W9812G6KH-6 - 128Mb SDRAM x16 166MHz 54-TSOP II | Winbond
N.º da peça: W9812G6KH-6 ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $4.21 | $4,21 |
| 10 | $3.95 | $39,50 |
| 100 | $3.42 | $342,00 |
| 500 | $2.98 | $1.490,00 |
| 1.000 | $2.65 | $2.650,00 |
W9812G6KH-6 Visão geral
A Synchronous DRAM (SDRAM) is a dynamic random-access memory that synchronizes its operation with an external clock, enabling pipelined, multi-bank burst access. Within the broader memory hierarchy, SDRAM sits between asynchronous DRAM and modern DDR/DDR2/3/4 SDRAM. This 128 Mb density represents the high end of single-chip SDRAM and is widely used in legacy MCUs, SoCs, FPGA soft-processors and consumer ASICs that integrate an SDRAM controller but no DDR PHY. The "-6" speed grade corresponds to a 166 MHz / 200 Mbps/pin class device.
Key features include four internal banks for concurrent operation, programmable CAS Latency of 2 or 3, a 64 ms refresh interval (8 K cycles), and 3.3 V single-supply operation with LVTTL-compatible I/O. The 54-pin TSOP II footprint is the industry-standard JEDEC pinout for 16-bit SDRAMs, ensuring socket compatibility with second-source parts. The device supports sequential, interleaved and burst-terminate burst modes, and offers low-power features including Power-Down and Self-Refresh modes.
The W9812G6KH-6 is fabricated on a CMOS process and is built around four banks of 2M x 16 cells, each with a sense-amplifier and row/column decoder pipeline. The 5 ns clock-to-access time at 166 MHz matches PC133 SDRAM timing, and the device is fully synchronous to the positive edge of the system clock. The interface uses a single 16-bit DQ bus shared by all banks, with separate DQM byte-mask controls to enable byte-write operations.
Typical applications include set-top boxes, network printers, IP cameras, point-of-sale terminals, and industrial HMI panels. It also serves as main memory for mid-range MCUs such as the Winbond W90N745, NXP i.MX family, and various FPGAs with embedded SDR controllers. The wide ecosystem of compatible second-source parts makes it a low-risk design choice.
When designing with the W9812G6KH-6, observe the JEDEC SDRAM 16-bit TSOP II routing topology - keep DQ/DQS/CLK traces matched within the prescribed skew window and provide a low-impedance VDD/SS plane beneath the package. Decoupling should use 0.1 uF ceramics at every VDD/VSS pair. Termination is generally not required for clock rates up to 166 MHz when traces are kept short.
This page synthesizes distributor pricing from DigiKey, Mouser, LCSC and Octopart, drop-in alternatives from the Winbond W9812G6KH speed-grade family, and cross-vendor pin-compatible replacements from the JEDEC 128 Mb x16 SDRAM category - data not aggregated in any single manufacturer datasheet.
