Winbond Electronics Corporation W632GU6MB12I TR

Overview

W632GU6MB12I TR from Winbond is a 2G-bit DDR3L SDRAM organized as 16M × 8 banks × 16 bits, operating at 1.35 V nominal supply with industrial temperature support (–40°C to +95°C), compliant with DDR3L-1600 (11-11-11) timing, and packaged in a 96-ball VFBGA (7.5 × 13 mm). It delivers high-bandwidth memory for embedded controllers and networking SoCs requiring low-voltage, high-density DRAM.

For engineers reviewing the W632GU6MB12I TR datasheet, W632GU6MB12I TR pinout, W632GU6MB12I TR application, or W632GU6MB12I TR equivalent, this page provides verified electrical parameters, JEDEC-compliant timing behavior, industrial-grade thermal validation, ball mapping, and direct alternatives for DDR3L-1600 memory substitution in space-constrained designs.

Technical Context

This DDR3L SDRAM implements an 8-bit prefetch architecture with eight internal banks, supporting programmable CAS Latency (CL = 5–11), CAS Write Latency (CWL = 5–8), and additive latency (AL = 0, CL−1, CL−2). Its DLL-aligned DQ/DQS timing ensures precise source-synchronous data capture at up to 800 MHz clock frequency (1600 MT/s).

The device supports ZQ calibration for output driver and ODT impedance tuning, dynamic ODT (Rtt_WR) during writes, multi-purpose register (MPR) readout for system-level timing calibration, and write leveling for per-lane skew compensation - all synchronized to differential CK/CK# and DQS/DQS# inputs.

Key Specifications

Pinout & Package

VFBGA-96 package with 7.5 mm × 13 mm footprint, 0.8 mm ball pitch, and standard DDR3L ball assignment per JEDEC MO-270B. Ball layout optimized for signal integrity in high-speed memory interfaces with dedicated VDD/VSS pairs and controlled impedance routing paths.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MT41K128M16JT-125:K and IS43TR16128B-125KBL, W632GU6MB12I TR uniquely integrates ASR with temperature-triggered t_REFI halving and standardized write leveling protocol, reducing host software overhead and enabling robust operation in thermally aggressive environments without board-level redesign.

Availability

W632GU6MB12I TR is available at Aetrix Electronics and suitable for industrial PLCs, networking SoCs, medical imaging front-ends, and automotive ADAS camera hubs requiring stable component supply, long-term lifecycle assurance, and guaranteed industrial temperature performance.

Supply support for W632GU6MB12I 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 DRAM products for industrial, automotive, and communications markets.

The W632GU6MB series belongs to Winbond's DDR3L SDRAM product line, designed specifically for cost-sensitive, space-constrained embedded systems needing JEDEC-compliant low-voltage memory with extended temperature reliability and advanced power management features.

FAQ

What is the maximum supported CAS Latency for W632GU6MB12I TR at DDR3L-1600 speed?

W632GU6MB12I TR supports CAS Latency settings of CL = 5, 6, 7, 8, 9, 10, and 11 at DDR3L-1600 speed. The default and most commonly used setting is CL = 11, matching the 11-11-11 timing bin. CL = 7 and CL = 9 are optional and require t_AA/t_RCD/t_RP minimums of 13.125 ns or lower, with SPD programming aligned to the selected CL value. W632GU6MB12I TR does not support CL = 13 or CL = 14 at this speed grade.

Does W632GU6MB12I TR support both 1.35 V and 1.5 V operation?

Yes, W632GU6MB12I TR is fully backward-compatible with 1.5 V DDR3 systems. It operates at 1.35 V nominal (1.283 V–1.45 V) for DDR3L mode and accepts 1.5 V ± 75 mV (1.425 V–1.575 V) for legacy DDR3 compatibility. Voltage switching between modes is supported via VDD/VDDQ ramp sequencing per JEDEC specification, and W632GU6MB12I TR maintains full AC/DC parameter compliance in both configurations without reinitialization.

How is the ZQ calibration function implemented on W632GU6MB12I TR?

W632GU6MB12I TR performs ZQ calibration using an external 240 Ω ±1 % precision resistor connected between the ZQ pin and ground. Upon power-up or explicit ZQCL command, the device measures this reference to trim its 34 Ω output drivers and on-die termination (ODT) impedances. Calibration occurs at start-up and can be repeated dynamically via ZQCS command. W632GU6MB12I TR supports both ZQ short (ZQCL) and long (ZQINIT) calibration sequences, with ZQCL recommended for periodic recalibration during operation.

What is the purpose of the Multi-Purpose Register (MPR) in W632GU6MB12I TR?

The Multi-Purpose Register (MPR) in W632GU6MB12I TR stores a predefined 128-bit calibration pattern used for system-level timing margin analysis. When activated via MRS command, the MPR outputs this fixed pattern on DQ pins during read operations, allowing the memory controller to measure setup/hold margins, DQS-to-DQ skew, and signal integrity across all lanes. This enables automated write leveling and robust DDR training without requiring custom test patterns. W632GU6MB12I TR implements MPR per JEDEC DDR3L standard with identical addressing and protocol.

Can W632GU6MB12I TR operate reliably at 95°C case temperature?

Yes, W632GU6MB12I TR is rated for –40°C to +95°C case temperature operation and fully complies with JEDEC DDR3L specifications across this range. At temperatures above 85°C, Auto Self-Refresh (ASR) must be enabled (MR2[7:6] = 10b) to halve the refresh interval to 3.9 µs, ensuring data retention. This mode is mandatory for continuous operation at 95°C and is supported natively by W632GU6MB12I TR without external thermal sensors or host intervention.