Infineon Technologies CY62148GN-45SXIT

Overview

CY62148GN-45SXIT from Infineon Technologies (formerly Cypress) is a 4-Mbit (512K × 8) CMOS static RAM with 45 ns access time, operating across dual voltage ranges (2.2–3.6 V and 4.5–5.5 V), ultra-low standby current (typ. 3.5 µA), and automatic CE-controlled power-down. It serves as main or buffer memory in portable industrial controllers requiring deterministic timing and battery longevity.

For engineers reviewing the CY62148GN-45SXIT datasheet, CY62148GN-45SXIT pinout, CY62148GN-45SXIT application, or CY62148GN-45SXIT equivalent, key selection criteria include verified 45 ns read/write cycle timing, dual-voltage compatibility, TSOP II/SOIC package footprint, MoBL® low-power architecture, and industrial-grade temperature support (–40 °C to +85 °C).

Technical Context

This SRAM implements a fully static, asynchronous interface with independent chip enable (CE), output enable (OE), and write enable (WE) controls. Its 19-bit address bus (A0–A18) accesses 524,288 × 8-bit locations without refresh, and all I/O pins enter high-impedance state during deselection (CE HIGH), output disable (OE HIGH), or active write (WE LOW).

The device uses CMOS circuitry optimized for speed–power trade-off, featuring automatic power-down when CE is deasserted - reducing ICC by >99% - and guaranteed data retention down to VCC = 1.0 V with ICCDR ≤ 13 µA. Standby current ISB2 is specified at 3.5 µA (typ) / 8.7 µA (max) under full CMOS input conditions.

Key Specifications

Pinout & Package

Available in Pb-free 32-pin thin small outline package (TSOP II) with 0.5 mm pitch and standard SOJ-32 mechanical dimensions. Pinout conforms to JEDEC MO-141BA.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS62WV5128BLL-45NLI and CAT24C512WI-GT3, CY62148GN-45SXIT uniquely delivers dual-voltage parallel SRAM performance with sub-µA standby, making it irreplaceable in battery-critical, mixed-rail, or deterministic-latency systems.

Availability

CY62148GN-45SXIT is available at Aetrix Electronics and suitable for portable data loggers, industrial PLC I/O modules, and smart electricity meters requiring stable component supply across extended product lifecycles.

Supply support for CY62148GN-45SXIT 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 applications.

CY62148GN belongs to the MoBL® (More Battery Life™) SRAM product line, engineered specifically for ultra-low-power, high-reliability embedded systems where deterministic timing and multi-year battery operation are mandatory.

FAQ

Is CY62148GN-45SXIT pin-compatible with CY62148EV-45ZSXI?

No. CY62148GN-45SXIT uses a 32-pin TSOP II package with standard SOJ-32 pinout, while CY62148EV-45ZSXI is in a 32-pin SOIC package with different lead pitch and thermal pad configuration. Mechanical mounting and PCB footprint differ; electrical pin functions match, but board redesign is required for substitution.

Does CY62148GN-45SXIT support true 2.5 V operation?

Yes. The device is fully specified for 2.2 V to 3.6 V operation, including AC timing and DC parameters at 2.5 V nominal. All switching characteristics (e.g., tRC = 45 ns) and standby current (ISB2 ≤ 8.7 µA) are guaranteed across this range per datasheet Rev. *D, page 4.

Can CY62148GN-45SXIT retain data during complete power loss?

No. It is a volatile SRAM and requires continuous VCC ≥ 1.0 V for data retention. When VCC drops below 1.0 V, data is lost within nanoseconds. For nonvolatile storage, external backup capacitors or companion EEPROM/FRAM must be used - the device itself does not retain data without power.

What is the maximum clock frequency supported for burst reads?

CY62148GN-45SXIT is asynchronous and has no internal clock. Its maximum effective throughput is determined by tRC = 45 ns, yielding up to 22.2 million read cycles per second. Sustained burst reads require external address sequencing logic; no internal address counter or clock input is provided.