W971GG6JB-25I - 1Gb DDR2 SDRAM, 800MHz, Industrial | Winbond
MPN: W971GG6JB-25I ✓ Hoạt độngW971GG6JB-25I Tóm tắt
A DDR2 SDRAM (Double Data Rate 2 Synchronous DRAM) is a volatile dynamic random-access memory that transfers data on both clock edges, doubling the effective bus rate versus DDR1. It belongs to the hierarchy SDRAM -> DRAM -> volatile memory -> semiconductor, and is widely used as main working memory in embedded systems, set-top boxes, networking equipment, automotive infotainment, and graphics subsystems. The 'I' suffix indicates the industrial temperature grade (-40 C to +85 C).
Key features of the W971GG6JB-25I include 1.8 V SSTL_18 compatible I/O, on-die termination (ODT), programmable CAS latency (typically 5/6 for DDR2-800), and a 4-bit prefetch architecture. The device supports burst lengths of 4 and 8, on-die DLL for clock alignment, and selectable read/write termination strengths. The WBGA-84 package is JEDEC standard for DDR2 x16 devices, enabling drop-in compatibility with other vendors' x16 DDR2 SDRAMs of the same density and speed grade.
Architecturally, the W971GG6JB uses 8 internal banks to enable concurrent row activation across banks, hiding precharge and activate latencies. The -25I bin is qualified for industrial operation and is suitable for automotive non-safety applications where AEC-Q100 is not mandated. The 'A' and 'K' suffixes in the family target full automotive AEC-Q100 qualification.
Typical applications include automotive infotainment head units, industrial HMI panels, IPTV/set-top box main memory, networking line cards, and printer image buffers. It is also used in point-of-sale terminals and ruggedized industrial PCs that require a robust, JEDEC-standard DDR2 footprint.
When designing with this device, follow the JEDEC DDR2 layout guidelines: maintain matched-length trace pairs for DQ/DQS, place VTT termination at the middle of the bus, and provide proper decoupling (typically 0.1 uF plus bulk) near each VDD/VSS ball. A 50 ohm impedance for SSTL_18 signaling is recommended.
This page synthesizes distributor pricing, same-family DDR2 alternatives, and JEDEC-compliant layout notes not consolidated in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho W971GG6JB-25I — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với W971GG6JB-25I (cùng hình factor và footprint) — khác nhau ở Clock Frequency, Data Rate, Memory Type, Organization, Package.
W971GG6JB-25
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
W971GG6JB-25A
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
W971GG6JB-25L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
W971GG6JB-25K
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
W971GG6JB-18
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
W971GG6NB-25 TR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →W971GG6JB-25I Tỷ lệ tối đa & tính chất điện
| Kiểu bộ nhớ | DDR2 SDRAM (volatile DRAM) |
| Density | 1 Gbit (128 MB) |
| Tổ chức | 8M x 8 banks x 16 bits (64M x 16) |
| Clock Frequency | 400 MHz (DDR2-800) |
| Tốc độ dữ liệu | 800 Mb/s/pin |
| Max Transfer Rate | 1066 Mb/s/pin (family max) |
| Supply Voltage (VDD/VDDQ) | 1.8 V |
| Interface Level | SSTL_18 |
| Number of Banks | 8 |
| Burst Length | 4 / 8 |
| On-Die Termination | Yes (ODT, programmable) |
| On-Die DLL | Yes |
| Hộp | 84-ball WBGA (8 x 12.5 mm) |
| Nhiệt độ hoạt động | -40 C to +85 C (industrial) |
| Trạng thái RoHS | Compliant |
| Speed Grade Suffix | -25I (industrial) |
| Kiểu lắp đặt | Surface Mount |
Hướng dẫn cấu hình chân W971GG6JB-25I 84-ball wbga (8 x 12.5 mm)
Cấu hình chân cho W971GG6JB-25I (84-ball wbga (8 x 12.5 mm) gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho W971GG6JB-25I.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
W971GG6JB-25I phù hợp cho 6 Áp dụngs: Automotive Infotainment Head Unit, Industrial HMI Panel, IPTV / Set-Top Box Main Memory, Networking Line Card / Router, Printer / MFP Image Buffer, Point-of-Sale (POS) Terminal.
Automotive Infotainment Head Unit
The W971GG6JB-25I provides 128 MB of DDR2-800 working memory for automotive infotainment main processors. Its 1.8 V SSTL_18 interface matches common SoC memory controllers (e.g., NXP i.MX6, Renesas R-Car), and the 84-ball WBGA outline routes cleanly on a 4-layer PCB. With 64M x 16 organization and 800 MT/s bandwidth, it supplies sufficient throughput for HMI rendering, navigation map caching, and audio codec buffers. Industrial -40 C to +85 C temperature supports in-cabin environments. For AEC-Q100 fuel, choose the -25A variant.
Được đề xuất
Industrial HMI Panel
The W971GG6JB-25I serves as main memory in industrial HMI panels (operator interfaces, PLC touchscreens, machine control displays). The 1 Gbit density holds RTOS/Linux workspaces plus graphical framebuffers, while DDR2-800 bandwidth keeps touch response latency under 16 ms. Industrial temperature rating (-40 C to +85 C) handles factory-floor thermal stress, and the 84-ball WBGA supports long-life industrial product cycles (10+ years). The JEDEC standard footprint ensures second-source availability across the DDR2 vendor ecosystem.