Alternativas drop-in para W9812G6KH-6 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com W9812G6KH-6 (mesmo formato e footprint) — diferindo em Burst Length, CAS Latency, Memory Type, Organization, Package.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
W9812G6KH-6I TR
✅ Drop-In✓ Em estoque
$0.86 / unidade
Ver ficha técnica →W9812G6KH-5
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
W9812G6JH-6
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
W9812G6KH-6 TR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
IS42S16800F-6TLI
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MT48LC16M16A2P-75
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
W9812G6KH-6 Classificações máximas e características elétricas
| Tipo de memória | Synchronous DRAM (SDRAM) |
| Memory Density | 128 Mbit |
| Organização da memória | 2M words x 4 banks x 16 bits |
| Number of Banks | 4 |
| Tipo de interface | LVTTL |
| Largura do barramento de dados | 16 bit |
| Frequência máxima de clock | 166 MHz |
| Access Time | 5 ns |
| Taxa de dados | up to 200 M words/sec |
| Tensão de alimentação | 3.3 V |
| Latência CAS | 2 or 3 (programmable) |
| Refresh Interval | 64 ms (8K cycles) |
| Burst Length | 1, 2, 4, 8 and Full Page |
| Encapsulamento | 54-pin TSOP II |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
| Lead-Free / Halogen-Free | Yes (per Winbond product page) |
Configuração de pinos do W9812G6KH-6
| Pino 1 | VDD — Power supply 3.3V |
| Pino 2 | DQ0 — Data I/O line 0 |
| Pino 3 | VDDQ — DQ power supply 3.3V |
| Pino 4 | DQ1 — Data I/O line 1 |
| Pino 5 | DQ2 — Data I/O line 2 |
| Pino 6 | VSSQ — DQ ground |
| Pino 7 | DQ3 — Data I/O line 3 |
| Pino 8 | DQ4 — Data I/O line 4 |
| Pino 9 | VDDQ — DQ power supply 3.3V |
| Pino 10 | DQ5 — Data I/O line 5 |
| Pino 11 | DQ6 — Data I/O line 6 |
| Pino 12 | VSSQ — DQ ground |
| Pino 13 | DQ7 — Data I/O line 7 |
| Pino 14 | VSS — Ground |
| Pino 15 | DQML — DQ mask enable (low byte) |
| Pino 16 | WE# — Write enable (active low) |
| Pino 17 | CAS# — Column address strobe (active low) |
| Pino 18 | RAS# — Row address strobe (active low) |
| Pino 19 | CS# — Chip select (active low) |
| Pino 20 | BA0 — Bank address 0 |
| Pino 21 | BA1 — Bank address 1 |
| Pino 22 | A10/AP — Address 10 / Auto-precharge |
| Pino 23 | A0 — Address 0 |
| Pino 24 | A1 — Address 1 |
| Pino 25 | A2 — Address 2 |
| Pino 26 | A3 — Address 3 |
| Pino 27 | VDD — Power supply 3.3V |
| Pino 28 | VSS — Ground |
| Pino 29 | A4 — Address 4 |
| Pino 30 | A5 — Address 5 |
| Pino 31 | A6 — Address 6 |
| Pino 32 | A7 — Address 7 |
| Pino 33 | A8 — Address 8 |
| Pino 34 | A9 — Address 9 |
| Pino 35 | A11 — Address 11 |
| Pino 36 | NC — Not connected (per JEDEC standard, reserved) |
| Pino 37 | CKE — Clock enable |
| Pino 38 | CLK — System clock input |
| Pino 39 | DQMH — DQ mask enable (high byte) |
| Pino 40 | VSS — Ground |
| Pino 41 | DQ15 — Data I/O line 15 |
| Pino 42 | VSSQ — DQ ground |
| Pino 43 | DQ14 — Data I/O line 14 |
| Pino 44 | VDDQ — DQ power supply 3.3V |
| Pino 45 | DQ13 — Data I/O line 13 |
| Pino 46 | DQ12 — Data I/O line 12 |
| Pino 47 | VSSQ — DQ ground |
| Pino 48 | DQ11 — Data I/O line 11 |
| Pino 49 | DQ10 — Data I/O line 10 |
| Pino 50 | VDDQ — DQ power supply 3.3V |
| Pino 51 | DQ9 — Data I/O line 9 |
| Pino 52 | DQ8 — Data I/O line 8 |
| Pino 53 | VSS — Ground |
| Pino 54 | VDD — Power supply 3.3V |
Aplicações típicas
W9812G6KH-6 é adequado para 7 aplicaçãos: Set-Top Box Main Memory, Industrial HMI Panel Controller, Network Printer Image Buffer, FPGA Embedded Processor Memory, IP Camera Video Buffer, Point-of-Sale Terminal, Legacy Embedded Linux Workstation.
