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Winbond Electronics Corporation W9825G6KH-5
- Part No.:
- W9825G6KH-5
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 54-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
W9825G6KH-5.pdf
- Description:
- IC DRAM 256MBIT PAR 54TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:2,722
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Product details
Overview
W9825G6KH-5 from Winbond is a 4M × 4 banks × 16-bit synchronous DRAM (SDRAM) operating at 200 MHz with CAS Latency 3, 3.3V supply, TSOP II-54 package, and LVTTL interface - used as main memory in embedded controllers, industrial HMIs, and legacy PC-compatible systems requiring burst-oriented, multi-bank memory access.
For engineers reviewing the W9825G6KH-5 datasheet, W9825G6KH-5 pinout, W9825G6KH-5 application, or W9825G6KH-5 equivalent, key selection criteria include CL3 timing compliance at 200 MHz, 4-bank interleaving support, programmable burst length (1–8), self-refresh capability (2 mA max), and TSOP II-54 mechanical compatibility with legacy SDRAM sockets.
Technical Context
This SDRAM implements fully synchronous operation latched on the rising edge of CLK, with independent bank activation enabling row-access hiding via interleaved reads/writes across four internal banks. It supports both sequential and interleave burst addressing modes, auto-precharge triggered by A10 high, and mode register programming for burst length, latency, and burst type.
Functional states include Power Down (CKE low), Self Refresh (CS/RAS/CAS/WE low, CKE low), Clock Suspend (CKE low during active bank), and Burst Stop (CS/WE low, RAS/CAS high). Refresh is managed via 8K cycles per 64 ms at 0°C–70°C, with DQM-controlled byte masking and separate VDDQ/VSSQ for I/O noise immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4,194,304 words × 4 banks × 16 bits = 128 Mbit total capacity |
| Max Clock Frequency | 200 MHz - enables 200 million words/sec peak bandwidth (CL3, tAC = 5.0 ns) |
| CAS Latency | Configurable to CL2 or CL3 - determines read data valid delay after CAS assertion |
| Burst Length | Programmable 1, 2, 4, 8, or full-page - defines consecutive column accesses per command |
| Refresh Rate | 8K cycles / 64 ms @ 0°C–70°C - meets JEDEC SDRAM refresh requirements |
| Supply Voltage | 3.3V ± 0.3V - requires stable LVTTL-compatible power rail with separate VDDQ |
| Operating Temperature | 0°C to +70°C - commercial-grade thermal specification for W9825G6KH-5 |
| Self-Refresh Current | Max 2 mA - enables low-power retention during system sleep without external refresh controller |
Pinout & Package
W9825G6KH-5 is housed in a RoHS-compliant, lead-free TSOP II-54 package (400 mil width, 0.80 mm pitch), with dedicated VDD/VSS and isolated VDDQ/VSSQ supplies for I/O noise suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A12 | Address Input | Multiplexed row/column address lines; A10 controls all-bank precharge when sampled high |
| BS0, BS1 | Bank Select | Selects one of four internal banks during activate or command execution |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus with LDQM/UDQM for byte-level write masking |
| CS, RAS, CAS, WE | Command Control | Four control signals decoded synchronously on CLK rising edge to define operation |
| CLK, CKE | Clock Interface | CLK provides timing reference; CKE gates clock domain entry into Power Down/Self Refresh |
| LDQM, UDQM | I/O Mask | Low-active masks lower/upper 8 bits of DQ bus during writes or forces DQ Hi-Z during reads |
| VDD, VSS | Core Power/Ground | Supplies logic and address circuitry; must ramp simultaneously with VDDQ at power-up |
| VDDQ, VSSQ | I/O Power/Ground | Isolated supply/ground for DQ drivers/receivers to minimize switching noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Mode Register | Enables runtime configuration of burst length, CAS latency, and burst type (sequential/interleave) |
