Infineon Technologies CY62146GE30-45BVXIT

Overview

CY62146GE30-45BVXIT from Cypress Semiconductor is a 4-Mbit (256K × 16) MoBL® SRAM with embedded single-bit error-correcting code (ECC), 45 ns access time, 2.2–3.6 V supply range, and ERR output pin for real-time error detection/correction - used in industrial control memory buffers requiring data integrity under radiation-prone or long-term reliability conditions.

For engineers reviewing the CY62146GE30-45BVXIT datasheet, CY62146GE30-45BVXIT pinout, CY62146GE30-45BVXIT application, or CY62146GE30-45BVXIT equivalent, key selection criteria include ECC-enabled read-cycle error signaling, dual-voltage operation (2.2–3.6 V), 45 ns timing at full speed, ultra-low 3.5 µA typical standby current, and VFBGA-48 package compatibility with high-density PCB layouts.

Technical Context

This SRAM implements on-die ECC encoding/decoding logic that detects and corrects single-bit errors during every read cycle, with dedicated ERR pin assertion (HIGH) indicating correction event - no automatic write-back support. Memory array is organized as 256K words × 16 bits, accessed via 18-bit address bus (A0–A17) and bidirectional 16-bit I/O (I/O0–I/O15).

It supports both single CE (CE active LOW) and dual CE (CE1 LOW + CE2 HIGH) addressing modes, byte-level writes via BHE/BLE controls, and TTL-compatible I/O levels across its rated voltage ranges. Standby power is minimized using deep sleep circuitry enabling 1.0-V data retention without refresh.

Key Specifications

Pinout & Package

Package: 48-ball Very Thin Fine-Pitch Ball Grid Array (VFBGA), 6 mm × 8 mm, 0.5 mm pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS61WV25616EDBLL-10MLI and N25S80A16T, CY62146GE30-45BVXIT uniquely delivers hardware-accelerated, cycle-accurate single-bit error correction with visible ERR signaling - essential for functional safety systems where undetected memory faults violate ASIL-B or SIL-2 requirements.

Availability

CY62146GE30-45BVXIT is available at Aetrix Electronics and suitable for industrial PLC memory buffers, medical diagnostic data caches, and railway signaling controllers requiring stable component supply with guaranteed ECC functionality and long-term lifecycle support.

Supply support for CY62146GE30-45BVXIT 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 aerospace applications.

CY62146GE belongs to the MoBL® (Mobile Bit-Library) SRAM product line, engineered for ultra-low-power, ECC-enhanced volatile memory in mission-critical embedded systems operating across extended temperature and voltage ranges.

FAQ

Does CY62146GE30-45BVXIT support automatic error correction write-back?

No. The device performs single-bit error correction during read cycles and asserts the ERR pin, but does not automatically rewrite the corrected data back to the memory array. Host firmware must initiate any corrective write if persistent correction is required - this design avoids unintended write cycles during read-only operations.

What is the function of the ERR pin during normal (error-free) operation?

During error-free reads, the ERR pin remains in high-impedance (HI-Z) state when not actively driven. It is only asserted HIGH (active) for the duration of the read cycle in which a single-bit error is detected and corrected - no pull-up or pull-down is required externally unless interfacing with open-drain logic.

Can CY62146GE30-45BVXIT operate at 1.8 V?

No. This variant (CY62146GE30-45BVXIT) is rated for 2.2 V to 3.6 V only. The 1.65–2.2 V voltage range applies only to CY62146G(E)18 variants. Operation below 2.2 V violates datasheet specifications and may result in timing violations or ECC failure.

Is the VFBGA-48 package lead-free and RoHS-compliant?

Yes. The "VXIT" suffix indicates a Pb-free, RoHS-compliant 48-ball VFBGA package with NiPdAu surface finish, qualified per JEDEC J-STD-020 moisture sensitivity level 3 (MSL-3), and compatible with standard reflow profiles up to 260 °C peak.