Winbond Electronics Corporation W9816G6JH-6 TR

Overview

W9816G6JH-6 TR from Winbond is a 512K × 2 banks × 16-bit synchronous DRAM (SDRAM) operating at 166 MHz with CAS Latency 3, 3.3V ±0.3V supply, and LVTTL interface. It delivers 332 MB/s peak bandwidth in burst-4 mode and supports auto-precharge, self-refresh, and interleaved bank access for high-efficiency memory subsystems in embedded controllers and industrial displays.

For engineers reviewing the W9816G6JH-6 TR datasheet, W9816G6JH-6 TR pinout, W9816G6JH-6 TR application, or W9816G6JH-6 TR equivalent, key selection criteria include its TSOP II-50 package, -6 speed grade timing compliance (tRCD = 20 ns, tRP = 20 ns), burst length configurability (1/2/4/8/full page), and dual DQM masking for byte-level write control in resource-constrained systems.

Technical Context

This SDRAM implements a two-bank architecture with independent row activation and column access, enabling true bank interleaving to hide precharge latency. Its programmable Mode Register controls burst type (sequential/interleaved), burst length, and CAS latency-critical for optimizing throughput in burst-oriented data paths like video frame buffers or network packet queues.

Command decoding is fully synchronous to CLK, with all operations triggered on rising edges. The device supports power management via CKE-controlled Power Down and Self Refresh modes, and uses separate VDDQ/VSSQ rails to isolate I/O noise from core logic-essential for stable operation in mixed-signal industrial environments.

Key Specifications

Pinout & Package

W9816G6JH-6 TR is housed in a 50-pin, 400-mil TSOP II package with lead-free, RoHS-compliant construction. Pin layout follows JEDEC-standard SDRAM pinout for mechanical and thermal compatibility with legacy PCB footprints.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS42S16100E-6BLI and MT48LC16M16A2P-6A:G, W9816G6JH-6 TR offers native 50-pin TSOP II compatibility and dual DQM control-reducing PCB layer count and simplifying partial-write logic in cost-sensitive industrial controllers.

Availability

W9816G6JH-6 TR is available at Aetrix Electronics and suitable for industrial HMIs, network gateways, embedded media players, and PLC controllers requiring stable component supply across multi-year production cycles.

Supply support for W9816G6JH-6 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 manufacturer specializing in memory ICs, flash storage, and security solutions, with over 30 years of DRAM design heritage.

The W9816G6JH series targets cost-optimized, high-reliability embedded systems requiring standardized SDRAM performance without premium pricing-emphasizing industrial temperature variants and long-lifecycle support.

FAQ

What is the maximum operating frequency supported by W9816G6JH-6 TR?

W9816G6JH-6 TR supports a maximum clock frequency of 166 MHz, corresponding to a 6 ns clock period (tCK). This speed grade meets PC133 SDRAM timing specifications and is validated for stable operation under 3.3V ±0.3V supply with CAS Latency 3. All AC timing parameters-including tRCD, tRP, and tRC-are guaranteed at this frequency across the 0°C to +70°C operating range.

Does W9816G6JH-6 TR support both sequential and interleaved burst addressing modes?

Yes, W9816G6JH-6 TR supports both sequential and interleaved burst addressing, controlled via the Mode Register. Sequential mode increments column addresses linearly (e.g., n, n+1, n+2), while interleaved mode toggles lower address bits for cache-friendly access patterns. This flexibility allows optimization for different processor architectures-such as ARM Cortex-A series (preferring sequential) or legacy x86 derivatives (benefiting from interleaved).

How does the auto-precharge function operate in W9816G6JH-6 TR?

In W9816G6JH-6 TR, auto-precharge is activated by setting A10 = HIGH during a READ or WRITE command. For reads, precharge begins before burst completion (delayed by CAS Latency cycles); for writes, it starts two clocks after final data input (tWR). This eliminates manual PRECHARGE command insertion, reducing command overhead in burst-intensive applications like video streaming or DMA transfers.

What is the purpose of separate VDDQ and VSSQ pins on W9816G6JH-6 TR?

W9816G6JH-6 TR uses dedicated VDDQ and VSSQ pins to isolate I/O buffer power from core logic supplies. This separation minimizes noise coupling from high-speed DQ switching into sensitive internal circuits, improving signal integrity and timing margin-especially critical in mixed-signal industrial environments where EMI immunity directly impacts system reliability.

Can W9816G6JH-6 TR be used in systems requiring extended temperature operation?

No, W9816G6JH-6 TR is specified for 0°C to +70°C operation only. For extended temperature applications (–40°C to +85°C), the pin-compatible W9816G6JH-6I variant must be selected. The -6I version shares identical electrical and timing characteristics but undergoes additional screening and qualification to guarantee performance across the industrial temperature range.