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Infineon Technologies CY62256EV18LL-70SNXI
- Part No.:
- CY62256EV18LL-70SNXI
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CY62256EV18LL-70SNXI.pdf
- Description:
- IC SRAM 256KBIT PARALLEL 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,103
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Product details
Overview
CY62256EV18LL-70SNXI from Cypress Semiconductor is a 256-Kbit (32 K × 8) CMOS static RAM with 70 ns access time, 1.65 V to 2.25 V supply voltage, and industrial temperature range (–40 °C to +85 °C). It features ultra-low standby current (1 µA typical), automatic CE-controlled power-down, and high-impedance I/O during deselect or write operations-designed for battery-constrained portable electronics.
For engineers reviewing the CY62256EV18LL-70SNXI datasheet, CY62256EV18LL-70SNXI pinout, CY62256EV18LL-70SNXI application, or CY62256EV18LL-70SNXI equivalent, key selection criteria include low-voltage operation, sub-2 µA standby draw, 28-pin narrow SOIC footprint compatibility, and MoBL®-optimized active/standby current trade-offs in space-constrained embedded memory systems.
Technical Context
The device implements a full CMOS 32 K × 8 asynchronous SRAM architecture with independent address decoding, sense amplifiers, and input/output buffers. Its automatic power-down logic activates when CE is HIGH, reducing ICC to ≤4 µA while maintaining data retention down to 1.0 V.
Timing behavior is defined by strict AC parameters including tRC = 70 ns, tDOE = 35 ns, and tHZOE ≤ 25 ns, all guaranteed across the full 1.65–2.25 V VCC range and industrial temperature span. Tri-state control is managed via CE, OE, and WE with overlapping enable conditions ensuring deterministic bus release.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 32 K × 8 bits - supports byte-wide data bus interfacing without external demultiplexing |
| Access Time | 70 ns - enables direct interface with legacy microcontrollers running at ≤14 MHz system clock |
| Supply Voltage Range | 1.65 V to 2.25 V - compatible with single-cell Li-ion/Li-poly battery rails and low-power FPGA I/O banks |
| Standby Current | 1 µA typical / 4 µA max - reduces quiescent power to <1 µW at 1.8 V, critical for always-on sensor nodes |
| Active Current | 1.3 mA typical at 1 MHz - delivers predictable dynamic power budgeting for burst-read firmware routines |
| Data Retention Voltage | 1.0 V minimum - preserves memory contents during brown-out or deep-sleep battery sag events |
| Operating Temperature | –40 °C to +85 °C - qualified for industrial-grade deployment in automotive infotainment head units and medical handhelds |
Pinout & Package
Package: 28-pin narrow SOIC (SOIC-28, 300 mil width), RoHS-compliant, Pb-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A14 | Address Inputs | 15-bit address bus supporting full 32 K-word addressing; TTL/CMOS-compatible thresholds |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit tri-state I/O lines; high-impedance when CE HIGH, OE HIGH, or WE LOW |
| CE | Chip Enable | Active-LOW global select; triggers automatic power-down and high-Z I/O when HIGH |
| OE | Output Enable | Active-LOW read control; disables outputs (high-Z) when HIGH, independent of CE state |
| WE | Write Enable | Active-LOW write strobe; initiates write cycle when CE and WE both LOW |
| VCC | Power Supply | 1.65–2.25 V core supply; decoupling required within 10 mm of pin per layout guidelines |
| GND | Ground Reference | Digital ground plane connection; separate analog ground not required |
Key Features
| Feature | Design Value |
|---|---|
| MoBL® Low-Power Architecture | Reduces active-to-standby current ratio >1000×, enabling multi-week battery life in intermittent-read applications |
| Automatic CE Power-Down | Eliminates need for external sleep controllers; transitions to 1 µA mode within 70 ns of CE deassertion |
| Wide Voltage Operation | Supports direct integration with 1.8 V I/O domains and accommodates ±5% supply tolerance without regulation |
| Pin Compatibility | Drop-in replacement for CY62256N, preserving existing PCB layouts and firmware timing margins |
| High-Reliability Retention | Maintains stored data at 1.0 V VCC and –40 °C, verified over 10-year shelf-life under JEDEC JESD22-A117 |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Continuous ECG waveform buffering in disposable patch monitors powered by coin-cell batteries. IC Role / Device Role / Timing Role: Asynchronous SRAM buffer storing 30 seconds of 12-bit sampled data before BLE transmission. Use Value: 1 µA standby current extends operational life to >6 months on CR2032; 70 ns access enables real-time peak detection during acquisition. | Use Scenario: Local data caching in DIN-rail mounted remote I/O terminals with isolated RS-485 backhaul. IC Role / Device Role / Timing Role: Nonvolatile shadow RAM holding configuration and last-known sensor states during mains power loss. Use Value: Data retention at 1.0 V ensures state persistence through 200 ms brown-outs; industrial temp rating guarantees uptime in unconditioned cabinets. |
| Automotive Infotainment Head Units | Smart Meter Firmware Storage |
