Infineon Technologies CY62148DV30LL-55SXI

Overview

CY62148DV30LL-55SXI from Cypress Semiconductor is a 4-Mbit (512 K × 8) MoBL® CMOS static RAM with 55 ns access time, 2.2 V–3.6 V supply voltage, and industrial temperature range (–40 °C to +85 °C). It delivers ultra-low active current (1.5 mA at 1 MHz), automatic CE-controlled power-down, and high-impedance I/O during deselect or write, targeting battery-powered portable memory subsystems.

For engineers reviewing the CY62148DV30LL-55SXI datasheet, CY62148DV30LL-55SXI pinout, CY62148DV30LL-55SXI application, or CY62148DV30LL-55SXI equivalent, key selection criteria include verified 55 ns read/write timing, dual standby current specs (ISB1/ISB2 ≤ 8 µA), SOIC-32 package compatibility, and pin-for-pin equivalence with CY62148CV25/CV30/CV33 for drop-in replacement in legacy SRAM designs.

Technical Context

This SRAM implements a full CMOS 512K × 8 asynchronous architecture with independent CE, OE, and WE controls enabling flexible bus interfacing. Its automatic power-down logic activates when CE is HIGH, forcing all I/O into high-impedance and reducing ICC to sub-µA levels without external control signals.

Timing compliance is defined across two primary cycles: Address-Controlled Read (tRC = 55 ns, tAA = 55 ns) and OE-Controlled Read (tDOE = 25 ns, tHZOE = 20 ns), with write cycle tWC = 55 ns and data setup/hold referenced to the terminating edge of CE or WE per JEDEC-compliant waveform definitions.

Key Specifications

Pinout & Package

Package: 32-pin Small-outline integrated circuit (SOIC), Pb-free, JEDEC MS-012AC compliant, 0.300-inch body width, 1.27 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS62WV5128BLL-55NLI and R1LV5256ES-55SI, CY62148DV30LL-55SXI uniquely combines 2.2 V operation, sub-10 µA standby, and guaranteed pin compatibility with legacy Cypress SRAMs-making it the sole option for drop-in voltage-scaling upgrades in field-deployed equipment.

Availability

CY62148DV30LL-55SXI is available at Aetrix Electronics and suitable for portable medical monitors, industrial PLC data buffers, and wireless sensor node gateways requiring stable component supply across extended product lifecycles.

Supply support for CY62148DV30LL-55SXI 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, with headquarters in San Jose, CA.

The MoBL® (More Battery Life™) SRAM product line targets ultra-low-power portable electronics, emphasizing sub-mA active current, automatic power-state transitions, and wide-VCC operation without performance trade-offs.

FAQ

What is the minimum VCC required to retain data in CY62148DV30LL-55SXI?

Data retention is guaranteed down to 1.5 V (VDR), as specified in the Data Retention Characteristics table. At this voltage, ICCDR remains ≤ 6 µA with CE HIGH, allowing operation from backup sources such as CR2032 coin cells or supercapacitors during main power failure. Full functionality resumes immediately upon VCC restoration above 2.2 V.

Does CY62148DV30LL-55SXI support true bidirectional I/O without external direction control?

Yes. The I/O0–I/O7 pins operate as true bidirectional data lines controlled solely by internal CE, OE, and WE states. During read (CE LOW, OE LOW, WE HIGH), outputs drive; during write (CE LOW, WE LOW), inputs sample; and during deselect (CE HIGH), all pins enter high-impedance-no external transceiver or direction pin is needed.

How does the automatic power-down feature interact with OE and WE during CE deassertion?

When CE transitions HIGH, the device enters standby regardless of OE or WE state. I/O pins go high-impedance, core logic powers down, and ICC drops to ISB2 level within 55 ns. OE and WE become irrelevant until CE returns LOW; no timing sequence or hold requirement applies to those signals during CE deassertion.

Can CY62148DV30LL-55SXI be used in place of CY62148CV33 in an existing design?

Yes-CY62148DV30LL-55SXI is explicitly pin-compatible and functionally equivalent to CY62148CV33, with identical SOIC-32 pinout and AC/DC specifications. The key upgrade is extended VCC range (2.2–3.6 V vs. 3.0–3.6 V), enabling operation at lower voltages without redesign, provided timing margins accommodate the same 55 ns access.