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Winbond Electronics Corporation W9864G6JH-6I
- Part No.:
- W9864G6JH-6I
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 54-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
W9864G6JH-6I.pdf
- Description:
- IC DRAM 64MBIT PAR 54TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:3,528
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Product details
Overview
W9864G6JH-6I from Winbond is a 1M × 4 banks × 16-bit synchronous DRAM (SDRAM) operating at 166 MHz with CAS Latency 3, 3.3V ±0.3V supply, and industrial temperature range (–40°C to +85°C), used as main memory in embedded controllers, network processors, and multimedia SoC platforms requiring burst-access bandwidth up to 332 MB/s.
For engineers reviewing the W9864G6JH-6I datasheet, W9864G6JH-6I pinout, W9864G6JH-6I application, or W9864G6JH-6I equivalent, key selection considerations include TSOP-II-54 package compatibility, LVTTL interface timing compliance, auto-precharge support, burst length programmability (1/2/4/8/full page), and industrial-grade thermal reliability.
Technical Context
This SDRAM implements four independent 1M-word banks with interleaved access capability to hide precharge latency. It supports both sequential and interleave burst addressing modes, controlled via a programmable Mode Register that defines CAS latency, burst length, and burst type.
Functional operation relies on command decoding synchronized to CLK rising edges, with critical control signals including CKE (clock enable for power-down/self-refresh), CS (chip select), RAS/CAS/WE (command strobes), and DQM (data mask). Internal refresh is managed via 4K cycles per 64 ms, with self-refresh current ≤2 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 1,048,576 words × 4 banks × 16 bits = 128 Mbit total capacity |
| Max Clock Frequency | 166 MHz - determines maximum sustained data throughput of 332 MB/s (166M × 2 bytes) |
| CAS Latency | CL = 3 - fixed read access latency of 3 clock cycles after column address strobe |
| Burst Length | Programmable: 1, 2, 4, 8, or full-page - enables optimized sequential data fetches per activation |
| Supply Voltage | 3.3V ±0.3V - requires stable LDO regulation; VDDQ separated from VDD for I/O noise immunity |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments without derating |
| Refresh Requirement | 4,096 cycles / 64 ms - mandates periodic refresh controller intervention or auto-refresh command issuance |
| Interface Standard | LVTTL - compatible with 3.3V logic families; no SSTL or differential signaling required |
Pinout & Package
W9864G6JH-6I is housed in a 54-pin TSOP (II)-400 mil lead-free RoHS-compliant package with separate VDD/VDDQ and VSS/VSSQ power/ground pairs for signal integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A11 | Address Input | Multiplexed row/column address lines; A10 controls all-bank vs. bank-select precharge |
| BS0, BS1 | Bank Select | 2-bit encoding selects one of four internal banks during ACTIVATE or READ/WRITE |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus; LDQM/UDQM provide byte-level write masking |
| CS, RAS, CAS, WE | Command Strobes | Four active-low control inputs decoded on CLK rising edge to execute device operations |
| CLK, CKE | Clock Interface | CLK synchronizes all commands; CKE gates internal clock to enter power-down or self-refresh |
| LDQM, UDQM | Data Mask | Low-active masks lower/upper 8 bits of DQ bus during write; places DQ in Hi-Z during read |
| VDD, VDDQ, VSS, VSSQ | Power/Ground | Dual-supply architecture isolates core logic (VDD/VSS) from I/O drivers (VDDQ/VSSQ) |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Burst Mode | Supports sequential or interleave addressing - enables optimal cache-line or pixel-block access patterns |
| Auto-Precharge | Integrated precharge trigger on A10 high during READ/WRITE - eliminates external timing coordination overhead |
| Industrial Temp Range | –40°C to +85°C operation without performance degradation - suitable for uncontrolled ambient deployments |
| Separate I/O Power Rails | VDDQ/VSSQ isolation reduces switching noise coupling into core logic - improves timing margin stability |
| Self-Refresh Mode | Autonomous refresh with ≤2 mA current - maintains data retention during host sleep without external refresh controller |
Applications
| Network Router Buffering | Industrial HMI Display Controller |
|---|---|
Use Scenario: Packet buffering in Layer 3 routing ASICs handling 100 Mbps–1 Gbps Ethernet traffic. IC Role / Device Role / Timing Role: Main working memory for packet queue management, accessed via burst reads/writes aligned to MTU boundaries. Use Value: 166 MHz clock and CL3 latency deliver deterministic 18 ns read access time, enabling line-rate forwarding with minimal buffer stall cycles. | Use Scenario: Frame buffer storage for 800×480 RGB565 TFT displays in factory-floor HMIs. IC Role / Device Role / Timing Role: Dedicated graphics memory interfaced to display controller's parallel RGB interface. Use Value: Full-page burst mode allows single ACTIVATE + 8-word burst to load one 16-pixel scanline, reducing command overhead by 87% vs. random access. |
| DSP-Based Audio Processing | Legacy Industrial PLC CPU Module |
Use Scenario: Real-time FIR filter coefficient and sample storage in audio DSP subsystems. IC Role / Device Role / Timing Role: External program/data RAM for TI C6000 or Analog Devices SHARC derivatives. Use Value: Interleaved bank access hides tRP (15 ns) between coefficient fetch and sample write, sustaining >90% bus utilization during dual-port streaming. | Use Scenario: Main memory expansion for aging 32-bit microcontroller-based PLC CPUs running ladder logic interpreters. IC Role / Device Role / Timing Role: Drop-in SDRAM replacement for obsolete EDO or Fast Page Mode DRAM modules. Use Value: Pin-compatible TSOP-II-54 footprint and LVTTL signaling allow direct PCB reuse; –40°C to +85°C rating ensures field reliability in cabinet-mounted enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SDRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS42S16100E-6BLI | Same density (128 Mbit), 166 MHz, CL3, TSOP-54, but uses SSTL_3 interface and requires 3.3V ±0.3V VDD only (no VDDQ separation) | Requires level-shifting or SSTL-compatible controller; lacks VDDQ/VSSQ noise isolation | Choose if controller supports SSTL_3 and board layout already accommodates single 3.3V rail |
| MT48LC16M16A2P-6A:G | Identical organization and speed grade, but 60-ball TFBGA package and different AC timing (tRCD = 20 ns vs. 22 ns) | Not pin-compatible; requires PCB redesign; higher I/O density but better thermal dissipation | Choose for space-constrained designs where BGA assembly is available and thermal headroom is limited |
Compared with IS42S16100E-6BLI and MT48LC16M16A2P-6A:G, W9864G6JH-6I offers LVTTL compatibility without level shifters, dedicated VDDQ/VSSQ rails for robustness in noisy industrial environments, and guaranteed –40°C to +85°C operation - making it optimal for legacy-compatible, cost-sensitive, and thermally demanding embedded systems.
