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Winbond Electronics Corporation W9864G2JH-6 TR
- Part No.:
- W9864G2JH-6 TR
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 86-TFSOP (0.400", 10.16mm Width)
- Datasheet:
-
W9864G2JH-6 TR.pdf
- Description:
- IC DRAM 64MBIT PAR 86TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:2,644
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Product details
Overview
W9864G2JH-6 TR from Winbond is a 512K × 4 banks × 32-bit synchronous DRAM (SDRAM) operating at 166 MHz with CAS Latency 3, 3.3V ±0.3V supply, and TSOP II-86 package. It delivers 166M words/sec bandwidth and supports burst lengths of 1, 2, 4, 8, or full page for high-throughput memory buffering in embedded controllers and industrial display systems.
For engineers reviewing the W9864G2JH-6 TR datasheet, W9864G2JH-6 TR pinout, W9864G2JH-6 TR application, or W9864G2JH-6 TR equivalent, this page provides verified timing parameters, bank-select logic behavior, DQM-controlled byte masking, self-refresh current (2 mA), and TSOP II pin mapping - all confirmed from Winbond's official A03 revision datasheet dated March 2017.
Technical Context
This SDRAM implements four independent 512K-word banks with interleaved access capability to hide precharge latency. Its command decoder interprets RAS/CAS/WE/CS on CLK rising edges to execute bank activate, read/write, auto-precharge, and self-refresh operations - all synchronized to a single 166 MHz clock without internal PLL.
Mode Register programming defines burst type (sequential or interleave), length, and CAS latency; column addressing uses A0–A7 while A10 controls all-bank precharge or auto-precharge enable. DQM0–DQM3 provide per-byte write masking and output tri-state control with zero-latency write blocking and 2-cycle read disable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 524,288 words × 4 banks × 32 bits = 67,108,864 bits total capacity |
| Max Clock Frequency | 166 MHz - determines maximum sustained data rate of 166M words/sec |
| CAS Latency | CL = 3 - fixed 3-clock delay between column address strobe and first valid read data |
| Burst Length | 1, 2, 4, 8, or full page - enables efficient sequential access within an open row |
| Supply Voltage | 3.3 V ± 0.3 V - requires stable LVTTL-compatible power rail; no 2.7–3.6 V flexibility like -7 grade |
| Refresh Rate | 4K cycles / 64 ms - mandates refresh command every 15.625 µs per bank to retain data |
| Self-Refresh Current | 2 mA - measured during self-refresh mode; critical for low-power suspend operation |
Pinout & Package
W9864G2JH-6 TR is packaged in RoHS-compliant, lead-free TSOP II-86 with 16 mm × 22.2 mm body size and 0.5 mm pitch. Pin functions are validated per Winbond datasheet A03 Section 5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A10 | Address Input | Multiplexed row/column address lines; A10 samples precharge/all-bank select during command |
| BS0, BS1 | Bank Select | Binary-encoded selection of one of four internal banks during activate or read/write |
| DQ0–DQ31 | Data I/O | 32-bit bidirectional data bus with separate VDDQ/VSSQ for noise isolation |
| DQM0–DQM3 | Data Mask | Per-byte write blocking (zero latency) and read output disable (2-cycle latency) |
| CLK, CKE | Timing Control | CLK latches all commands; CKE gates internal clock - low enables power-down/self-refresh |
| CS, RAS, CAS, WE | Command Decode | Four active-low control signals decoded on CLK rising edge to define operation |
Key Features
| Feature | Design Value |
|---|---|
| Interleaved Bank Access | Enables back-to-back reads/writes across banks to eliminate tRC dead time and sustain peak bandwidth |
| Programmable Burst Mode | Configurable sequential or interleave addressing via Mode Register - optimizes locality for video or packet buffers |
| Auto-Precharge Support | A10-driven automatic bank close after read/write - reduces manual command overhead and improves efficiency |
| LVTTL Interface | Compatible with standard 3.3V microcontroller and FPGA I/O without level shifters |
| Separate I/O Power | VDDQ/VSSQ rails isolate data path noise from core logic, improving signal integrity at 166 MHz |
Applications
| Industrial HMI Display Controller | Network Packet Buffer |
|---|---|
Use Scenario: Real-time rendering of GUI layers and frame buffers in factory HMIs with 800×480 resolution and 60 Hz refresh. IC Role / Device Role / Timing Role: Primary frame buffer SDRAM interfaced to ARM Cortex-A5 MPUs via 32-bit bus; operates in interleaved burst mode with CL3 timing. Use Value: 166 MHz clock and 4-bank architecture deliver >1.3 GB/s effective bandwidth to sustain dual-layer alpha-blended graphics without frame tearing. | Use Scenario: Temporary storage of Ethernet frames in industrial gateways supporting 100 Mbps full-duplex traffic with deep packet inspection. IC Role / Device Role / Timing Role: Shared packet buffer between MAC and CPU subsystems; configured with burst length 8 and auto-precharge for rapid write-read turnaround. Use Value: DQM0–DQM3 enable per-byte validity masking during partial writes, reducing software overhead for variable-length frame handling. |
| Medical Imaging Data Cache | Automotive Infotainment Audio Engine |
Use Scenario: Intermediate storage of ultrasound scan line data before DSP processing in portable diagnostic devices. IC Role / Device Role / Timing Role: High-reliability data cache between ADC interface and ARM-based DSP; operated at 0°C–70°C with -6 speed grade. Use Value: 2 mA self-refresh current ensures <5 µW standby power during idle acquisition phases, extending battery life. | Use Scenario: Audio sample buffering in head-unit systems supporting multi-zone playback and Bluetooth streaming. IC Role / Device Role / Timing Role: Low-latency audio FIFO interfaced to TI TMS320C6748 DSP; uses sequential burst mode and CL3 for deterministic read timing. Use Value: TSOP II-86 package allows compact PCB layout near audio codec, minimizing trace length and jitter-sensitive analog coupling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SDRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS42S16400J-6BLI | Same 512K × 4 × 32 organization, 166 MHz, CL3, but 54-pin TSOP - not pin-compatible | Requires PCB redesign due to different pin count and DQ/DQM layout; supports industrial temp (-40°C to 85°C) | Select if extended temperature range is required and board layout can be modified. |
| MT48LC4M32B2P-6A | Identical 512K × 4 × 32 config and 166 MHz/CL3 spec, but 86-pin TSOP II - pinout differs in BS0/BS1 and DQM placement | Functional replacement only; requires firmware revalidation of bank-select and mask timing due to differing control pin locations | Choose when sourcing from Micron distribution channels; verify mode register initialization sequence compatibility. |
Compared with IS42S16400J-6BLI and MT48LC4M32B2P-6A, W9864G2JH-6 TR offers identical performance but distinct TSOP II-86 pin mapping - particularly for BS0/BS1 and DQM signal routing - making it non-drop-in despite matching electrical specs and capacity.
