My Inquiry
My Account
Cypress Semiconductor Corp CY62128ELL-45SXA
- Part No.:
- CY62128ELL-45SXA
- Manufacturer:
- Cypress Semiconductor Corp
- Category:
- Memory
- Package:
- 32-SOIC (0.445", 11.30mm Width)
- Datasheet:
-
CY62128ELL-45SXA.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:99,727
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY62128ELL-45SXA from Cypress Semiconductor is a 1-Mbit (128 K × 8) CMOS static RAM with 45 ns access time, 4.5–5.5 V supply voltage, and industrial temperature range (–40 °C to +85 °C). It features dual chip enables (CE1/CE2), ultra-low standby current (1 µA typical), and automatic power-down when deselected-designed for battery-powered portable systems requiring reliable non-volatile data retention during sleep modes.
For engineers reviewing the CY62128ELL-45SXA datasheet, CY62128ELL-45SXA pinout, CY62128ELL-45SXA application, or CY62128ELL-45SXA equivalent, this SRAM delivers verified timing compliance for legacy 5 V TTL microcontrollers, supports memory expansion via CE/OE control logic, and maintains data integrity at VCC ≥ 2.0 V in retention mode.
Technical Context
The CY62128ELL-45SXA implements a 128K × 8 asynchronous SRAM architecture with complementary metal oxide semiconductor (CMOS) process technology. Its dual chip enable (CE1 LOW + CE2 HIGH for active, CE1 HIGH or CE2 LOW for standby) enables hierarchical memory banking and seamless integration into multi-chip address-decoded systems.
It uses TTL-compatible input thresholds (VIH = 2.2 V min, VIL = 0.8 V max) and drives outputs to VOH ≥ 2.4 V (at IOH = –1 mA, VCC = 4.5 V), ensuring interoperability with 5 V microcontrollers without level-shifting. Data retention operates down to VCC = 2.0 V with ICCDR ≤ 4 µA (industrial grade).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 128 K × 8 bits - provides 131,072 bytes of byte-addressable, non-refreshing RAM for firmware buffers or real-time data logging. |
| Access Time (tAA) | 45 ns max - guarantees sub-22 MHz random read throughput for 8051, Z80, or legacy ARM7-based controllers. |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5 V rail designs and tolerant of ±10% regulation drift. |
| Standby Current (ISB2) | 1 µA typical / 4 µA max - reduces battery drain to <1 µA during deep-sleep states in portable medical or metering devices. |
| Operating Current (ICC) | 1.3 mA typical at 1 MHz - enables low-power continuous polling in sensor interface subsystems without thermal derating. |
| Data Retention Voltage | VCC ≥ 2.0 V - preserves memory contents during brown-out conditions or controlled power-down sequences. |
| Input Compatibility | TTL-level inputs (VIH ≥ 2.2 V, VIL ≤ 0.8 V) - eliminates need for external level translators when interfacing with 5 V logic families. |
Pinout & Package
Package: 32-pin STSOP (Shrink Thin Small Outline Package), RoHS-compliant, 8.9 mm × 11.8 mm footprint with 0.5 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word decoding; A16 enables high-page selection in expanded memory maps. |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface with high-impedance tri-state control; driven only during valid read/write cycles per CE/OE/WE state. |
| CE1, CE2 | Dual Chip Enable Inputs | Active-LOW CE1 AND active-HIGH CE2 required for access; CE1 HIGH or CE2 LOW forces automatic power-down and Hi-Z I/O. |
| OE | Output Enable | Active-LOW control enabling output drivers only during read cycles; independent of write operations. |
| WE | Write Enable | Active-LOW signal initiating write cycle; latches data on I/O pins when CE1/CE2 are asserted and OE is HIGH. |
| VCC, VSS | Power Supply | Single 5 V supply (4.5–5.5 V); no separate I/O or core voltage rails-simplifies PCB routing and decoupling. |
| NC | No Connect | Pin 26 (A15) is NC in STSOP package-must remain unconnected; not bonded to die. |
Key Features
| Feature | Design Value |
|---|---|
| MoBL® Ultra-Low Power Architecture | Reduces standby current to 1 µA typical-enables >1-year battery life in coin-cell-powered IoT endpoints. |
| Automatic Power-Down Mode | Enters <4 µA ISB2 state within 45 ns of CE deassertion-eliminates software-controlled sleep entry overhead. |
| Pin Compatibility with CY62128B | Direct drop-in replacement for legacy CY62128B designs-no PCB rework required for performance upgrade. |
| TTL-Level Input Interface | Accepts standard 5 V logic thresholds-avoids external level shifters in mixed-logic systems with 3.3 V peripherals and 5 V CPUs. |
| Robust Data Retention | Maintains stored data at VCC = 2.0 V and TA = 85 °C-supports fail-safe shutdown in automotive ECU applications. |
Applications
| Portable Medical Monitor | Industrial PLC I/O Module |
|---|---|
Use Scenario: Real-time waveform buffering in handheld ECG units with intermittent wireless transmission. IC Role / Device Role / Timing Role: Asynchronous SRAM storing 10-second raw analog samples prior to compression and BLE upload. Use Value: 45 ns access enables rapid DMA transfer from ADC controller; 1 µA standby extends AA battery life to 18 months. |
Use Scenario: Local register storage for digital input/output status in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Non-volatile shadow RAM holding last-known I/O states during AC power interruption. Use Value: Data retention at 2.0 V ensures state persistence across 100-ms brown-outs; CE-controlled power-down minimizes heat in enclosed enclosures. |
| Automotive Body Control Module | Legacy Industrial HMI Terminal |
