Winbond Electronics Corporation W632GU6NB-12 TR

Overview

W632GU6NB-12 TR from Winbond is a 2 Gb (16M × 8 banks × 16-bit) DDR3L SDRAM operating at 1.35 V nominal supply, compliant with DDR3L-1600 (11-11-11) timing, supporting CAS Latency 5–11 and CWL 5–8, and designed for high-bandwidth memory subsystems in industrial embedded systems requiring extended temperature operation up to 95°C.

For engineers reviewing the W632GU6NB-12 TR datasheet, W632GU6NB-12 TR pinout, W632GU6NB-12 TR application, or W632GU6NB-12 TR equivalent, key selection criteria include its VFBGA-96 package, 1.35 V low-voltage operation with 1.5 V backward compatibility, programmable ODT and ZQ calibration, and support for write leveling and multi-purpose register (MPR)-based system timing calibration.

Technical Context

This DDR3L SDRAM implements an 8-bit prefetch architecture with eight internal banks, enabling concurrent bank activation and interleaved burst access. It uses differential CK/CK# inputs for command/address latching and differential DQS/DQS# for source-synchronous data transfer, with DLL alignment of DQ and DQS edges to CK.

Functional features include asynchronous RESET#, programmable mode registers (MR0–MR3) for CAS latency, additive latency, CWL, PASR, ASR, and dynamic ODT; ZQ calibration for output driver and ODT impedance tuning; and MPR readout for system-level timing calibration sequences.

Key Specifications

Pinout & Package

VFBGA-96 package with 7.5 mm × 13 mm footprint and 0.8 mm ball pitch; RoHS-compliant, lead-free construction.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar DDR3L SDRAM applications.

Compared with W632GU6NB-12 TR, IS43TR16256B-125KBL offers wider temperature coverage but higher active current, while MT41K128M16JT-125K provides automotive-grade reliability at the cost of layout incompatibility - making W632GU6NB-12 TR optimal for cost-sensitive industrial designs within 0–95°C.

Availability

W632GU6NB-12 TR is available at Aetrix Electronics and suitable for industrial HMI controllers, network edge routers, medical imaging gateways, and automated test equipment requiring stable component supply, long-lifecycle availability, and JEDEC-compliant DDR3L interoperability.

Supply support for W632GU6NB-12 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 serial NOR/NAND Flash, DRAM, and mobile RAM products for industrial, communications, and consumer markets.

The W632GU6NB-12 TR belongs to Winbond's DDR3L SDRAM product line, engineered for low-power, high-reliability memory subsystems in thermally constrained industrial and networking applications demanding extended temperature operation and robust signal integrity.

FAQ

What is the operating voltage range for W632GU6NB-12 TR?

W632GU6NB-12 TR operates at 1.35 V nominal with a specified range of 1.283 V to 1.45 V for both VDD and VDDQ. It is backward compatible to 1.5 V ± 0.075 V, allowing use in legacy DDR3 systems without hardware modification. This dual-voltage support simplifies migration paths and ensures interoperability across mixed-memory designs.

Does W632GU6NB-12 TR support write leveling and how is it implemented?

Yes, W632GU6NB-12 TR supports hardware-assisted write leveling via dedicated command sequences and MPR readback. The DRAM internally adjusts DQS-to-CK delay based on feedback from the memory controller, using the MPR to return a known calibration pattern. This enables precise skew compensation without firmware overhead, critical for reliable 1600 MT/s operation on dense PCBs.

What is the meaning of the "-12" suffix in W632GU6NB-12 TR?

The "-12" suffix in W632GU6NB-12 TR denotes the DDR3L-1600 speed grade with CL-nRCD-nRP = 11-11-11 timing and guaranteed operation from 0°C to 95°C. It corresponds to a maximum clock frequency of 800 MHz (1600 MT/s) and minimum tRCD/tRP/tAA values of 13.75 ns. The "TR" indicates tape-and-reel packaging for automated assembly.

How does W632GU6NB-12 TR handle refresh at elevated temperatures?

At temperatures above 85°C, W632GU6NB-12 TR requires doubled refresh rate (tREFI = 3.9 µS instead of 7.8 µS) to maintain data retention. This is achieved either by enabling Auto Self-Refresh (ASR) via MR2 bit A6 or by entering Manual Self-Refresh mode. The device supports both methods without external intervention, ensuring data integrity in thermally demanding industrial deployments.

Can W632GU6NB-12 TR be used in place of standard DDR3 (1.5 V) SDRAMs?

Yes, W632GU6NB-12 TR is fully backward compatible with 1.5 V DDR3 systems. Its input thresholds and timing parameters meet JEDEC DDR3 specifications when operated at 1.5 V ± 0.075 V. However, VDD/VDDQ must be supplied at the same voltage level - mixing 1.35 V and 1.5 V supplies is not supported. System-level validation is recommended for timing margin assurance.