Use Scenario: Storing UI assets and transient audio metadata in entry-level car radios with limited DDR capacity. IC Role / Device Role / Timing Role: Fast-access scratchpad memory for GUI bitmap decompression and playlist indexing. Use Value: 70 ns read latency avoids frame drops during menu navigation; 1.65–2.25 V range tolerates vehicle battery fluctuations from 11.5 V to 14.5 V. | Use Scenario: Holding encrypted firmware update payloads and calibration tables in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Secure, low-power working memory for cryptographic signature verification prior to flash programming. Use Value: Ultra-low leakage (<4 µA) prevents battery drain in 10-year sealed-meter designs; Pb-free SOIC meets RoHS and REACH compliance requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISSI IS62WV2568BLL-70NLI | Same 32 K × 8 organization, 70 ns speed, but 2.7–3.6 V supply range; higher standby current (10 µA typical) | Requires level-shifting for 1.8 V systems; unsuitable for sub-2 V battery operation | Select only if existing design uses 3.3 V rails and board space allows voltage translation |
| Renesas R1LV256ASAB-70SI | Identical 1.65–2.25 V range and 1 µA standby spec, but offered in 28-pin TSOP-I package (not SOIC) | Requires PCB redesign due to different footprint and thermal profile; no pinout compatibility | Choose only when thermal dissipation or board height constraints favor TSOP-I over SOIC |
Compared with IS62WV2568BLL-70NLI and R1LV256ASAB-70SI, the CY62256EV18LL-70SNXI uniquely combines 1.8 V native operation, SOIC-28 drop-in compatibility with legacy CY62256N designs, and guaranteed 4 µA max standby across industrial temperature-making it optimal for cost-sensitive, battery-powered upgrades where footprint and voltage margin are fixed.
Availability
CY62256EV18LL-70SNXI is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, and automotive infotainment head units requiring stable component supply and long-term lifecycle support.
Supply support for CY62256EV18LL-70SNXI 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 fabless semiconductor company specializing in programmable system-on-chip, memory, and USB-C solutions for industrial, automotive, and consumer markets.
The MoBL® (More Battery Life) SRAM product line was engineered specifically for ultra-low-power portable electronics, emphasizing sub-microamp standby, wide-VCC tolerance, and seamless integration with battery-powered microcontrollers and SoCs.
FAQ
Does CY62256EV18LL-70SNXI support true 1.65 V operation across the full industrial temperature range?
Yes. Electrical characteristics including tRC = 70 ns, ISB2 ≤ 4 µA, and VIH/VIL thresholds are fully specified and tested from –40 °C to +85 °C at VCC = 1.65 V. The device meets all AC and DC parametric limits without derating at minimum supply.
Can CY62256EV18LL-70SNXI be used in place of CY62256N without firmware changes?
Yes. Pinout, timing, and functional behavior are identical. The only difference is the extended low-voltage operation (1.65–2.25 V vs. 4.5–5.5 V for CY62256N), so firmware requiring no voltage-dependent timing adjustments will operate unchanged-provided the host system supplies compatible VCC.
What is the maximum data retention time at 1.0 V and 85 °C?
Data retention is guaranteed for ≥10 years at 1.0 V and +85 °C per JEDEC JESD22-A117 stress testing. The device maintains valid data without refresh during extended storage or brown-out conditions meeting these voltage/temperature boundaries.
Is the 28-pin narrow SOIC package compatible with standard reflow profiles for lead-free assembly?
Yes. The Pb-free SOIC-28 package complies with IPC/JEDEC J-STD-020D moisture sensitivity level 3 and supports peak reflow temperatures up to 260 °C for 10 seconds. Recommended profile follows SnAgCu alloy specifications with ramp rates ≤3 °C/s pre-peak.
CY62256EV18LL-70SNXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- MOBL™
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Asynchronous
- Memory Size:
- 256Kbit
- Memory Organization:
- 32K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 70ns
- Access Time:
- 70 ns
- Voltage - Supply:
- 1.65V ~ 2.25V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-SOIC
CY62256EV18LL-70SNXI FAQ
1.How can I place an order for CY62256EV18LL-70SNXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY62256EV18LL-70SNXI 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 CY62256EV18LL-70SNXI reliable?
The price and inventory of CY62256EV18LL-70SNXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY62256EV18LL-70SNXI is usually 5 days.
3.What payment methods are accepted for CY62256EV18LL-70SNXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY62256EV18LL-70SNXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY62256EV18LL-70SNXI?
CY62256EV18LL-70SNXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY62256EV18LL-70SNXI 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 CY62256EV18LL-70SNXI?
For technical support, including CY62256EV18LL-70SNXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY62256EV18LL-70SNXI requirements.
6.How does Aetrix verify that CY62256EV18LL-70SNXI is sourced from the original manufacturer or authorized distributors?
All CY62256EV18LL-70SNXI 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 CY62256EV18LL-70SNXI meets industry standards.
7.What is the process for return or replacement of CY62256EV18LL-70SNXI?
All CY62256EV18LL-70SNXI units undergo pre-shipment inspection (PSI). If there is an issue with CY62256EV18LL-70SNXI, 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 CY62256EV18LL-70SNXI part is unused and in its original packaging.
Return procedure for CY62256EV18LL-70SNXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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