Availability
W9864G6JH-6I is available at Aetrix Electronics and suitable for network infrastructure, industrial HMI, DSP audio processing, and legacy PLC CPU module designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for W9864G6JH-6I 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, SDR/DDR SDRAM, and code storage devices for embedded systems.
W9864G6JH-6I belongs to Winbond's legacy SDR SDRAM product line, designed specifically for cost-sensitive, non-DDR-requiring applications in industrial automation, networking, and consumer electronics where LVTTL compatibility and industrial temperature grading are essential.
FAQ
What is the maximum data bandwidth achievable with W9864G6JH-6I?
W9864G6JH-6I achieves a peak data bandwidth of 332 MB/s, calculated as 166 MHz × 16 bits ÷ 8 bits/byte. This assumes full-page burst reads with zero wait states and continuous bank interleaving to hide tRP and tRCD delays. Real-world throughput depends on controller efficiency, burst length usage, and refresh overhead.
Does W9864G6JH-6I support both sequential and interleave burst addressing modes?
Yes, W9864G6JH-6I supports both sequential and interleave burst modes, configured via the Mode Register Set command. Sequential mode increments column addresses linearly (e.g., n, n+1, n+2); interleave mode toggles LSBs first (e.g., n, n⊕1, n⊕2). The choice affects cache-line alignment efficiency and controller address generation logic.
How does the auto-precharge function operate in W9864G6JH-6I?
In W9864G6JH-6I, auto-precharge is triggered when A10 is high during a READ or WRITE command. For reads, precharge begins before burst completion (delay = CL cycles); for writes, it starts two cycles after final data input (tWR). This eliminates manual precharge command insertion, simplifying controller firmware but requiring tDAL (tWR + tRP) delay before reactivation.
What power supply requirements must be met for reliable operation of W9864G6JH-6I?
W9864G6JH-6I requires two regulated 3.3V ±0.3V supplies: VDD for core logic and VDDQ for I/O buffers, each with dedicated VSS and VSSQ grounds. Decoupling capacitors (0.1 µF ceramic + 4.7 µF tantalum per supply pair) are mandatory near the TSOP-II-54 package to maintain signal integrity and meet AC timing specs under dynamic load.
Can W9864G6JH-6I be used in place of older EDO or Fast Page Mode DRAMs?
W9864G6JH-6I is not a drop-in replacement for asynchronous DRAMs like EDO or FPM due to its synchronous interface, clocked command protocol, and mandatory initialization sequence. However, it can replace them in new designs where the controller supports SDRAM timing and command sets - offering higher bandwidth, lower power, and simplified refresh management.
W9864G6JH-6I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- -
- Package/Case:
- 54-TSOP (0.400", 10.16mm Width)
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- DRAM
- Technology:
- SDRAM
- Memory Size:
- 64Mbit
- Memory Organization:
- 4M x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- 166 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 5 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 54-TSOP II
W9864G6JH-6I FAQ
1.How can I place an order for W9864G6JH-6I through Aetrix?
Please submit a Request for Quotation (RFQ) for W9864G6JH-6I on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for W9864G6JH-6I reliable?
The price and inventory of W9864G6JH-6I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W9864G6JH-6I is usually 5 days.
3.What payment methods are accepted for W9864G6JH-6I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W9864G6JH-6I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W9864G6JH-6I?
W9864G6JH-6I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W9864G6JH-6I order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for W9864G6JH-6I?
For technical support, including W9864G6JH-6I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W9864G6JH-6I requirements.
6.How does Aetrix verify that W9864G6JH-6I is sourced from the original manufacturer or authorized distributors?
All W9864G6JH-6I products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that W9864G6JH-6I meets industry standards.
7.What is the process for return or replacement of W9864G6JH-6I?
All W9864G6JH-6I units undergo pre-shipment inspection (PSI). If there is an issue with W9864G6JH-6I, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The W9864G6JH-6I part is unused and in its original packaging.
Return procedure for W9864G6JH-6I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W9864G6JH-6I Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
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M24C02-FMC6TG
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Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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