Được đề xuất
IPTV / Set-Top Box Main Memory
In IPTV and set-top box designs, the W971GG6JB-25I provides 128 MB of DDR2-800 working memory for the decoder SoC. Its bandwidth (12.8 GB/s peak on a x16 bus) is sufficient for H.264/H.265 stream decode buffers and on-screen display compositing. The 1.8 V operation simplifies power tree design versus DDR3, reducing BOM cost for cost-sensitive consumer STB platforms. The 84-ball WBGA fits typical STB mainboard layouts and is qualified by major decoder SoC vendors.
Được đề xuất
Networking Line Card / Router
The W971GG6JB-25I is well-suited for networking line cards and router control planes requiring reliable DDR2 working memory. Its 64M x 16 organization and 800 MT/s data rate support packet buffer descriptors, routing tables, and forwarding engine memory. The industrial temperature range handles outdoor cabinet and central-office environments. ODT and SSTL_18 signaling maintain signal integrity on long backplane traces typical of modular networking equipment, while the JEDEC WBGA-84 outline is the de facto industry standard for 1 Gbit DDR2.
Được đề xuất
Printer / MFP Image Buffer
Office printers and multifunction peripherals (MFPs) use the W971GG6JB-25I as a high-bandwidth image buffer between the scanner, RIP engine, and print engine. Its 1 Gbit density holds uncompressed A4/Letter raster pages (up to ~32 MB at 600 dpi CMYK), while DDR2-800 bandwidth sustains page rasterization at engine speeds up to 60 ppm. The industrial temperature rating accommodates the elevated ambient inside printer enclosures. The 84-ball WBGA package is easy to assemble on standard SMT lines.
Được đề xuất
Point-of-Sale (POS) Terminal
Retail point-of-sale terminals use the W971GG6JB-25I as main working memory for their application processor. DDR2-800 with 64M x 16 organization runs the POS application stack, transaction queue, and encrypted PIN pad buffer simultaneously. The industrial -40 C to +85 C temperature range handles store environments (cold storage aisles to hot kitchen back-of-house). The 1.8 V supply simplifies battery-backed operation for mobile POS terminals, and the long-life DDR2 supply (vs DDR3/DDR4) protects multi-year POS deployments.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho W971GG6JB-25I — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | W971GG6JB-25 | W971GG6JB-25A | W971GG6JB-25L | W971GG6JB-25K | W971GG6JB-18 | W971GG6NB-25 |
|---|---|---|---|---|---|---|---|
| Brand | Winbond | Winbond | Winbond | Winbond | Winbond | Winbond | Winbond |
| Package | WBGA-84 (8x12.5 mm) | WBGA-84 - same | WBGA-84 - same | WBGA-84 - same | WBGA-84 - same | WBGA-84 - same | WBGA-84 (8x12.5 mm) - same |
| Density | 1 Gbit | 1 Gbit | 1 Gbit | 1 Gbit | 1 Gbit | 1 Gbit | 1 Gbit |
| Speed Grade | DDR2-800 (400 MHz) | DDR2-800 | DDR2-800 | DDR2-800 | DDR2-800 | DDR2-1066 (533 MHz) | DDR2-800 (400 MHz) |
| Organization | 64M x 16 | 64M x 16 | 64M x 16 | 64M x 16 | 64M x 16 | 64M x 16 | 64M x 16 |
| Temperature Grade | Industrial (-40C to +85C) | Commercial (0C to +70C) | Automotive AEC-Q100 | Industrial (low-power) | Automotive AEC-Q100 K-grade | Industrial (DDR2-1066) | Industrial |
| AEC-Q100 Qualified | No | No | Yes | No | Yes | No | No |
| Supply Voltage | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V |
Bảo phân biệt quan trọng
- Industrial temperature grade (not commercial) (vsW971GG6JB-25)
- Standard industrial speed (not automotive qualified) (vsW971GG6JB-25A)
- DDR2-800 speed grade (not DDR2-1066) (vsW971GG6JB-18)
Ghi chú thiết kế
Follow JEDEC DDR2 layout guidelines: route DQ/DQS as matched-length pairs (within +/-25 mil) with 50 ohm single-ended impedance to VTT (0.9 V). Keep trace lengths short and reference to a solid ground plane. Place VTT termination resistors at the midpoint of the bus, not at the controller. Decouple each VDD/VDDQ/VSSQ ball group with a 0.1 uF X7RCM711 ceramic plus a 10 uF bulk capacitor within 100 mil.
SSTL_18 signaling requires a VTT termination voltage of VDDQ/2 = 0.9 V generated by a high-current LDO or DDR termination regulator (e.g., TPS51200, LP2996). Enable on-die termination (ODT) on the W971GG6JB-25I via the mode register to reduce external component count. Use IBIS simulation to validate signal integrity on your specific stack-up, especially for backplane routing.
Do not assume -25I bin supports DDR2-1066 - the 'I' indicates industrial temperature, not higher speed. For DDR2-1066 operation, use the -18 bin. Also avoid confusing -25I (industrial) with -25A/-25K (AEC-Q100 automotive); they share the same die but differ in qualification. Finally, do not populate DDR2 without VTT - floating VTT causes bus errors and potential device damage.
Thông tin tuân thủ
RoHS compliant per Winbond product page. Not AEC-Q100 qualified - use W971GG6JB-25A or -25K for automotive. Halogen-free per Winbond datasheet materials declaration.