Availability
W9864G2JH-6 TR is available at Aetrix Electronics and suitable for industrial HMI display controllers, network packet buffers, medical imaging data caches, and automotive infotainment audio engines requiring stable component supply across production lifecycles.
Supply support for W9864G2JH-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 company specializing in specialty memory and microcontrollers, with over 30 years of DRAM design heritage.
The W9864G2JH series belongs to Winbond's legacy SDR SDRAM product line targeting cost-sensitive, high-reliability embedded systems where pin compatibility with JEDEC-standard SDRAMs is essential.
FAQ
What is the operating temperature range for W9864G2JH-6 TR?
W9864G2JH-6 TR is rated for commercial temperature operation from 0°C to +70°C. It is distinct from the -6I variant, which extends the range to -40°C to +85°C for industrial environments. The -6 grade does not guarantee functionality outside its specified range, and thermal derating is not supported per Winbond's A03 datasheet.
Does W9864G2JH-6 TR support both sequential and interleaved burst modes?
Yes, W9864G2JH-6 TR supports both sequential and interleaved burst addressing modes, programmable 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 - both usable with burst lengths of 1, 2, 4, 8, or full page as defined in the W9864G2JH-6 TR datasheet Section 7.12–7.13.
How many banks does W9864G2JH-6 TR have, and how are they selected?
W9864G2JH-6 TR contains four independently addressable banks. Bank selection is performed using the BS0 and BS1 pins during ACTIVE, READ, WRITE, and PRECHARGE commands. These two pins encode binary values (00–11) to target Bank 0 through Bank 3, enabling true interleaved access to hide tRP and tRC delays - a key feature confirmed in W9864G2JH-6 TR's functional description (Section 7.3).
What is the self-refresh current specification for W9864G2JH-6 TR?
The self-refresh current for W9864G2JH-6 TR is 2 mA, as specified in Winbond's official datasheet (Section 3, Order Information table and Section 2 Features). This value is measured under standard conditions and applies across the full commercial temperature range; it reflects the device's power consumption while maintaining data integrity without external refresh commands.
Is W9864G2JH-6 TR pin-compatible with other 86-pin TSOP II SDRAMs like the MT48LC4M32B2P-6A?
No, W9864G2JH-6 TR is not pin-compatible with MT48LC4M32B2P-6A despite sharing the same 86-pin TSOP II package outline. Pin assignments differ significantly - notably BS0/BS1 appear at pins 22/23 in W9864G2JH-6 TR but at pins 31/32 in the Micron part, and DQM0–DQM3 occupy non-matching positions. Direct substitution would require PCB redesign and firmware validation of command timing.
W9864G2JH-6 TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- -
- Package/Case:
- 86-TFSOP (0.400", 10.16mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- DRAM
- Technology:
- SDRAM
- Memory Size:
- 64Mbit
- Memory Organization:
- 2M x 32
- Memory Interface:
- Parallel
- Clock Frequency:
- 166 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 5 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 86-TSOP II
W9864G2JH-6 TR FAQ
1.How can I place an order for W9864G2JH-6 TR through Aetrix?
Please submit a Request for Quotation (RFQ) for W9864G2JH-6 TR 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 W9864G2JH-6 TR reliable?
The price and inventory of W9864G2JH-6 TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W9864G2JH-6 TR is usually 5 days.
3.What payment methods are accepted for W9864G2JH-6 TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W9864G2JH-6 TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W9864G2JH-6 TR?
W9864G2JH-6 TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W9864G2JH-6 TR 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 W9864G2JH-6 TR?
For technical support, including W9864G2JH-6 TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W9864G2JH-6 TR requirements.
6.How does Aetrix verify that W9864G2JH-6 TR is sourced from the original manufacturer or authorized distributors?
All W9864G2JH-6 TR 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 W9864G2JH-6 TR meets industry standards.
7.What is the process for return or replacement of W9864G2JH-6 TR?
All W9864G2JH-6 TR units undergo pre-shipment inspection (PSI). If there is an issue with W9864G2JH-6 TR, 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 W9864G2JH-6 TR part is unused and in its original packaging.
Return procedure for W9864G2JH-6 TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W9864G2JH-6 TR Tags
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M24C02-WMN6TP
STMicroelectronics
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Microchip Technology
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Microchip Technology
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Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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Microchip Technology
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