Winbond Electronics Corporation W632GU6MB-12

Overview

W632GU6MB-12 from Winbond Electronics is a 2 Gb (16M × 8 banks × 16-bit) DDR3L SDRAM operating at 800 MHz (DDR3L-1600, 11-11-11 timing), with 1.35 V nominal supply, 8 internal banks, and VFBGA-96 (7.5 × 13 mm) packaging. It supports programmable CAS Latency (CL = 5–11), CAS Write Latency (CWL = 5–8), ZQ calibration, dynamic on-die termination (ODT), and asynchronous RESET# for embedded computing and industrial control memory subsystems.

For engineers reviewing the W632GU6MB-12 datasheet, W632GU6MB-12 pinout, W632GU6MB-12 application, or W632GU6MB-12 equivalent, key selection criteria include DDR3L-1600 speed bin compliance, industrial temperature range (0°C to 95°C), VDD/VDDQ = 1.283–1.45 V operation, 96-ball VFBGA footprint compatibility, and support for write leveling and MPR-based system timing calibration.

Technical Context

This DDR3L SDRAM implements an 8-bit prefetch architecture synchronized to differential CK/CK# inputs, with bi-directional DQS/DQS# strobes edge-aligned on reads and center-aligned on writes. Its DLL aligns DQ and DQS transitions to clock edges, enabling stable high-speed data capture.

The device supports multiple power-down modes (precharged and active), auto-precharge, partial array self-refresh (PASR), and programmable additive latency (AL = 0, CL−1, CL−2). Mode registers MR0–MR3 configure burst length (BL8/BC4), read ordering, ODT RTT values, dynamic ODT (Rtt_WR), and CAS Write Latency per frequency.

Key Specifications

Pinout & Package

VFBGA-96 package with 7.5 mm × 13 mm body, 0.8 mm ball pitch, and RoHS-compliant lead-free finish. Ball map conforms to JEDEC MO-270DA standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MT41K256M16HA-125:E and IS43TR16256B-125KBL, the W632GU6MB-12 provides superior write-latency flexibility (CWL up to 8), lower active current (IDD0 = 120 mA), and guaranteed PASR implementation - making it optimal for thermally constrained or energy-sensitive industrial memory subsystems.

Availability

W632GU6MB-12 is available at Aetrix Electronics and suitable for industrial HMI controllers, network edge routers, medical diagnostic terminals, and smart energy gateways requiring stable component supply, long-term lifecycle support, and JEDEC-compliant DDR3L performance.

Supply support for W632GU6MB-12 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-12 belongs to Winbond's DDR3L SDRAM product line, designed specifically for cost-sensitive, thermally demanding embedded systems requiring JEDEC-compliant low-voltage memory with extended temperature operation and advanced power management features.

FAQ

What is the maximum operating frequency supported by the W632GU6MB-12?

The W632GU6MB-12 is rated for DDR3L-1600 operation, corresponding to a maximum clock frequency of 800 MHz (1600 MT/s data rate). Its AC timing parameters - including tRCD, tRP, and tRC - are guaranteed at 11-11-11 (ns) under VDD/VDDQ = 1.283–1.45 V and 0°C to 95°C case temperature. This speed bin is validated per JEDEC JESD79-3F specification.

Does the W632GU6MB-12 support backward compatibility with standard 1.5 V DDR3 systems?

Yes, the W632GU6MB-12 supports dual-voltage operation: it functions fully at 1.35 V (DDR3L mode) and is backward compatible with 1.5 V ± 0.075 V DDR3 systems. The device maintains full JEDEC timing compliance and signal integrity across both voltage domains, allowing seamless migration from legacy DDR3 designs without redesigning power delivery networks.

How does the W632GU6MB-12 implement power savings in low-activity states?

The W632GU6MB-12 supports multiple low-power modes: precharged power-down (IDD2P = 25 mA), active power-down (IDD3N = 45 mA), and self-refresh (IDD6 = 11 mA). It also features Partial Array Self-Refresh (PASR), which cuts self-refresh current by refreshing only selected banks - reducing IDD6 by up to 50% in applications where full-array refresh is unnecessary.

What calibration features does the W632GU6MB-12 provide for high-speed signal integrity?

The W632GU6MB-12 includes write leveling and Multi-Purpose Register (MPR) functionality. Write leveling adjusts per-DQS delay to compensate for board-level skew between CK and DQS signals. The MPR outputs a fixed 0x00000000 pattern for system-level timing margin testing - both features are essential for robust DDR3L-1600 operation in dense, multi-load memory channels.

Is the W632GU6MB-12 pin-compatible with other Winbond DDR3L SDRAMs in the same family?

Yes, the W632GU6MB-12 shares identical VFBGA-96 pinout, ball assignment, and electrical interface with other members of the W632GU6MB family (e.g., -09, -11, -15 variants). All speed grades use the same footprint, command set, and register mapping - enabling drop-in replacement across performance tiers without PCB layout changes.