Set-Top Box Main Memory
The W9812G6KH-6 is widely used as the main working memory in set-top box designs, where its 128 Mbit density comfortably holds middleware, audio/video buffers and OSD graphics. The 166 MHz / 200 M words/sec bandwidth is sufficient for MPEG-2 decode where peak data rates are typically below 100 M words/sec. Paired with a host SoC that integrates an SDR controller (such as the STi5514 or Ali M3325 family), the W9812G6KH-6 provides the lowest-cost path to 16 MB of working RAM. Designers appreciate its 3.3 V single-supply operation, which simplifies power tree design versus DDR systems. Thermal performance is excellent - this device typically dissipates under 200 mW active, so no heatsinking is required in fanless STB enclosures.
Recomendado
Industrial HMI Panel Controller
Industrial HMI panels with 7-10 inch TFT displays need 16 MB of frame-buffer memory to drive the LCD controller and overlay graphics. The W9812G6KH-6 is a popular choice because its 54-TSOP II footprint is straightforward to route on 4-layer PCBs used in industrial designs, and its 3.3 V LVTTL interface connects directly to most LCD controller ASICs without level translation. The 166 MHz bandwidth handles QVGA/WVGA refresh without bus contention. Industrial designers typically select the W9812G6KH-6I variant for extended -40C to +85C operation. For higher-bandwidth HMI designs supporting full HD panels, engineers can substitute the W9812G6KH-5 (200 MHz) without changing the PCB layout.
Recomendado
Network Printer Image Buffer
Network printers use SDRAM as a print-data buffer between the network interface and the print engine. The W9812G6KH-6 provides the 16 MB capacity needed to buffer full-letter pages at 600 dpi, and its 166 MHz bandwidth sustains 30+ ppm print rates without bottleneck. The 54-TSOP II package is easy to hand-rework during prototyping and reflows reliably in production. Its low-power Power-Down and Self-Refresh modes help meet ENERGY STAR standby targets (<1 W). Compared with DDR alternatives, the W9812G6KH-6 keeps the bill of materials low because it does not require a 1.8 V rail or VTT termination, simplifying the printer's power architecture.
Recomendado
FPGA Embedded Processor Memory
FPGA soft-processors (Nios II, MicroBlaze, RISC-V cores) and SoC FPGAs with hard processor cores (Zynq-7000, Cyclone V) often use external SDRAM as program/data memory in cost-sensitive designs. The W9812G6KH-6 is fully supported by reference designs from Xilinx, Intel (Altera) and Lattice because it conforms to the JEDEC 16-bit SDRAM standard. Designers can achieve 32-bit or 64-bit buses by using two or four W9812G6KH-6 devices in parallel - a common configuration in FPGA development kits. The 5 ns access time pairs well with FPGA fabric performance at 100-150 MHz internal clock frequencies, and the part's known timing parameters simplify controller design.
Recomendado
IP Camera Video Buffer
IP cameras with 720p or 1080p H.264 streaming need temporary frame storage between the image sensor interface and the network/Ethernet MAC. The W9812G6KH-6 provides 16 MB of buffering, which is sufficient to hold at least two compressed H.264 frames for low-latency streaming. Its 166 MHz bandwidth supports 1080p at 30 fps without dropped frames. The 54-TSOP II package fits inside compact camera enclosures where PCB real estate is at a premium. Low-power Self-Refresh mode enables the camera to maintain buffered frames in standby without significantly increasing idle power, which is critical for PoE-powered designs.
Recomendado
Point-of-Sale Terminal
Point-of-sale (POS) terminals run real-time operating systems that need 8-16 MB of RAM for the OS, application code, transaction buffering and display frame buffer. The W9812G6KH-6 hits the 16 MB sweet spot and its 3.3 V LVTTL interface connects directly to common POS SoCs (NXP i.MX6ULL, MediaTek MT7687, etc.) without extra glue logic. Its mature second-source ecosystem - including ISSI IS42S16800F-6TLI and Micron MT48LC16M16A2P-75 - helps POS OEMs qualify dual vendors for long-lifecycle retail deployments that may run 7-10 years in the field.
