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Cypress Semiconductor Corp CY62128ELL-45ZAXI
- Part No.:
- CY62128ELL-45ZAXI
- Manufacturer:
- Cypress Semiconductor Corp
- Category:
- Memory
- Package:
- 32-TFSOP (0.465", 11.80mm Width)
- Datasheet:
-
CY62128ELL-45ZAXI.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32STSOP
- Quantity:
- Payment:
- Shipping:
Inventory:7,578
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Product details
Overview
CY62128ELL-45ZAXI from Cypress Semiconductor is a 1-Mbit (128 K × 8) CMOS static RAM with 45 ns access time, 4.5–5.5 V supply range, and industrial temperature rating (–40 °C to +85 °C). It features dual chip enables (CE1/CE2), automatic power-down mode, and TTL-level I/O compatibility-designed for battery-sensitive embedded systems requiring fast, low-power memory buffering.
For engineers reviewing the CY62128ELL-45ZAXI datasheet, CY62128ELL-45ZAXI pinout, CY62128ELL-45ZAXI application, or CY62128ELL-45ZAXI equivalent, key selection criteria include standby current ≤4 µA, tAA ≤45 ns, CE1/CE2 logic polarity, TSOP-I package footprint, and TTL input threshold compatibility with legacy microcontrollers.
Technical Context
The CY62128ELL-45ZAXI implements a 128K × 8 asynchronous SRAM architecture with complementary metal oxide semiconductor (CMOS) process technology. Its dual chip enable (CE1 LOW + CE2 HIGH) and output enable (OE) control logic enable precise bus isolation and hierarchical memory expansion in multi-chip systems.
Automatic power-down activates when CE1 is HIGH or CE2 is LOW, reducing ICC to ≤4 µA while maintaining data retention at VCC ≥2.0 V. The device supports three distinct read cycles (CE-controlled, OE-controlled, and CE/OE-controlled) with guaranteed tDOE ≤22 ns and tHZOE ≤18 ns for fast bus turnaround.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 128 K × 8 bits (1 Mbit); supports byte-wide data buses without external demultiplexing |
| Access time (tAA) | 45 ns max at VCC = 4.5–5.5 V, TA = –40 °C to +85 °C; meets timing for 12 MHz Z80/8086-compatible systems |
| Standby current (ISB2) | 4 µA max (industrial); enables >1-year battery life in always-on sensor nodes powered by CR2032 |
| Supply voltage | 4.5 V to 5.5 V; compatible with standard 5 V logic rails and regulated LDO outputs |
| I/O interface | TTL-compatible inputs (VIH ≥2.2 V, VIL ≤0.8 V); not suitable for pure CMOS-level processors requiring VIH ≥3.5 V |
| Data retention voltage | VDR ≥2.0 V; maintains stored data during brown-out or controlled power-down sequences |
| Package | 32-pin TSOP Type I (ZAXI suffix); 11.8 mm × 10.2 mm footprint, 1.0 mm height, JEDEC MO-141AC compliant |
Pinout & Package
Package: 32-pin Thin Small Outline Package (TSOP) Type I, 11.8 mm × 10.2 mm body, 0.5 mm lead pitch, RoHS-compliant lead-free finish (ZAXI suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address inputs | 17-bit address bus supporting full 128K-word decoding; A16 is MSB for 1-Mbit addressing |
| I/O0–I/O7 | Bidirectional data bus | 8-bit parallel interface; high-impedance state when CE1 HIGH or CE2 LOW or OE HIGH or WE LOW |
| CE1, CE2 | Chip enable controls | Active-low CE1 AND active-high CE2 required for selection; enables hierarchical memory banking |
| OE | Output enable | Active-low; gates output drivers only-does not affect internal power state or write capability |
| WE | Write enable | Active-low; initiates write cycle when CE1 LOW and CE2 HIGH; latches data on falling edge |
| VCC, VSS | Power supply pins | VCC = 4.5–5.5 V; VSS = ground reference; decoupling capacitor (0.1 µF) required within 5 mm of VCC/VSS |
| NC | No-connect | Pin 27 (A15) is NC in this variant; must be left unconnected per datasheet Note 1 |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low standby power | ISB2 ≤4 µA at +85 °C ensures <1 µW quiescent dissipation-critical for coin-cell-powered IoT endpoints |
| Automatic power-down | Hardware-triggered transition to sub-µA retention mode upon CE deassertion-no software or clock required |
| Pin compatibility | Drop-in replacement for CY62128B; preserves PCB layout and firmware timing margins during upgrade |
| TTL-level I/O | Guaranteed VIH ≥2.2 V and VIL ≤0.8 V enables direct interfacing with 8051, Z80, and 68000-family microcontrollers |
| Multiple package options | Same logic design offered in STSOP, SOIC, and TSOP-I-allows cost/performance trade-off without redesign |
Applications
| Industrial Data Logger | Automotive Body Control Module |
|---|---|
|
Use Scenario: Standalone environmental sensor node logging temperature/humidity every 5 seconds to nonvolatile storage via SPI flash. IC Role / Device Role / Timing Role: High-speed buffer between MCU and flash controller; absorbs burst writes during flash erase latency. Use Value: 45 ns tAA enables full 8-bit word transfer in one CPU cycle on 20 MHz 8051 derivatives; 1 µA typical ISB2 extends CR2032 battery life beyond 2 years. |
Use Scenario: Central gateway managing door lock, window lift, and lighting functions using discrete 8-bit microcontroller. IC Role / Device Role / Timing Role: Shared memory resource for real-time status exchange between safety-critical and convenience subsystems. Use Value: Dual CE inputs allow independent arbitration by two masters; –40 °C to +85 °C rating ensures operation under hood and cabin extremes. |