| Multi-Bank Interleaving | Four independent banks allow overlapping activate/precharge/read/write operations to hide latency |
| Auto-Precharge Support | A10-high during Read/Write triggers automatic bank precharge, simplifying controller timing management |
| Byte-Level Write Masking | LDQM/UDQM pins enable selective 8-bit masking on 16-bit writes without additional logic |
| Low-Power Self-Refresh | Enters autonomous refresh state with only CKE asserted low - maintains data with 2 mA max current |
| TSOP II Mechanical Compatibility | 54-pin, 400-mil footprint matches industry-standard SDRAM socket layouts for drop-in replacement |
Applications
| Industrial HMI Memory | Legacy Embedded Controller RAM |
|---|---|
Use Scenario: Touchscreen-based human-machine interface running real-time OS with graphics buffer and firmware overlay storage. IC Role / Device Role / Timing Role: Primary working memory for display frame buffers and application code execution, interfaced via FPGA or microcontroller SDRAM controller. Use Value: 4-bank interleaving sustains >150 MB/s sustained bandwidth for dual-panel UI rendering; CL3-200MHz timing ensures deterministic response under interrupt load. |
Use Scenario: Programmable logic controller (PLC) with motion control firmware requiring deterministic memory access for servo loop buffers and I/O mapping tables. IC Role / Device Role / Timing Role: Main system RAM accessed by ARM9 or MIPS-based SoC with integrated SDRAM controller, supporting burst reads for instruction fetch and writes for real-time data logging. Use Value: Auto-precharge reduces command overhead during frequent small-block writes; 2 mA self-refresh enables safe power-loss recovery without battery backup. |
| PC/104-Compatible Systems | Network Appliance Data Buffer |
Use Scenario: Compact industrial computer using PC/104 form factor with legacy x86 CPU requiring standard SDRAM interface. IC Role / Device Role / Timing Role: Drop-in compatible main memory replacing older SDR SDRAM modules, operating at 200 MHz with CL3 timing. Use Value: TSOP II-54 pinout and LVTTL signaling ensure mechanical and electrical compatibility with existing PC/104 SDRAM sockets and timing constraints. |
Use Scenario: Low-cost Ethernet switch or firewall appliance buffering packet headers and flow tables in real time. IC Role / Device Role / Timing Role: High-throughput packet buffer memory accessed by network processor or DMA engine with burst-length-4 reads/writes. Use Value: Full-page burst mode supports rapid header table initialization; separate VDDQ/VSSQ minimizes jitter-induced CRC errors in high-noise board environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SDRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS42S16400J-5BLI | Same 4M×4×16 organization, 200 MHz/CL3, but rated -40°C to +85°C (industrial grade) | Supports wider temperature range; higher self-refresh current (3 mA) | Choose for extended-temperature deployments where W9825G6KH-5's 0°C–70°C limit is insufficient |
| MT48LC4M16A2P-6A | 166 MHz/CL3 speed grade, same TSOP II-54 package and pinout, but no CL2 option | Limited to 166 MHz max; lacks CAS Latency 2 mode for tighter timing margins | Acceptable for cost-sensitive designs where 200 MHz bandwidth is not required and CL3 suffices |
Compared with W9825G6KH-5, IS42S16400J-5BLI offers broader thermal reliability at higher self-refresh current, while MT48LC4M16A2P-6A trades speed for maturity and broad second-source availability - neither is pin-compatible without validation, but both match core SDRAM protocol and footprint.
Availability
W9825G6KH-5 is available at Aetrix Electronics and suitable for industrial HMIs, legacy embedded controllers, and PC/104-compatible systems requiring stable component supply, long-lifecycle support, and RoHS-compliant TSOP II packaging.
Supply support for W9825G6KH-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 manufacturer specializing in memory ICs, flash products, and microcontrollers, with over 30 years of DRAM design heritage.
