Winbond Electronics Corporation W632GU6NB09I

Overview

W632GU6NB09I from Winbond Electronics is a 2 Gb (16M × 8 banks × 16-bit) DDR3L SDRAM operating at 1.35 V nominal supply, supporting DDR3L-2133 speed grade (14-14-14 CL-tRCD-tRP), with industrial temperature range (–40°C to +95°C), and packaged in 96-ball VFBGA (7.5 × 13 mm). It delivers high-bandwidth memory for embedded controllers, networking processors, and industrial SoC platforms requiring low-voltage, high-reliability DRAM.

For engineers reviewing the W632GU6NB09I datasheet, W632GU6NB09I pinout, W632GU6NB09I application, or W632GU6NB09I equivalent, this page provides verified timing parameters, ball configuration, ODT and ZQ calibration support, CAS Write Latency programmability, and industrial-grade thermal validation - all critical for DDR3L interface design, signal integrity planning, and JEDEC-compliant layout.

Technical Context

This DDR3L SDRAM implements an 8-bit prefetch architecture with eight internal banks, enabling concurrent bank activation and interleaved access. It supports posted CAS#, programmable additive latency (AL = 0, CL−1, CL−2), and dynamic on-die termination (Rtt_WR) for write-data signal integrity.

The device uses differential CK/CK# inputs synchronized at crossing points and bi-directional DQS/DQS# strobes edge-aligned on reads and center-aligned on writes. DLL alignment ensures precise DQ–DQS–CK timing, while asynchronous RESET# enables deterministic power-up initialization and runtime reset independent of clock state.

Key Specifications

Pinout & Package

VFBGA-96 package with 7.5 mm × 13 mm footprint, 0.8 mm ball pitch, and 1.0 mm maximum thickness. Ball assignment follows JEDEC-standard DDR3L layout with dedicated VDD, VDDQ, VSS, VSSQ, and ZQ pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS43TR16256B-213JBL and MT41K128M16HA-125:A, the W632GU6NB09I uniquely combines industrial temperature support, asynchronous RESET#, PASR, and ASR in a single 1.35 V DDR3L device - enabling robust, low-power memory operation in thermally demanding embedded systems without external calibration or refresh management.

Availability

W632GU6NB09I is available at Aetrix Electronics and suitable for industrial HMI controllers, network packet processors, medical imaging edge nodes, ruggedized IoT gateways, and automotive infotainment head units requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for W632GU6NB09I 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 W632GU6NB series belongs to Winbond's DDR3L SDRAM product line, designed specifically for embedded systems requiring low-voltage operation, extended temperature reliability, and JEDEC-compliant interface robustness without sacrificing bandwidth or feature set.

FAQ

What is the guaranteed operating temperature range for W632GU6NB09I?

The W632GU6NB09I is qualified for industrial temperature operation from –40°C to +95°C (case temperature). This rating is validated per JEDEC JESD22-A104 and includes full AC/DC parameter compliance across the entire range, with mandatory use of Auto Self-Refresh (ASR) or Manual Self-Refresh above 85°C to maintain tREFI = 3.9 µS.

Does W632GU6NB09I support both 1.35 V and 1.5 V operation?

Yes, W632GU6NB09I supports dual-voltage operation: it is fully compliant with DDR3L specifications at 1.35 V (VDD/VDDQ = 1.283 V to 1.45 V) and backward-compatible with standard DDR3 at 1.5 V ± 0.075 V. Voltage switching between modes is supported via controlled VDD ramp and mode register reprogramming, as defined in Section 11.4 of the datasheet.

How does the ZQ calibration function work on W632GU6NB09I?

W632GU6NB09I performs ZQ calibration by measuring an external 240 Ω ±1% resistor connected to the ZQ pin and adjusting internal output driver and ODT impedances accordingly. Calibration is initiated via ZQCL command (after power-up or reset) or ZQCS for periodic updates. The process achieves ±1% resistance matching and must be repeated after voltage/temperature shifts exceeding ±50 mV or ±25°C.

Can W632GU6NB09I operate with CAS Latency less than 14 at DDR3L-2133 speed?

Yes, W632GU6NB09I supports CL = 5 through 14 at DDR3L-2133. However, CL = 14 is the only setting guaranteed for full-speed operation (tCK = 0.938 ns) with tAA/tRCD/tRP = 14-14-14. Lower CL values (e.g., CL = 11 or 13) are supported but require corresponding reduction in tCK and may necessitate tighter board-level timing margins per JEDEC specification.

What is the purpose of the RESET# pin on W632GU6NB09I?

The RESET# pin on W632GU6NB09I provides asynchronous, clock-independent initialization and recovery. When asserted low, it forces the device into a known precharge-all state, clears internal registers, and triggers the power-up initialization sequence - even if CK is inactive. This capability is essential for fail-safe recovery in industrial systems experiencing brownouts or watchdog timeouts.