Infineon Technologies CY62128BLL-70ZXI

Overview

CY62128BLL-70ZXI from Cypress Semiconductor is a 128K × 8 (131,072 × 8) CMOS static RAM with 70 ns access time, 4.5–5.5 V operation, and industrial temperature range (–40°C to +85°C). It features dual chip enables (CE1 active-low, CE2 active-high), TTL-compatible I/O, automatic power-down, and low standby current (15 µA max). Used in embedded controllers for nonvolatile data buffering where fast random-access retention is required.

For engineers reviewing the CY62128BLL-70ZXI datasheet, CY62128BLL-70ZXI pinout, CY62128BLL-70ZXI application, or CY62128BLL-70ZXI equivalent, key selection criteria include access timing consistency across temperature, CE/OE-controlled three-state output behavior, low ISB2 standby current under CMOS input conditions, and TSOP-I package compatibility with high-density PCB layouts.

Technical Context

The CY62128BLL-70ZXI implements a fully static 131,072 × 8 memory array with row/column decoding, sense amplifiers, and input/output buffers. Its dual CE architecture (CE1 active-low, CE2 active-high) enables hierarchical memory expansion without external logic, while OE-controlled output directionality supports bidirectional data bus sharing.

Power management relies on automatic CE-driven power-down: when CE1 is HIGH or CE2 is LOW, ICC drops to ≤15 µA (ISB2, CMOS inputs), reducing active power by >75%. All timing parameters-including tAA (70 ns), tHZOE (25 ns), and tPD (70 ns)-are guaranteed over –40°C to +85°C at VCC = 4.5–5.5 V.

Key Specifications

Pinout & Package

Package: 32-pin TSOP Type I (Z32), Pb-free, 10.16 mm × 20.95 mm body, 0.5 mm pitch, JEDEC MO-141AC compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar static RAM applications.

Compared with IS62C128AL-70QLI and MC68HC128L70, CY62128BLL-70ZXI uniquely delivers 5 V operation, 70 ns timing, and 15 µA ISB2 in a Pb-free TSOP-I package-making it optimal for new 5 V embedded designs requiring minimal power and proven industrial reliability.

Availability

CY62128BLL-70ZXI is available at Aetrix Electronics and suitable for industrial PLCs, automotive ECUs, medical infusion pumps, and telecom line cards requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CY62128BLL-70ZXI 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 mixed-signal ICs for industrial, automotive, and communications infrastructure.

The CY62128B MoBL® family targets low-power, high-speed parallel SRAM applications in space-constrained embedded systems-emphasizing guaranteed timing, wide VCC tolerance, and robust CE-controlled power management.

FAQ

What is the maximum clock frequency supported by CY62128BLL-70ZXI?

CY62128BLL-70ZXI is a static RAM and does not use a clock signal. Its performance is defined by asynchronous timing parameters: tRC (70 ns read cycle time) sets the maximum sustained access rate at ~14.3 MHz. Bus turnaround and controller overhead determine practical throughput, not an internal clock.

Can CY62128BLL-70ZXI operate with a 3.3 V supply?

No. The CY62128BLL-70ZXI requires 4.5 V to 5.5 V for guaranteed operation. At 3.3 V, VIH thresholds (2.2 V min) and output drive strength fall outside specification, risking read failures and increased standby leakage. Use ISSI IS62C128AL-70QLI for 3.3 V systems.

How does the dual CE architecture simplify memory expansion?

CE1 (active-low) and CE2 (active-high) allow direct connection to address decoder outputs-e.g., using a 74LS138 to generate /CS0 (→ CE1) and /CS1 (→ CE2) for two 128K banks. No additional NAND gates or inverters are needed, reducing board area and signal propagation delay.

Is CY62128BLL-70ZXI RoHS-compliant and halogen-free?

Yes. The "X" suffix in ZXI denotes Pb-free (RoHS-compliant) construction. Cypress documentation confirms compliance with JEDEC JS709A (halogen-free) and IPC-1752A (material declaration), with brominated flame retardants excluded from molding compound and laminate.