W9825G6KH-5 belongs to Winbond's legacy SDR SDRAM product line, engineered for cost-effective, pin-compatible memory upgrades in industrial and embedded platforms where DDR migration is impractical.
FAQ
What is the maximum operating frequency and CAS latency supported by W9825G6KH-5?
W9825G6KH-5 is rated for 200 MHz operation with CAS Latency 3, and also supports 133 MHz with CAS Latency 2. Its timing parameters - including tAC = 5.0 ns and tRCD = 20 ns - are guaranteed under these conditions at 0°C to +70°C. The device uses a programmable mode register to select between CL2 and CL3 modes, and the -5 speed grade is specifically sorted and tested to meet the 200 MHz/CL3 specification.
Does W9825G6KH-5 support self-refresh, and what is its maximum current draw in that mode?
Yes, W9825G6KH-5 supports self-refresh mode with a maximum current draw of 2 mA at 0°C to +70°C. Self-refresh is entered via the dedicated Self Refresh Command (CS/RAS/CAS/WE low, CKE low), and the device maintains data integrity autonomously without external refresh commands. Note that self-refresh is not supported above +85°C, and the -5 grade is specified only up to +70°C.
What package type and pin count does W9825G6KH-5 use?
W9825G6KH-5 uses a TSOP II-54 package: 54-pin, 400-mil body width, 0.80 mm lead pitch, RoHS-compliant and lead-free. Pin assignments follow JEDEC-standard SDRAM layout, including dedicated VDDQ/VSSQ rails for I/O noise isolation, and dual DQM pins (LDQM/UDQM) for 8-bit masking on the 16-bit DQ bus.
Can W9825G6KH-5 be used interchangeably with other 128 Mbit SDRAMs like IS42S16400J?
W9825G6KH-5 shares the same 4M×4×16 organization, TSOP II-54 package, and core SDRAM command set with IS42S16400J-series parts, but direct interchange requires validation of timing margins, voltage tolerances, and mode register encoding. While pinout is identical, differences in tRAS, tRP, and self-refresh behavior mean board-level qualification is necessary before substitution - it is not a guaranteed drop-in replacement.
What are the supported burst lengths and addressing modes for W9825G6KH-5?
W9825G6KH-5 supports burst lengths of 1, 2, 4, 8, and full-page, configurable via its mode register. It implements two burst addressing modes: sequential (linear increment) and interleave (bit-inverted pattern), selected at mode register setup. Burst behavior is consistent across read and write operations, and burst termination is supported via the Burst Stop command for full-page bursts only.
W9825G6KH-5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- -
- Package/Case:
- 54-TSOP (0.400", 10.16mm Width)
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- DRAM
- Technology:
- SDRAM
- Memory Size:
- 256Mbit
- Memory Organization:
- 16M x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- 200 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:
- 54-TSOP II
W9825G6KH-5 FAQ
1.How can I place an order for W9825G6KH-5 through Aetrix?
Please submit a Request for Quotation (RFQ) for W9825G6KH-5 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 W9825G6KH-5 reliable?
The price and inventory of W9825G6KH-5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W9825G6KH-5 is usually 5 days.
3.What payment methods are accepted for W9825G6KH-5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W9825G6KH-5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W9825G6KH-5?
W9825G6KH-5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W9825G6KH-5 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 W9825G6KH-5?
For technical support, including W9825G6KH-5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W9825G6KH-5 requirements.
6.How does Aetrix verify that W9825G6KH-5 is sourced from the original manufacturer or authorized distributors?
All W9825G6KH-5 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 W9825G6KH-5 meets industry standards.
7.What is the process for return or replacement of W9825G6KH-5?
All W9825G6KH-5 units undergo pre-shipment inspection (PSI). If there is an issue with W9825G6KH-5, 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 W9825G6KH-5 part is unused and in its original packaging.
Return procedure for W9825G6KH-5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W9825G6KH-5 Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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AT24C04C-SSHM-T
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