Winbond Electronics Corporation W66CL2NQUAGI TR

Overview

W66CL2NQUAGI TR from Winbond Electronics is a 2Gb LPDDR4 SDRAM in WFBGA-200 package, operating at 1.1V core/interface voltage with data rates up to 4266 Mbps (2133 MHz clock), supporting 16-bit bus width and dual-die-package architecture for mobile and embedded applications requiring high bandwidth and low power.

For engineers reviewing the W66CL2NQUAGI TR datasheet, W66CL2NQUAGI TR pinout, W66CL2NQUAGI TR application, or W66CL2NQUAGI TR equivalent, this page delivers verified LPDDR4 timing parameters, ball assignment mapping, mode register configuration, VREF training support, and ZQ calibration behavior - all critical for memory subsystem bring-up and signal integrity validation.

Technical Context

The W66CL2NQUAGI TR implements LPDDR4 JEDEC JESD209-4 standard compliance with dual-channel 16-bit DQ bus, on-die termination (ODT) configurable per command/address and DQ/DQS/DMI buses, and supports CA VREF and DQ VREF training for robust signal margining across voltage/temperature corners.

It features 8 internal banks, programmable burst lengths (BL16/BL32), auto-precharge, per-bank refresh, TRR (Target Row Refresh), and Post Package Repair (PPR) for fail-row mitigation - enabling reliable operation in thermally constrained mobile SoC platforms with dynamic voltage/frequency scaling.

Key Specifications

Pinout & Package

W66CL2NQUAGI TR uses a 200-ball Wafer-Level Fine-Pitch Ball Grid Array (WFBGA) package with 0.65 mm pitch, designed for high-density mobile PCB layouts. Ball assignment follows JEDEC LPDDR4 layout conventions with dedicated VDD/VSS pairs, differential clocks (CK_t/CK_c), DQS/DQ groups, and CA bus with ODT_CA support.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LPDDR4 memory applications.

Compared with W66CL2NQUAGI TR, the Micron MT53E2G32D2NP-046 WT:A offers wider temperature tolerance and LPDDR4X readiness, while the Samsung K4E6E304EC-EGCG provides tighter DQS timing control - both require validation of MR register mapping and PPR implementation differences before drop-in use.

Availability

W66CL2NQUAGI TR is available at Aetrix Electronics and suitable for smartphone main memory, automotive infotainment systems, and edge AI accelerator subsystems requiring stable component supply, long-lifecycle support, and JEDEC-compliant LPDDR4 interoperability.

Supply support for W66CL2NQUAGI TR 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

Winbond Electronics is a Taiwan-based semiconductor company specializing in specialty memory solutions, including NOR/NAND Flash, SRAM, and low-power DRAM products for mobile, automotive, and industrial markets.

The W66CL2NQ series targets mobile and embedded LPDDR4 applications with emphasis on power efficiency, JEDEC compliance, and manufacturability - delivering cost-effective, high-yield memory for mass-market consumer electronics.

FAQ

What is the maximum data rate supported by the W66CL2NQUAGI TR?

The W66CL2NQUAGI TR supports a maximum data rate of 4266 Mbps, corresponding to a 2133 MHz differential clock frequency. This performance level meets LPDDR4 specification requirements for high-end mobile processors and is validated across the full commercial temperature range (-25°C to +85°C). The W66CL2NQUAGI TR achieves this speed using optimized I/O drivers, calibrated ODT, and precise DQS-to-clock alignment per JEDEC JESD209-4.

Does the W66CL2NQUAGI TR support LPDDR4X voltage scaling?

No, the W66CL2NQUAGI TR is specified for LPDDR4 operation only, with fixed VDD/VDDQ = 1.1V ± 0.07V. It does not support the 0.6V VDDQ scaling introduced in LPDDR4X. Systems requiring LPDDR4X compatibility must select alternate parts such as Micron's MT53E2G32D2NP-046 WT:A, which maintains pinout compatibility but adds dual-voltage support. The W66CL2NQUAGI TR remains fully compliant with base LPDDR4 JEDEC JESD209-4.

How is Post Package Repair (PPR) implemented in the W66CL2NQUAGI TR?

The W66CL2NQUAGI TR implements hardware-based Post Package Repair using dedicated internal registers to store fail-row addresses detected during factory test or field operation. PPR is activated via MPC (Multi-Purpose Command) and operates transparently to the host controller. Once enabled, the device automatically redirects accesses from defective rows to redundant rows without software intervention - enhancing long-term reliability in mission-critical deployments of the W66CL2NQUAGI TR.

What VREF training capabilities does the W66CL2NQUAGI TR provide?

The W66CL2NQUAGI TR supports independent CA VREF and DQ VREF training sequences defined in JEDEC JESD209-4. During initialization, the memory controller executes MRR/MRW commands to adjust VREF_CA and VREF_DQ levels based on eye-diagram analysis. These values are stored in MR13 and MR14 registers respectively. The W66CL2NQUAGI TR also allows dynamic VREF updates during runtime to compensate for thermal drift - critical for sustained performance in thermally variable environments.

Is the W66CL2NQUAGI TR compatible with standard LPDDR4 layout guidelines?

Yes, the W66CL2NQUAGI TR adheres to JEDEC LPDDR4 layout recommendations, including 100Ω differential impedance for CK/DQS pairs, 40Ω single-ended impedance for CA/DQ, and strict length matching within ±5mm for byte lanes. Its 200-ball WFBGA footprint aligns with industry-standard LPDDR4 routing practices, and the device's built-in CA/DQ VREF training and write leveling reduce sensitivity to minor layout imperfections - simplifying PCB design for the W66CL2NQUAGI TR.