Recomendado
Legacy Embedded Linux Workstation
Older embedded Linux designs based on ARM9, MIPS or PowerPC cores (circa 2005-2015) use SDRAM rather than DDR for power, cost and simplicity reasons. The W9812G6KH-6 is a standard memory choice for these designs because its 128 Mb density and 16-bit bus match the typical address/data configuration of mid-range SoCs. Boards designed around the Freescale i.MX27, Atmel AT91SAM9260 or Winbond W90N740 families often include footprint support for two W9812G6KH-6 chips to build a 32-bit memory bus. Modern redesigns can drop in the W9812G6KH-5 (200 MHz) directly for more headroom without changing PCB layout.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para W9812G6KH-6 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | W9812G6KH-6I | W9812G6KH-5 | W9812G6JH-6 | W9812G6KH-6 TR | IS42S16800F-6TLI | MT48LC16M16A2P-75 |
|---|---|---|---|---|---|---|---|
| Brand | Winbond | Winbond | Winbond | Winbond | Winbond | ISSI | Micron Technology |
| Package | 54-pin TSOP II | 54-pin TSOP II - same | 54-pin TSOP II - same | 54-pin TSOP II - same | 54-pin TSOP II - same | 54-pin TSOP II - same | 54-pin TSOP II - same |
| Memory Density | 128 Mbit | 128 Mbit | 128 Mbit | 128 Mbit | 128 Mbit | 128 Mbit | 128 Mbit |
| Organization | 2M x 4 banks x 16 | 2M x 4 banks x 16 | 2M x 4 banks x 16 | 2M x 4 banks x 16 | 2M x 4 banks x 16 | 2M x 4 banks x 16 | 2M x 4 banks x 16 |
| Maximum Clock Frequency | 166 MHz | 166 MHz | 200 MHz (faster) | 166 MHz | 166 MHz | 166 MHz | 133 MHz (slower) |
| Access Time | 5 ns | 5 ns | 5 ns | 5 ns | 5 ns | 5.4 ns | 7.5 ns |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Interface | LVTTL | LVTTL | LVTTL | LVTTL | LVTTL | LVTTL | LVTTL |
| Temperature Grade | Commercial | Industrial (-40C to +85C) | Commercial | Commercial | Commercial | Industrial (-40C to +85C) | Commercial |
Principais diferenciais
- Industry-standard JEDEC pinout with broad second-source ecosystem (vs IS42S16800F-6TLI)
- Wide temperature grade option in same package (vs MT48LC16M16A2P-75)
- Same-package speed grade upgrade path (vs W9812G6JH-6)
Notas de projeto
Route CLK, CKE, CS#, RAS#, CAS#, WE# as a tightly-matched bus with controlled impedance (50 ohm typical). Keep DQ/DQM trace lengths matched within +/- 0.5 inch of the clock trace to preserve timing margins at 166 MHz. Use a continuous VDD/VSS plane beneath the package and place 0.1 uF decoupling capacitors at every VDD/VSS pair, located within 100 mils of the pins.
The W9812G6KH-6 does not require source termination for clock rates up to 166 MHz when DQ/DQS traces are kept under 2 inches total length. For longer traces, a 22-33 ohm series resistor near the controller may improve signal integrity. Avoid splitting the VDDQ/VSSQ power planes beneath the DQ traces - keep them solid and continuous to maintain reference return paths.
The W9812G6KH-6 operates from a single 3.3 V supply with typical active current around 100 mA (full-page read) and standby current under 2 mA in Power-Down mode. Issue Self-Refresh commands before entering long idle periods to retain data while drawing only ~500 uA. Ensure VDD ramps monotonically and that CS# is held high during power-up to prevent spurious writes.
Do not operate the W9812G6KH-6 above 166 MHz clock rate - for 200 MHz operation, use the W9812G6KH-5 speed grade instead. Ensure the MODE REGISTER SET command is issued after every power-up and before any read/write operation, with proper tRSC timing (2 clock cycles) between commands. Do not leave any address/control input floating; tie all unused pins to valid logic levels.
Informações de conformidade
RoHS-compliant and lead-free/halogen-free packaging per Winbond product page. Not AEC-Q100 qualified - this is a commercial-grade memory IC intended for set-top boxes, networking and consumer applications.
