Winbond Electronics Corporation W9816G6JH-7I TR

Overview

W9816G6JH-7I TR from Winbond is a 512K × 2 banks × 16-bit synchronous DRAM (SDRAM) operating at 143 MHz with CAS Latency 3, 2.7–3.6 V supply, and industrial temperature range (−40°C to +85°C), used as main memory in embedded controllers, industrial HMIs, and legacy communication modules requiring LVTTL-compatible SDRAM.

For engineers reviewing the W9816G6JH-7I TR datasheet, W9816G6JH-7I TR pinout, W9816G6JH-7I TR application, or W9816G6JH-7I TR equivalent, key selection criteria include burst length configurability (1/2/4/8/full page), auto-precharge support, dual-bank interleaving capability, and TSOP II-50 industrial-grade thermal reliability.

Technical Context

This SDRAM implements fully synchronous command decoding synchronized to CLK rising edges, with programmable Mode Register controlling burst type (sequential/interleaved), burst length, and CAS latency. It supports bank activate/read/write/precharge/self-refresh/power-down modes via RAS/CAS/WE/CS control lines.

Internal architecture features two independent 512K×16-bit banks enabling true interleaved access to hide precharge delays; column addressing uses internal counter for burst operations, while random column access remains possible via explicit A0–A7 inputs during column latch time.

Key Specifications

Pinout & Package

Packaged in 50-pin, 400-mil TSOP II (Thin Small Outline Package, Type II) with lead-free, RoHS-compliant construction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS42S16100E-7BLI and MT48LC16M16A2P-75:C, the W9816G6JH-7I TR offers identical functional timing and dual-bank architecture in a compact 50-pin TSOP II, with guaranteed industrial temperature operation and lower minimum supply voltage-making it optimal for space-constrained, thermally demanding embedded systems.

Availability

W9816G6JH-7I TR is available at Aetrix Electronics and suitable for industrial HMIs, legacy communication modules, and embedded controller main memory applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for W9816G6JH-7I 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 SPI NOR Flash, PSRAM, and SDR SDRAM for industrial, automotive, and consumer markets.

The W9816G6JH series belongs to Winbond's legacy SDR SDRAM product line, designed specifically for cost-sensitive, reliability-critical embedded systems needing JEDEC-compliant synchronous DRAM with industrial temperature support and LVTTL compatibility.

FAQ

What is the maximum operating frequency and CAS latency supported by the W9816G6JH-7I TR?

The W9816G6JH-7I TR is rated for a maximum clock frequency of 143 MHz with CAS Latency 3 (CL3). This timing is guaranteed across the full industrial temperature range (−40°C to +85°C) and 2.7–3.6 V supply. The -7I speed grade does not support CL2 operation; CL3 is fixed for this variant. All timing parameters-including tRCD, tRP, and tRC-are specified at this speed grade in the official datasheet revision A03.

Does the W9816G6JH-7I TR support auto-precharge, and how is it enabled?

Yes, the W9816G6JH-7I TR supports auto-precharge. It is enabled by asserting A10 HIGH during a READ or WRITE command cycle. When activated, the SDRAM automatically initiates precharge after the burst completes-two clocks after final write data (tWR) for writes, or based on CAS latency for reads. This eliminates the need for explicit PRECHARGE commands in burst-heavy workloads, simplifying controller firmware and improving bandwidth efficiency.

What package type and pin count does the W9816G6JH-7I TR use?

The W9816G6JH-7I TR uses a 50-pin, 400-mil TSOP II (Thin Small Outline Package, Type II) with gull-wing leads. It is lead-free and RoHS compliant. Pin pitch is 0.5 mm, body width is 10.16 mm, and overall dimensions are 22.22 mm × 10.16 mm × 1.2 mm. This package is distinct from TSOP-I (54-pin) and TFBGA variants used by other SDRAM families.

Can the W9816G6JH-7I TR operate at 2.7 V supply, and what are the implications?

Yes, the W9816G6JH-7I TR is fully specified to operate at 2.7 V minimum VDD and VDDQ. At this voltage, AC timing parameters (e.g., tRCD, tRP) are relaxed per datasheet Table 9.5, requiring controller timing margins to be verified accordingly. DC characteristics-including input thresholds (VIH/VIL) and output drive-remain valid across the full 2.7–3.6 V range, enabling interoperability with low-voltage logic domains without level shifters.

How does the W9816G6JH-7I TR handle burst termination and partial writes?

W9816G6JH-7I TR supports burst stop only during full-page bursts (via RAS=HIGH, CAS=HIGH, CS=LOW, WE=LOW); other burst lengths cannot be interrupted mid-sequence. For partial writes, LDQM and UDQM provide byte-level masking: asserting either signal HIGH blocks corresponding lower or upper 8 bits of DQ0–DQ15 with zero latency, eliminating read-modify-write cycles and preserving unmasked data integrity during 16-bit bus transfers.