Infineon Technologies CY62146G30-45BVXI

Overview

CY62146G30-45BVXI from Cypress Semiconductor is a 4-Mbit (256K × 16) MoBL® Static RAM with embedded single-bit error-correcting code (ECC), operating at 45 ns access time across 2.2–3.6 V supply, featuring ERR output pin, ultra-low 3.5 µA typical standby current, and TTL-compatible I/Os for industrial memory subsystems in medical instrumentation and avionics data loggers.

For engineers reviewing the CY62146G30-45BVXI datasheet, CY62146G30-45BVXI pinout, CY62146G30-45BVXI application, or CY62146G30-45BVXI equivalent, key selection criteria include ECC-enabled reliability, dual-chip-enable support, 48-ball VFBGA package compatibility, and voltage-flexible operation across 2.2–3.6 V rails with guaranteed 45 ns timing.

Technical Context

This SRAM integrates on-die ECC encoding/decoding logic that detects and corrects single-bit errors during read cycles, signaled via dedicated ERR output. It supports both single-CE (CE active low) and dual-CE (CE1 low + CE2 high) addressing modes, enabling flexible memory mapping in multi-bank systems.

The device implements byte-level write control via BHE (I/O8–I/O15) and BLE (I/O0–I/O7), maintains 1.0-V data retention at VCC = 0 V, and operates across three discrete voltage ranges - 1.65–2.2 V, 2.2–3.6 V, and 4.5–5.5 V - with full AC/DC specs validated only in the 2.2–3.6 V and 4.5–5.5 V bands.

Key Specifications

Pinout & Package

48-ball VFBGA (6 mm × 8 mm, 0.5 mm pitch), RoHS-compliant, industrial-grade packaging with exposed thermal pad (not electrically connected). Pinout corresponds to CY62146GE dual-CE configuration with ERR output.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS61WV25616EDBLL-10MLI and AS6C4008-55ZIN, CY62146G30-45BVXI uniquely delivers on-die ECC with real-time ERR signaling, 2.2–3.6 V operation, and 1.0-V data retention - making it the sole choice for safety-aware, low-voltage, single-chip ECC memory designs.

Availability

CY62146G30-45BVXI is available at Aetrix Electronics and suitable for avionics data loggers, medical diagnostic imaging buffers, and industrial PLC configuration memory requiring stable component supply across extended temperature and voltage ranges.

Supply support for CY62146G30-45BVXI 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, with emphasis on low-power, radiation-tolerant, and functional-safety architectures.

CY62146G series belongs to Cypress's MoBL® (Mobile Binary Logic) SRAM product line, engineered specifically for battery-powered and mission-critical systems demanding ECC protection, ultra-low standby power, and multi-voltage interoperability.

FAQ

Does CY62146G30-45BVXI support automatic write-back after error correction?

No. The device performs single-bit error correction during read cycles but does not automatically rewrite the corrected data back to the memory array. System firmware must initiate a write cycle to update the corrected word if permanent repair is required. This behavior is explicitly documented in Note 2 of the datasheet.

What is the function of the ERR pin, and how is it electrically driven?

The ERR pin is an open-drain output that asserts HIGH during detection and correction of a single-bit error in the accessed 16-bit word. It requires an external pull-up resistor (typically 4.7 kΩ to VCC) and remains inactive (HIGH-Z) when no error is present. Its timing aligns with the end of the read access cycle.

Can CY62146G30-45BVXI operate reliably at 3.3 V?

Yes. The 2.2–3.6 V VCC range is fully specified and tested at 3.3 V. All AC/DC parameters - including 45 ns access time, 3.5 µA standby current, and ECC functionality - are guaranteed at this voltage. Operation between 3.6 V and 4.5 V is not characterized.

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

Yes. The "X" suffix in CY62146G30-45BVXI denotes lead-free (Pb-free) construction, and the device complies with RoHS Directive 2011/65/EU. The package uses matte tin surface finish on solder balls and meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL-3) requirements.