure full traceability and fresh date codes for all STK11C88 shipments.
Frequently Asked Questions
What happens if I don't use the VCAP capacitor?
Is the STK11C88-NF45I pin-compatible with standard SRAM?
Disclaimer
STK11C88-NF45I Information
- Specifications
- Tags
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-SOIC
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