| Medical Patient Monitor | Point-of-Sale Terminal |
|
Use Scenario: Portable ECG device capturing 1 kHz analog samples, applying digital filtering, and storing waveform segments before BLE transmission. IC Role / Device Role / Timing Role: Zero-wait-state RAM for FIR filter coefficient storage and real-time sample buffering. Use Value: tDOE ≤22 ns guarantees immediate data availability after OE assertion-eliminating pipeline stalls in interrupt-driven sampling routines. |
Use Scenario: Retail terminal running legacy DOS-based payment software with ISA-bus peripherals and 5 V TTL logic. IC Role / Device Role / Timing Role: Memory-mapped I/O buffer for printer and magnetic stripe reader interfaces. Use Value: TTL-compatible inputs eliminate level-shifter components; 32-pin TSOP footprint fits space-constrained mainboard layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISSI IS62C1024AL-45QLI | 45 ns access, same 128K × 8 organization, but CMOS I/O levels (VIH ≥3.5 V) and higher ISB2 (10 µA max) | Requires level translation when interfacing with TTL-only MCUs; better suited for 3.3 V/5 V mixed-signal systems | Select if migrating to CMOS-compatible platforms or needing lower tRC (45 ns guaranteed under wider VCC range) |
| ON Semiconductor CAT128-45L | 45 ns access, identical pinout and TTL I/O, but rated only for industrial temp (–40 °C to +85 °C) and lacks Automotive-E option | No extended temperature support; unsuitable for under-hood automotive use cases requiring +125 °C operation | Choose for cost-sensitive industrial designs where +125 °C rating is unnecessary and Cypress supply continuity is constrained |
Compared with IS62C1024AL-45QLI and CAT128-45L, CY62128ELL-45ZAXI uniquely combines TTL compatibility, 4 µA max ISB2, and AEC-Q100 Automotive-E qualification-making it the only choice for battery-powered automotive body electronics requiring both low leakage and legacy bus support.
Availability
CY62128ELL-45ZAXI is available at Aetrix Electronics and suitable for industrial data loggers, automotive body control modules, medical patient monitors, and point-of-sale terminals requiring stable component supply across long production lifecycles.
Supply support for CY62128ELL-45ZAXI 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 consumer applications with focus on low-power innovation.
The MoBL® (More Battery Life™) SRAM product line targets portable and energy-constrained systems, delivering ultra-low ISB2 and automatic power-down without sacrificing 45 ns access performance.
FAQ
Is CY62128ELL-45ZAXI compatible with 3.3 V systems?
No. This device requires 4.5–5.5 V supply and is not rated for 3.3 V operation. Its TTL-compatible inputs accept 0–5 V signals but VCC must remain within specification. Using it below 4.5 V risks data corruption and violates maximum ratings.
What happens to data during automatic power-down mode?
Data remains fully retained as long as VCC stays ≥2.0 V and CE1 remains HIGH or CE2 remains LOW. The device draws ≤4 µA while preserving all 128K × 8 bits-no refresh or external intervention is needed during this state.
Can I leave unused address pins floating?
No. All address inputs (A0–A16) must be driven to valid TTL logic levels (≤0.8 V for LOW, ≥2.2 V for HIGH) during operation. Floating addresses cause undefined memory location access and potential bus contention.
Does the NC pin (A15) require any PCB routing?
No. Pin 27 is designated NC (no connect) and must remain unconnected on the PCB. Routing traces or placing vias to this pin violates the datasheet and may induce noise coupling into adjacent signal lines.
CY62128ELL-45ZAXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Cypress Semiconductor Corp
- Series:
- MOBL™
- Package/Case:
- 32-TFSOP (0.465", 11.80mm 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-sTSOP
CY62128ELL-45ZAXI FAQ
1.How can I place an order for CY62128ELL-45ZAXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY62128ELL-45ZAXI 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-45ZAXI reliable?
The price and inventory of CY62128ELL-45ZAXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY62128ELL-45ZAXI is usually 5 days.
3.What payment methods are accepted for CY62128ELL-45ZAXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY62128ELL-45ZAXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY62128ELL-45ZAXI?
CY62128ELL-45ZAXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY62128ELL-45ZAXI 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-45ZAXI?
For technical support, including CY62128ELL-45ZAXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY62128ELL-45ZAXI requirements.
6.How does Aetrix verify that CY62128ELL-45ZAXI is sourced from the original manufacturer or authorized distributors?
All CY62128ELL-45ZAXI 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-45ZAXI meets industry standards.
7.What is the process for return or replacement of CY62128ELL-45ZAXI?
All CY62128ELL-45ZAXI units undergo pre-shipment inspection (PSI). If there is an issue with CY62128ELL-45ZAXI, 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-45ZAXI part is unused and in its original packaging.
Return procedure for CY62128ELL-45ZAXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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