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Infineon Technologies CY62128ELL-55SXE
- Part No.:
- CY62128ELL-55SXE
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 32-SOIC (0.445", 11.30mm Width)
- Datasheet:
-
CY62128ELL-55SXE.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:135
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Product details
Overview
CY62128ELL-55SXE from Cypress Semiconductor is a 1-Mbit (128 K × 8) CMOS static RAM with 45 ns access time (Industrial/Automotive-A), 5.0 V nominal supply, ultra-low standby current (1 µA typical), and automatic power-down when deselected. It serves as main or buffer memory in portable industrial controllers requiring battery longevity and TTL-level interfacing.
For engineers reviewing the CY62128ELL-55SXE datasheet, CY62128ELL-55SXE pinout, CY62128ELL-55SXE application, or CY62128ELL-55SXE equivalent, key selection criteria include its dual chip enable (CE1/CE2) logic, 32-pin STSOP package, 4.5–5.5 V operation, MoBL® low-power architecture, and compatibility with legacy 5 V TTL microcontrollers.
Technical Context
The CY62128ELL-55SXE implements a 128K × 8 asynchronous SRAM array with complementary metal oxide semiconductor (CMOS) process technology optimized for speed-power trade-off. Its dual CE architecture (CE1 LOW + CE2 HIGH for enable) enables seamless memory expansion without external logic.
It features automatic power-down on address stability loss, reducing ICC to ≤4 µA (Industrial) when deselected. Output drivers meet TTL voltage thresholds (VOH ≥ 2.4 V at IOH = –1 mA), confirming direct interface capability with 5 V TTL processors - not CMOS I/O level systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 128 K × 8 bits - supports byte-wide data bus without multiplexing or external data latching |
| Access Time (tAA) | 55 ns (Automotive-E grade) - guarantees timing margin for 12 MHz system clocks with setup/hold compliance |
| Supply Voltage Range | 4.5 V to 5.5 V - compatible with standard 5 V rail and tolerates ±10% regulation drift |
| Standby Current (ISB2) | 1 µA typical / 4 µA max (Industrial) - enables >1-year battery life in always-on sensor nodes |
| Active Current (ICC) | 1.3 mA typical at 1 MHz - scales linearly with frequency, enabling predictable power budgeting |
| Input/Output Levels | TTL-compatible inputs and outputs - eliminates level-shifting circuitry when interfacing with 8051, Z80, or legacy MCU families |
| Operating Temperature | –40 °C to +85 °C (Industrial/Automotive-A) - validated for deployment in factory automation and vehicle cabin ECUs |
Pinout & Package
Package: 32-pin STSOP (Shrink Thin Small Outline Package), RoHS-compliant, body size 10.16 mm × 5.59 mm × 1.2 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K word decoding; no internal multiplexing |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit TTL-compatible data path; high-impedance when CE1 HIGH or CE2 LOW or OE HIGH |
| CE1, CE2 | Chip Enable Inputs | Active-LOW CE1 AND active-HIGH CE2 required for device selection; enables hierarchical memory mapping |
| OE | Output Enable | Active-LOW control of output drivers; independent of write cycle, allowing read-modify-write sequences |
| WE | Write Enable | Active-LOW signal initiating write; timing-critical for tSD (25 ns data setup) and tPWE (35 ns pulse width) |
| VCC, VSS | Power Supply | Single 5 V supply with dedicated ground; decoupling required within 10 mm of pins 16 and 32 per layout guidelines |
| NC | No Connect | Pin 26 (TSOP/STSOP) is unconnected on die - must be left floating or tied to GND per PCB routing constraints |
Key Features
| Feature | Design Value |
|---|---|
| MoBL® Ultra-Low Standby Power | Reduces system quiescent current by >99% during idle cycles, extending coin-cell or Li-ion runtime in portable HMI devices |
| Dual Chip Enable Logic | Enables direct cascading of up to four 128K×8 banks using only address MSBs - no glue logic needed for 512 KB expansion |
| TTL-Level Interface Compliance | Meets VOH ≥ 2.4 V and VOL ≤ 0.4 V specs at 5 V, eliminating level translators when connecting to 80C51, 68HC11, or 8085 derivatives |
| Automatic Power-Down on Address Stability | Halts internal array refresh and precharge when A0–A16 are static, cutting ICC to sub-µA without software intervention |
| 32-Pin STSOP Thermal Performance | θJA = 32.56 °C/W enables continuous operation at 85 °C ambient without heatsink in compact industrial enclosures |
Applications
| Industrial PLC I/O Buffer | Automotive Cabin Controller Memory |
|---|---|
Use Scenario: Stores real-time sensor status and actuator command history in DIN-rail mounted programmable logic controllers with limited board space. IC Role / Device Role / Timing Role: Asynchronous byte-wide scratchpad memory buffering Modbus RTU frame payloads between UART and CPU. Use Value: 55 ns access ensures deterministic response under 10 ms scan cycles; 4 µA standby preserves backup battery during mains failure. | Use Scenario: Holds configuration profiles and fault logs in HVAC control modules operating inside vehicle dashboards. IC Role / Device Role / Timing Role: Non-volatile shadow RAM (paired with EEPROM) storing calibration offsets and user preferences across ignition cycles. Use Value: Automotive-A temperature rating (–40 °C to +85 °C) and 5.5 V tolerance withstand load-dump transients without data corruption. |
| Portable Medical Monitor Frame Buffer | Legacy Industrial HMI Display Cache |
