Winbond Electronics Corporation W66BP6NBUAFJ TR

Overview

W66BP6NBUAFJ TR from Winbond Electronics is a 2Gb LPDDR4 SDRAM in WFBGA-200 package, operating at 1.1V core/interface voltage with 4266 Mbps data rate per pin (2133 MHz clock), supporting 16-bit bus width and dual-channel architecture for mobile and embedded applications requiring high bandwidth and low power.

For engineers reviewing the W66BP6NBUAFJ TR datasheet, W66BP6NBUAFJ TR pinout, W66BP6NBUAFJ TR application, or W66BP6NBUAFJ TR equivalent, this page delivers verified LPDDR4 timing parameters, ball assignment mapping, mode register configuration, VREF training support, and thermal-aware refresh features critical for SoC memory subsystem integration.

Technical Context

This device implements LPDDR4 JEDEC JESD209-4B compliance with dual-die-package (DDP) capable architecture, supporting 8-bank operation, on-die termination (ODT) for both command/address and DQ/DQS buses, and programmable MR registers (MR0–MR40) for fine-grained timing, voltage, and thermal control.

It integrates CA VREF and DQ VREF training, write leveling, RD DQ calibration, ZQ calibration, and Partial Array Self-Refresh (PASR), enabling robust signal integrity and power optimization across temperature and voltage corners in battery-constrained platforms.

Key Specifications

Pinout & Package

W66BP6NBUAFJ TR uses a 200-ball Wafer-Level Fine-Pitch Ball Grid Array (WFBGA) package with 0.65 mm ball pitch and 10 × 10 array layout. Ball assignment follows JEDEC LPDDR4 standard pinout for single-die-package (SDP) configuration.

Key Features

Applications

Equivalent & Alternatives

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

Compared with W66BP6NBUAFJ TR, MT53E256M16D2DS-046 offers higher peak bandwidth but demands stricter PCB layout and PHY calibration; K4E6E304EC-EGCG provides pin-equivalent replacement only within Samsung-validated ecosystems, whereas W66BP6NBUAFJ TR delivers broader JEDEC-compliant flexibility with enhanced VREF training robustness.

Availability

W66BP6NBUAFJ TR is available at Aetrix Electronics and suitable for smartphone application processor memory, automotive infotainment systems, industrial edge AI cameras, and 5G CPE baseband designs requiring stable component supply, long-term lifecycle support, and full JEDEC LPDDR4 compliance.

Supply support for W66BP6NBUAFJ 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 Flash, PSRAM, and low-power DRAM for mobile, automotive, and industrial markets.

The W66BP6NB series targets LPDDR4 memory subsystems in space- and power-constrained SoC platforms, emphasizing JEDEC compliance, thermal adaptability, and production-ready signal integrity features like VREF training and write leveling.

FAQ

What is the maximum data rate supported by W66BP6NBUAFJ TR?

W66BP6NBUAFJ TR supports a maximum data rate of 4266 Mbps per pin, corresponding to a 2133 MHz differential clock frequency. This performance level meets JEDEC LPDDR4 JESD209-4B specification and enables 8.5 GB/s aggregate bandwidth on its 16-bit bus. The W66BP6NBUAFJ TR achieves this rate under 1.1 V supply and industrial temperature conditions with appropriate PHY training.

Does W66BP6NBUAFJ TR support on-die termination (ODT)?

Yes, W66BP6NBUAFJ TR supports configurable on-die termination for both command/address (CA) and data (DQ/DQS/DMI) buses. ODT states are controlled via MR registers (MR1, MR2, MR11), allowing dynamic adjustment during operation. The W66BP6NBUAFJ TR implements asynchronous ODT for CA and synchronous ODT for DQ, enabling optimized signal integrity across read/write cycles and power states.

How does W66BP6NBUAFJ TR handle thermal variations during operation?

W66BP6NBUAFJ TR integrates an on-die temperature sensor and thermal offset compensation logic that dynamically adjusts refresh intervals based on real-time die temperature. This feature ensures data retention reliability across the full -25°C to +85°C operating range without requiring external thermal monitoring. The W66BP6NBUAFJ TR implements PASR to further reduce self-refresh current in thermally stable conditions.

Is W66BP6NBUAFJ TR compatible with LPDDR4x controllers?

W66BP6NBUAFJ TR is fully compliant with JEDEC JESD209-4B LPDDR4 specifications and operates at 1.1 V, making it functionally compatible with LPDDR4x controllers that support backward compatibility mode. However, it does not support the 0.6 V I/O voltage of true LPDDR4x devices. System designers must configure the controller to use LPDDR4 mode when interfacing with W66BP6NBUAFJ TR.

What training sequences are required to initialize W66BP6NBUAFJ TR?

Initialization of W66BP6NBUAFJ TR requires CA VREF training, DQ VREF training, command bus training, write leveling, and RD DQ calibration - all defined in the official datasheet. These sequences are executed by the host memory controller during boot and ensure timing closure at 4266 Mbps. The W66BP6NBUAFJ TR provides dedicated MPC commands and MR register access to support each step without external components.