W971GG6JB-25I - 1Gb DDR2 SDRAM, 800MHz, Industrial | Winbond
MPN: W971GG6JB-25I ✓ NakahandaW971GG6JB-25I Ulas
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.
Mga alternatibo na pwedeng ilagay na W971GG6JB-25I — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok W971GG6JB-25I (parehas na form factor at footprint) — pagkakaiba sa Clock Frequency, Data Rate, Memory Type, Organization, Package.
W971GG6JB-25
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
W971GG6JB-25A
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
W971GG6JB-25L
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
W971GG6JB-25K
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
W971GG6JB-18
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
W971GG6NB-25 TR
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →W971GG6JB-25I Mga Pinakamataas na Rating at Electrical Characteristics
| Uri ng Memory | DDR2 SDRAM (volatile DRAM) |
| Density | 1 Gbit (128 MB) |
| Organisasyon | 8M x 8 banks x 16 bits (64M x 16) |
| Clock Frequency | 400 MHz (DDR2-800) |
| Rate ng Data | 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 |
| Packhaging | 84-ball WBGA (8 x 12.5 mm) |
| Temperature na Operasyon | -40 C to +85 C (industrial) |
| Tindminan RoHS | Compliant |
| Speed Grade Suffix | -25I (industrial) |
| Uri ng Pagpapasok | Surface Mount |
Gabay sa Pin Configuration ng W971GG6JB-25I 84-ball wbga (8 x 12.5 mm)
Pin configuration para sa W971GG6JB-25I (84-ball wbga (8 x 12.5 mm) package). Kasama sa digital IC na ito ang GPIO, mga communication interface (UART, SPI, I2C), at mga power pin. Sumangguni sa datasheet ng manufacturer para sa mga alternatibong function ng pin at mga opsyon sa configuration. Mahalaga para sa disenyo ng embedded system at PCB layout.
Wala ng detalyadong pinout data na magagamit para sa W971GG6JB-25I.
Sumangguni sa datasheet para sa buong pin configuration.
Tipikal na mga Gamit
W971GG6JB-25I ay nararapat para sa 6 aplikasyons: 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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for W971GG6JB-25I — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | 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 |
Pangunahing mga Pagkakaiba
- Industrial temperature grade (not commercial) (kumpara saW971GG6JB-25)
- Standard industrial speed (not automotive qualified) (kumpara saW971GG6JB-25A)
- DDR2-800 speed grade (not DDR2-1066) (kumpara saW971GG6JB-18)
Talaan ng Disenyo
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.
Impormasyon ng Pagsunod sa Kautusan
RoHS compliant per Winbond product page. Not AEC-Q100 qualified - use W971GG6JB-25A or -25K for automotive. Halogen-free per Winbond datasheet materials declaration.
