Winbond Electronics Corporation W632GG8MB09I

Overview

W632GG8MB09I from Winbond Electronics is a 2 Gb (256 MB) DDR3 SDRAM organized as 32M words × 8 banks × 8 bits, operating at DDR3-2133 speed (1066 MHz clock, CL=14, tRCD=tRP=14 ns), with industrial temperature range (−40°C to +95°C), 1.5 V supply, and VFBGA-78 (8 mm × 10.5 mm) packaging. It serves as main memory in embedded controllers, network processors, and industrial HMIs requiring high-bandwidth, low-latency synchronous DRAM.

For engineers reviewing the W632GG8MB09I datasheet, W632GG8MB09I pinout, W632GG8MB09I application, or W632GG8MB09I equivalent, key selection criteria include its DDR3-2133 timing compliance (14-14-14), industrial-grade thermal rating, on-die termination (ODT) programmability, ZQ calibration support, and SSTL_15 interface compatibility with JEDEC-standard memory controllers.

Technical Context

This DDR3 SDRAM implements an 8-bit prefetch architecture with eight independent internal banks, enabling concurrent row activation and interleaved burst access. Its differential CK/CK# input synchronizes all command/address latching at the clock crosspoint, while bi-directional DQS/DQS# strobes center-align write data and edge-align read data relative to the strobe.

The device supports programmable CAS Latency (CL = 5–14), CAS Write Latency (CWL = 5–10), additive latency (AL = 0, CL−1, CL−2), and dynamic ODT (Rtt_WR) for signal integrity optimization during write operations. It includes asynchronous RESET#, ZQ calibration via external 240 Ω resistor, and multi-purpose register (MPR) for system-level timing calibration using predefined bit patterns.

Key Specifications

Pinout & Package

VFBGA-78 package with 8×10.5 mm² footprint, 1.0 mm thickness, and 0.8 mm ball pitch. Ball assignment follows JEDEC-standard DDR3 SDRAM layout with dedicated VDD/VSS pairs, SSTL_15-compatible I/Os, and differential CK/CK#, DQS/DQS# pairs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar DDR3 SDRAM applications.

Compared with MT41K256M8RH-125:E and IS43TR16256B-125KBL, W632GG8MB09I delivers higher bandwidth (2133 vs. 1600 MT/s) at standard 1.5 V, retains identical VFBGA-78 mechanical fit, and supports full industrial thermal range without voltage compromise - making it optimal for performance-critical, thermally demanding embedded memory subsystems.

Availability

W632GG8MB09I is available at Aetrix Electronics and suitable for industrial HMIs, network packet processors, medical imaging controllers, and ruggedized edge AI gateways requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for W632GG8MB09I 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 DRAM products for industrial, automotive, and communications markets.

The W632GG8MB series belongs to Winbond's industrial-grade DDR3 SDRAM product line, designed specifically for embedded systems requiring extended temperature operation, JEDEC compliance, and robust signal integrity features like ZQ calibration and dynamic ODT.

FAQ

What is the maximum data rate supported by W632GG8MB09I?

W632GG8MB09I supports DDR3-2133 operation at 1066 MHz clock frequency, delivering 2133 MT/s transfer rate. This is validated under industrial temperature conditions (−40°C to +95°C) with CL=14, tRCD=tRP=14 ns timing. The device maintains full JEDEC AC/DC specifications across this speed grade without derating.

Does W632GG8MB09I require an external reference resistor for calibration?

Yes, W632GG8MB09I requires a 240 Ω ±1% external resistor connected between ZQ pin and VSS for ZQ calibration. This resistor calibrates both output driver impedance and on-die termination (ODT) values to maintain signal integrity across voltage and temperature variations. Calibration is initiated via ZQCL command and may be repeated periodically.

How does W632GG8MB09I handle refresh at elevated temperatures?

At case temperatures above 85°C, W632GG8MB09I requires doubled auto-refresh frequency (tREFI = 3.9 µS instead of 7.8 µS). This is achieved either by enabling Auto Self-Refresh (ASR) via MR2 bit A6 or by entering Manual Self-Refresh mode. Both methods ensure data retention integrity up to +95°C without external intervention.

Can W632GG8MB09I operate with a 1.35 V supply?

No, W632GG8MB09I is specified for 1.5 V ±0.075 V operation only. It is not a DDR3L part and does not support 1.35 V supply. Using 1.35 V will violate DC operating conditions, potentially causing initialization failure, timing violations, or data corruption. Systems requiring DDR3L must select a dedicated DDR3L-compatible part.

What is the purpose of the Multi-Purpose Register (MPR) in W632GG8MB09I?

The MPR in W632GG8MB09I provides a fixed 128-bit pattern (0x0000000000000000FFFFFFFFFFFFFFFF) readable via normal READ commands after MPR enable. It enables system-level timing calibration - particularly for measuring DQ-to-DQS skew and validating write leveling convergence - without requiring external test equipment or invasive probing.