Use Scenario: Temporarily stores waveform segments for ECG or SpO₂ displays powered by single-cell lithium batteries. IC Role / Device Role / Timing Role: High-speed pixel line buffer feeding parallel RGB interface of monochrome TFT panel. Use Value: 1 µA typical ISB2 extends battery life beyond 72 hours in standby; TTL compatibility avoids adding level shifters to low-cost MCU design. | Use Scenario: Replaces obsolete 27C512 EPROMs in aging human-machine interface panels running DOS-based ladder logic interpreters. IC Role / Device Role / Timing Role: Read-only instruction/data cache mapped into 80286's 1 MB address space via fixed decode logic. Use Value: Pin compatibility with CY62128B allows drop-in replacement; 45 ns access meets original timing budgets without redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISSI IS62WV1288BLL-55MLI | Same 128K × 8 organization, 55 ns access, but uses single CE and operates down to 2.7 V | Supports wider voltage range; lacks dual CE for hierarchical expansion | Select if migrating to 3.3 V systems or simplifying enable logic; verify TTL output drive compatibility |
| Cypress CY62128EV30LL-45ZSXI | Same pinout and function, but 45 ns speed grade and TSOP-I package instead of STSOP | Higher performance at same temp grade; different thermal resistance (θJA = 33.01 °C/W) | Choose for tighter timing margins in new designs; confirm PCB footprint and thermal pad rework feasibility |
Compared with IS62WV1288BLL-55MLI and CY62128EV30LL-45ZSXI, the CY62128ELL-55SXE uniquely balances automotive-grade reliability, dual CE expandability, and proven TTL interoperability - making it optimal for brownfield industrial upgrades where legacy timing and interface constraints dominate.
Availability
CY62128ELL-55SXE is available at Aetrix Electronics and suitable for industrial PLC I/O buffering, automotive cabin controller memory, and portable medical monitor frame buffers requiring stable component supply across extended product lifecycles.
Supply support for CY62128ELL-55SXE 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 memory and programmable solutions for industrial, automotive, and IoT applications.
The CY62128E MoBL® SRAM product line targets battery-constrained portable and embedded systems needing TTL-compatible, low-quiescent-current memory with guaranteed timing over extended temperature ranges.
FAQ
Is CY62128ELL-55SXE compatible with 3.3 V microcontrollers?
No. The CY62128ELL-55SXE requires 4.5–5.5 V supply and is specified for TTL-level I/O (VOH ≥ 2.4 V, VOL ≤ 0.4 V). It does not meet 3.3 V CMOS input thresholds and lacks 3.3 V operation support. Interfacing with 3.3 V MCUs requires level-shifting circuitry or selection of a 3.3 V SRAM like ISSI IS62WV1288BLL.
What is the function of the NC pin (Pin 26) in the STSOP package?
Pin 26 is a no-connect terminal - internally unconnected to the die. Per Cypress documentation, it may be left floating or tied to ground based on PCB routing needs, but must never be driven or used as a signal path. Its presence accommodates package standardization across the CY62128E family.
Does CY62128ELL-55SXE support battery-backed data retention?
Yes. When VCC is reduced to ≥2.0 V and CE1 is held HIGH or CE2 LOW, the device enters data retention mode drawing ≤4 µA (Industrial grade). This allows retention for weeks on a 220 mAh coin cell, provided external circuitry maintains VCC above VDR during power loss.
How does the dual CE architecture improve memory expansion?
The CE1 (active-LOW) and CE2 (active-HIGH) inputs allow hierarchical decoding: CE2 can be driven by an upper address bit (e.g., A17), while CE1 is controlled by lower decode logic. This enables direct bank selection of multiple CY62128ELL-55SXE devices without additional gates - reducing component count and propagation delay in multi-megabyte memory maps.
CY62128ELL-55SXE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- MOBL™
- Package/Case:
- 32-SOIC (0.445", 11.30mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Asynchronous
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 55ns
- Access Time:
- 55 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-SOIC
CY62128ELL-55SXE FAQ
1.How can I place an order for CY62128ELL-55SXE through Aetrix?
Please submit a Request for Quotation (RFQ) for CY62128ELL-55SXE 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 CY62128ELL-55SXE reliable?
The price and inventory of CY62128ELL-55SXE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY62128ELL-55SXE is usually 5 days.
3.What payment methods are accepted for CY62128ELL-55SXE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY62128ELL-55SXE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY62128ELL-55SXE?
CY62128ELL-55SXE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY62128ELL-55SXE 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 CY62128ELL-55SXE?
For technical support, including CY62128ELL-55SXE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY62128ELL-55SXE requirements.
6.How does Aetrix verify that CY62128ELL-55SXE is sourced from the original manufacturer or authorized distributors?
All CY62128ELL-55SXE 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 CY62128ELL-55SXE meets industry standards.
7.What is the process for return or replacement of CY62128ELL-55SXE?
All CY62128ELL-55SXE units undergo pre-shipment inspection (PSI). If there is an issue with CY62128ELL-55SXE, 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 CY62128ELL-55SXE part is unused and in its original packaging.
Return procedure for CY62128ELL-55SXE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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