Winbond Electronics Corporation W9816G6JH-5

Overview

W9816G6JH-5 from Winbond Electronics is a 512K × 2 banks × 16-bit synchronous DRAM (SDRAM) operating at up to 200 MHz with CAS Latency 3, 3.3V ±0.3V supply, and TSOP II-50 package. It delivers 200M words/sec bandwidth and supports burst lengths of 1, 2, 4, 8, or full page for embedded main memory in industrial controllers and legacy computing systems.

For engineers reviewing the W9816G6JH-5 datasheet, W9816G6JH-5 pinout, W9816G6JH-5 application, or W9816G6JH-5 equivalent, key selection criteria include its -5 speed grade (200MHz/CL3), 2-bank architecture enabling interleaved access, LVTTL interface compatibility, self-refresh current ≤2mA, and RoHS-compliant lead-free TSOP II packaging.

Technical Context

The W9816G6JH-5 implements a fully synchronous interface synchronized to CLK's rising edge, with command decoding controlled by CS, RAS, CAS, and WE. Its dual-bank architecture allows bank interleaving to hide precharge latency (tRP = 20 ns min), and programmable Mode Register configures burst type (sequential/interleave), length, and CAS latency.

It supports auto-precharge (A10 high during read/write), burst stop (for full-page bursts), and power management modes including Power Down (CKE low) and Self Refresh (CS/RAS/CAS/WE low, CKE low). All banks must be precharged before Mode Register Set, and eight Auto Refresh cycles are required post-initialization.

Key Specifications

Pinout & Package

Packaged in a 50-pin, 400-mil TSOP II (Thin Small Outline Package, Type II) with lead-free, RoHS-compliant construction. Pin pitch is 0.5 mm; body width is 10.16 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS42S16100E-5BLI and MT48LC16M16A2P-6A, the W9816G6JH-5 offers exact pinout and timing compatibility with legacy 50-pin TSOP II SDRAM designs at 200MHz, while maintaining lower cost and simpler thermal management within its 0°C–70°C envelope.

Availability

W9816G6JH-5 is available at Aetrix Electronics and suitable for industrial PLC memory, legacy embedded controller platforms, medical diagnostic display buffers, and test equipment frame stores requiring stable component supply across multi-year production cycles.

Supply support for W9816G6JH-5 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 SDRAM products for industrial, communications, and consumer markets.

The W9816G6JH series belongs to Winbond's legacy SDR SDRAM product line, designed specifically for cost-sensitive, space-constrained embedded systems requiring JEDEC-compliant 3.3V SDRAM with proven reliability and long-lifecycle support.

FAQ

What is the maximum operating frequency and CAS latency supported by the W9816G6JH-5?

The W9816G6JH-5 is rated for a maximum clock frequency of 200 MHz with CAS Latency 3 (CL3). This timing is guaranteed across the full commercial temperature range (0°C to 70°C) and requires a 3.3V ±0.3V supply. The -5 speed grade designation explicitly confirms this performance binning, and CL3 defines the fixed 3-clock delay between column address assertion and first valid data output in read operations. No other CAS latency values are supported for the W9816G6JH-5 variant.

Does the W9816G6JH-5 support self-refresh mode, and what is its typical current draw?

Yes, the W9816G6JH-5 supports self-refresh mode, entered via the Self-Refresh Command (CS/RAS/CAS/WE low, CKE low on CLK rising edge). Its maximum self-refresh current is specified as 2 mA under standard operating conditions. This low current enables extended retention during system suspend without external refresh circuitry, making it suitable for battery-backed or energy-conscious embedded applications where memory state must persist with minimal power draw.

What package type and pin count does the W9816G6JH-5 use, and is it RoHS compliant?

The W9816G6JH-5 uses a 50-pin, 400-mil TSOP II (Thin Small Outline Package, Type II) with 0.5 mm pin pitch and 10.16 mm body width. It is manufactured using lead-free materials and fully complies with RoHS Directive 2011/65/EU. The package includes dedicated VDDQ/VSSQ pins for I/O power isolation, and pins 33 and 37 are marked NC (no connection) and must remain unconnected in PCB layout.

Can the W9816G6JH-5 be used interchangeably with other speed grades like -6 or -7 in the same design?

No - the W9816G6JH-5 is not interchangeable with -6 or -7 speed grades without timing validation. While pinout and basic functionality are identical, the -5 grade guarantees 200MHz/CL3 operation, whereas -6 supports only 166MHz/CL3 and -7 supports 143MHz/CL3. Using a slower grade may cause timing violations in a design optimized for 200MHz, and substituting -5 into a -6/-7 layout risks overdriving timing margins due to tighter setup/hold requirements. Always validate AC timing against the specific speed grade's datasheet.

What burst lengths and addressing modes does the W9816G6JH-5 support, and how are they configured?

The W9816G6JH-5 supports burst lengths of 1, 2, 4, 8, and full page, configurable via the Mode Register Set command. Burst type - sequential or interleave - is also set in the Mode Register. Sequential mode increments column addresses linearly (e.g., n, n+1, n+2); interleave mode toggles address bits (e.g., A0, then A1, then A0+A1). Configuration requires all banks to be precharged and CKE high before issuing the Mode Register Set command with appropriate A0–A12 address inputs per the Mode Register table.