Winbond Electronics Corporation W632GG6KB-12

Overview

W632GG6KB-12 from Winbond is a 2Gb (16M × 8 banks × 16-bit) DDR3 SDRAM compliant with JEDEC DDR3-1600 (11-11-11) timing, operating at 1.5V VDD/VDDQ, supporting CAS Latency 6–11 and programmable CWL 5–8. It delivers 1600 Mb/s/pin data rates in industrial-grade systems requiring stable memory for embedded controllers and networking interfaces.

For engineers reviewing the W632GG6KB-12 datasheet, W632GG6KB-12 pinout, W632GG6KB-12 application, or W632GG6KB-12 equivalent, this page provides verified DDR3-1600 timing parameters, ball-mapped I/O roles, ZQ calibration support, dynamic ODT configuration, and validated drop-in alternatives for memory subsystem design and BOM optimization.

Technical Context

This DDR3 SDRAM implements an 8-bit prefetch architecture with eight internal banks, enabling concurrent row activation and interleaved burst access. It supports posted CAS with additive latency (AL = 0, CL−1, CL−2), DLL-aligned DQ/DQS timing, and bi-directional differential strobes (DQS/DQS#) edge-aligned on reads and center-aligned on writes.

Key control features include asynchronous RESET#, programmable mode registers (MR0–MR3) for CAS latency, CWL, PASR, ASR, and dynamic ODT (Rtt_WR), plus system-level calibration via write leveling and Multi-Purpose Register (MPR) readout of timing bit patterns.

Key Specifications

Pinout & Package

W632GG6KB-12 is packaged in a 96-ball WBGA (9 mm × 13 mm, 0.8 mm pitch), RoHS-compliant, lead-free package with VSS/VDD/VDDQ power/ground ball distribution optimized for DDR3 signal integrity and thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with W632GG6KB-12, MT41K128M16HA-125:E offers DDR3L compatibility at cost of higher layout complexity for dual-rail supply, while IS43TR16256B-125KBL provides superior ZQ tracking for systems lacking board-level impedance tuning capability - both require validation of RESET# timing and MPR register behavior against Winbond's implementation.

Availability

W632GG6KB-12 is available at Aetrix Electronics and suitable for networking switch buffers, industrial PLC main memory, medical imaging display controllers, and video surveillance DVR buffers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for W632GG6KB-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 DDR SDRAM, with ISO 9001-certified manufacturing and global distribution.

The W632GG6KB series belongs to Winbond's industrial-grade DDR3 SDRAM product line, designed specifically for embedded systems demanding extended temperature operation, JEDEC-compliant reliability, and robust signal integrity features like dynamic ODT and write leveling.

FAQ

What is the maximum operating frequency supported by W632GG6KB-12?

W632GG6KB-12 supports a maximum clock frequency of 800 MHz, delivering a data transfer rate of 1600 Mb/s per pin (DDR3-1600). This is confirmed by its speed grade suffix "-12" and JEDEC-compliant timing parameters including tAA min = 13.75 ns, tRCD min = 13.75 ns, and tRP min = 13.75 ns at 800 MHz. The device achieves this performance under 1.5 V ±0.075 V supply and 0°C–95°C case temperature conditions.

Does W632GG6KB-12 support dynamic on-die termination (Rtt_WR)?

Yes, W632GG6KB-12 supports dynamic ODT (Rtt_WR) as defined in MR2 bit A2. When enabled, it applies programmable termination (75 Ω or 150 Ω) to DQ, DQS, and DM pins exclusively during WRITE operations - improving write signal integrity without impacting read paths. This feature is configured via mode register MR2 and requires proper ODT timing alignment relative to the WRITE command.

How does W632GG6KB-12 handle extended temperature operation up to 95°C?

W632GG6KB-12 supports 0°C ≤ TCASE ≤ 95°C by enabling Auto Self Refresh (ASR) via MR2 bits A6=1 and A7=don't care, which doubles refresh frequency to 3.9 µS intervals. This ensures data retention at elevated temperatures without requiring manual refresh intervention. The part's IDD6 self-refresh current remains stable at ≤19 mA across the full range, validated per JEDEC JESD209-3 specification.

What is the purpose of the ZQ pin on W632GG6KB-12?

The ZQ pin on W632GG6KB-12 connects to an external 240 Ω ±1 % precision resistor to ground and enables factory and runtime calibration of output driver strength and on-die termination (ODT) impedances. ZQ calibration commands (ZQCL and ZQCS) adjust internal current sources to maintain SSTL_15-compatible drive levels and termination accuracy across voltage and temperature variations - critical for maintaining signal integrity at 800 MHz.

Can W632GG6KB-12 be used as a direct replacement for W632GG6KB-11 in a DDR3-1866 design?

No, W632GG6KB-12 is not a direct replacement for W632GG6KB-11 in DDR3-1866 designs. While both share identical pinout and package, W632GG6KB-12 is binned for DDR3-1600 (800 MHz, CL11) and does not guarantee tAA/tRCD/tRP ≤13.125 ns required for DDR3-1866 (933 MHz, CL13). Substituting it would violate timing margins and risk data corruption; system-level revalidation of all AC parameters is mandatory.