Use Scenario: Storing configuration parameters and fault logs in vehicle door modules operating across –40 °C to +125 °C ambient. IC Role / Device Role / Timing Role: Automotive-E grade SRAM retaining EEPROM-like settings without wear-out limitations. Use Value: Qualified for 125 °C operation with ≤30 µA ICCDR-meets ISO 16750-4 thermal stress requirements. |
Use Scenario: Memory expansion for 8086-based human-machine interface terminals running DOS-based SCADA frontends. IC Role / Device Role / Timing Role: Byte-wide SRAM replacing aging 27C512 EPROMs in field-upgradable firmware overlays. Use Value: Pin-compatible with CY62128B and TTL-level interface-enables direct socket replacement without logic redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISSI IS62C128AL-45ULI | Same 128K × 8 organization, 45 ns speed, but uses single CE and CMOS-level inputs (VIH = 0.7×VCC). | Requires level-shifting for TTL CPU interfaces; lacks dual CE for hierarchical bank control. | Select if migrating to modern 3.3 V systems or needing lower ICC active current (1.0 mA typ). |
| ON Semiconductor MC68HC11E9CP | Microcontroller with integrated 512-byte RAM-not a standalone SRAM; no pin compatibility or memory expansion capability. | Not a drop-in replacement; requires full firmware and hardware redesign. | Only consider for greenfield designs where on-chip RAM suffices and external memory expansion is unnecessary. |
Compared with IS62C128AL-45ULI, CY62128ELL-45SXA offers native TTL compatibility and dual CE for flexible memory mapping; versus MC68HC11E9CP, it provides scalable, pin-compatible external RAM essential for legacy 8/16-bit system upgrades.
Availability
CY62128ELL-45SXA is available at Aetrix Electronics and suitable for portable medical monitors, industrial PLC I/O modules, and automotive body control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CY62128ELL-45SXA 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 logic solutions for industrial, automotive, and consumer applications.
The CY62128E MoBL® SRAM product line targets battery-constrained portable electronics, delivering ultra-low power consumption and TTL compatibility without sacrificing speed or density.
FAQ
Is CY62128ELL-45SXA compatible with 3.3 V microcontrollers?
No. CY62128ELL-45SXA requires 4.5–5.5 V supply and accepts TTL-level inputs (VIH ≥ 2.2 V), making it incompatible with native 3.3 V logic without level translation. Its output VOH is guaranteed ≥2.4 V at 4.5 V, insufficient for reliable 3.3 V receiver thresholds. Use IS62WV1288BLL-55NLI for 3.3 V systems.
What is the function of the NC pin in the STSOP package?
Pin 26 (labeled A15 in pin diagrams) is marked NC (No Connect) in the CY62128ELL-45SXA STSOP variant and is not bonded to the silicon die. It must remain unconnected on the PCB-routing or soldering to this pin may cause electrical interference or mechanical stress. This differs from SOIC/TSOP variants where A15 is functional.
Does CY62128ELL-45SXA support battery backup operation?
Yes. When VCC drops to ≥2.0 V and CE1 is HIGH or CE2 is LOW, the device enters data retention mode with ICCDR ≤4 µA (industrial grade). This allows retention during brown-out or controlled shutdown, provided address/data lines remain stable and VCC does not fall below 2.0 V.
How does the dual CE architecture improve system design?
Dual CE (CE1 LOW + CE2 HIGH) enables hierarchical memory decoding: CE2 can serve as global bank select while CE1 acts as local chip select. This simplifies address decoding logic in multi-SRAM systems and allows automatic power-down of unused banks-reducing total system standby current without software intervention.
CY62128ELL-45SXA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Cypress Semiconductor Corp
- Series:
- MOBL™
- Package/Case:
- 32-SOIC (0.445", 11.30mm Width)
- Packaging:
- Bulk
- 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:
- 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:
- 32-SOIC
CY62128ELL-45SXA FAQ
1.How can I place an order for CY62128ELL-45SXA through Aetrix?
Please submit a Request for Quotation (RFQ) for CY62128ELL-45SXA 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-45SXA reliable?
The price and inventory of CY62128ELL-45SXA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY62128ELL-45SXA is usually 5 days.
3.What payment methods are accepted for CY62128ELL-45SXA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY62128ELL-45SXA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY62128ELL-45SXA?
CY62128ELL-45SXA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY62128ELL-45SXA 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-45SXA?
For technical support, including CY62128ELL-45SXA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY62128ELL-45SXA requirements.
6.How does Aetrix verify that CY62128ELL-45SXA is sourced from the original manufacturer or authorized distributors?
All CY62128ELL-45SXA 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-45SXA meets industry standards.
7.What is the process for return or replacement of CY62128ELL-45SXA?
All CY62128ELL-45SXA units undergo pre-shipment inspection (PSI). If there is an issue with CY62128ELL-45SXA, 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-45SXA part is unused and in its original packaging.
Return procedure for CY62128ELL-45SXA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY62128ELL-45SXA Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
Machine vision system guide covering components, inspection workflow, camera and lens selection, FOV, pixel resolution, motion blur, strobe lighting, bandwidth, 2D/3D vision, integration, troubleshooti…
