Infineon Technologies CY62148ELL-45ZSXIT

Overview

CY62148ELL-45ZSXIT from Infineon Technologies (formerly Cypress) is a 4-Mbit (512K × 8) CMOS static RAM with 45 ns access time, 4.5–5.5 V supply range, and ultra-low standby current (2.5 µA typical). It features automatic CE-controlled power-down, TTL-compatible I/O, and is designed for battery-sensitive portable systems requiring fast, reliable non-volatile data retention during sleep modes.

For engineers reviewing the CY62148ELL-45ZSXIT datasheet, CY62148ELL-45ZSXIT pinout, CY62148ELL-45ZSXIT application, or CY62148ELL-45ZSXIT equivalent, key selection criteria include industrial-grade 45 ns read timing, 7 µA max standby current at –40°C to +85°C, TSOP II 32-pin package compatibility, and MoBL® low-power architecture for extended runtime in handheld instrumentation and embedded controllers.

Technical Context

The device implements a full CMOS 512K × 8 memory array with independent address decoding, sense amplifiers, and input/output buffers. Its automatic power-down logic activates when CE is HIGH and all inputs are at valid CMOS levels, reducing ICC to ≤7 µA without external control signals.

Timing behavior is defined by strict AC parameters: tRC = 45 ns, tAA = 45 ns, tDOE = 22 ns, and tPD = 45 ns. The I/O pins enter high-impedance state during deselection (CE HIGH), output disable (OE HIGH), or write cycles (WE LOW), ensuring clean bus sharing in multi-device systems.

Key Specifications

Pinout & Package

Package: 32-pin Thin Small Outline Package (TSOP II), 12 × 20 mm body, 0.5 mm pitch, JEDEC MO-143AC compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS61LV5128AL-10TLI and CY62148EV-45ZSXIT, the CY62148ELL-45ZSXIT provides optimal balance of 5 V compatibility, industrial temperature support, and MoBL® power efficiency-making it ideal for cost-sensitive, battery-constrained industrial and portable designs where automotive certification is unnecessary.

Availability

CY62148ELL-45ZSXIT is available at Aetrix Electronics and suitable for portable medical monitors, industrial PLC data loggers, and smart energy meters requiring stable component supply across long production lifecycles.

Supply support for CY62148ELL-45ZSXIT 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

Infineon Technologies is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, sensing, connectivity, and memory solutions for industrial, automotive, and IoT markets.

This part belongs to the MoBL® (More Battery Life™) SRAM product line, engineered specifically for ultra-low-power portable electronics where extended battery runtime and rapid wake-from-sleep responsiveness are critical design constraints.

FAQ

Is CY62148ELL-45ZSXIT compatible with 3.3 V microcontrollers?

No. This device requires 4.5–5.5 V supply and is TTL-level compatible-not 3.3 V CMOS. Its VIH minimum is 2.2 V, but VOH maximum is 3.4 V at 5.5 V, which may fail to meet 3.3 V receiver thresholds. For 3.3 V systems, consider the CY62148EV-45ZSXIT variant with level-shifting support or alternate 3.3 V SRAMs like ISSI IS61WV5128BLL.

What happens to data during power-down mode?

Data remains fully retained as long as VCC stays ≥ 2.0 V and CE remains HIGH at CMOS-valid levels. The device draws ≤7 µA in this state and resumes normal operation within 45 ns after CE goes LOW, with no initialization delay or data loss.

Can I/O pins be left floating during standby?

No. While CE HIGH places outputs in high-impedance state, input pins (A0–A18, OE, WE) must be held at valid logic levels-either tied to VCC or GND-to prevent increased leakage or unintended wake-up. Floating inputs may cause erratic behavior or elevated ISB2 current.

Does this SRAM require an external clock or refresh circuitry?

No. As a static RAM, CY62148ELL-45ZSXIT has no refresh requirement. It retains data indefinitely as long as power is applied and CE is HIGH (standby) or valid read/write cycles are executed-eliminating refresh overhead and timing complexity found in DRAMs.