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W25Q40BVSNIG - 4Mb Serial NOR Flash SPI/Quad-SPI | Winbond
The Winbond W25Q40BVSNIG is a 4M-bit (512K x 8) serial NOR flash memory with Dual SPI and Quad SPI support, housed in an 8-pin SOIC-150 package. It operates from 2.7V to 3.6V supply, delivers up to 104 MHz clock rate in standard SPI mode (50 MHz for Quad SPI reads), and provides 4 Mbit (512 KB) of non-volatile storage organized as 65,536 pages of 256 bytes each or 2,048 sectors of 4 KB. A NOR flash memory is a non-volatile storage technology that retains data without power and supports byte-level random access and execute-in-place (XIP) operation. Within the memory hierarchy, NOR flash sits between SRAM (volatile, fast, expensive) and NAND flash (non-volatile, large block, slower random access), offering fast read access and reliable long-term data retention. NOR flash is commonly used for code storage, firmware boot, configuration parameters, and data logging in embedded systems. Key features include 100,000 erase/program cycles per sector endurance, 20-year data retention, low power consumption with 1 mA active read current at 50 MHz and 1 uA power-down current, and a uniform 4 KB sector erase granularity. The device supports JEDEC-standard 3-byte addressing with an option for 4-byte address mode, and offers hardware and software write protection via status register bits and a dedicated WP pin. The W25Q40BVSNIG uses a standard SPI interface with optional Dual-SPI (DIO/DOUT) and Quad-SPI (QIO/QOUT) modes that multiply throughput up to 4x compared to standard SPI. The integrated 256-byte page buffer and 4 KB sector erase make it suitable for both code shadowing to RAM and direct parameter storage. Security features include a 64-bit unique ID, three 256-byte security registers for OTP storage, and individual block locking. Typical applications include IoT device firmware storage, consumer electronics boot code, industrial sensor data logging, smart home devices, networking equipment configuration memory, and battery-powered portable electronics requiring small-footprint non-volatile storage. The 8-pin SOIC package allows easy hand-soldering and standard PCB reflow profiles. When designing with this device, ensure the SPI master supports the maximum 104 MHz clock in single I/O mode and observe the timing parameters in the Winbond datasheet. Use of Quad SPI mode requires firmware to issue the correct enable command (0x38) before reading, and the WP and HOLD pins must be properly biased to avoid spurious mode entry. This page synthesizes distributor pricing, drop-in alternatives (including the newer W25Q40EWSNIG revision), and practical design notes not consolidated in the manufacturer datasheet.
W25Q64JVSSIG - 64Mb SPI Flash 133MHz Industrial | Winbond
The Winbond W25Q64JVSSIG is a 64M-bit (8MB) serial NOR flash memory with Dual/Quad SPI and QPI support, operating at 3V to 3.6V and clock speeds up to 133 MHz, housed in an 8-pin SOP (208-mil, SS / SOIC-8) package. The IG suffix denotes the industrial temperature range of -40C to +85C. A serial NOR flash memory is a non-volatile storage IC that stores data in a NOR cell array and communicates over a serial peripheral interface (SPI). Unlike NAND flash, NOR flash offers random access to any address, making it the standard choice for code storage (XIP - execute in place) in embedded systems. It sits within the memory hierarchy: SPI NOR flash -> NOR flash -> flash memory -> semiconductor memory. Key features include Quad SPI with up to 133 MHz clock (equivalent to 532 Mbps transfer), QPI (Quad Peripheral Interface) mode for faster command handling, DTR (Double Transfer Rate) support on JV variants, a 256-byte page program buffer, 4KB sectors, 32KB/64KB blocks, and hardware/software write protection. Advanced security features include individual block lock-down and a 64-bit unique ID, with the G suffix indicating Winbond's industrial-grade flow. The device uses Winbond's proven serial flash architecture with fast erase times and low power consumption, featuring a deep power-down mode that reduces standby current to microamp levels - critical for battery-powered designs. JEDEC SFDP support simplifies second-sourcing against compatible parts. Typical applications include embedded code storage for microcontrollers and DSPs, Wi-Fi/Bluetooth module firmware, BIOS/UEFI storage on industrial PCs, LCD/OLED display drivers, and IoT sensor nodes. Design tip: enable the QE (Quad Enable) bit in the status register for quad operation, and verify JEDEC SFDP compatibility when second-sourcing against GigaDevice GD25Q64 parts. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. Pricing references are as of 2026-09-06.
W25X40CLZPIG - 4Mbit SPI NOR Flash, 104MHz, 8-WSON | Winbond
The Winbond W25X40CLZPIG is a 4 Mbit SPI NOR flash memory IC operating at up to 104 MHz clock frequency in an 8-pin WSON (6x5 mm) package with exposed pad. It provides 512K x 8 organization with uniform 4 KB sectors and supports standard SPI, Dual SPI, and Quad SPI instruction sets. The device operates from 2.5V to 3.3V supply, delivering low-power, high-throughput non-volatile storage for embedded systems. A NOR flash memory is a type of non-volatile storage that retains data without power and supports execute-in-place (XIP) operation, where the CPU can read instructions directly from the flash instead of copying them to RAM first. Within the broader semiconductor taxonomy, NOR flash belongs to the non-volatile memory family (alongside NAND flash and EEPROM) and is widely used for code storage and firmware in microcontrollers, IoT devices, and consumer electronics where random read latency matters more than write density. Key features include 104 MHz maximum clock rate, 4 KB uniform sector granularity, page program up to 256 bytes per command, sector erase time of 40 ms typical, and JEDEC-standard manufacturer/device ID reading. The W25X40CLZPIG also offers hardware and software write protection via the /WP pin and STATUS register, plus an internal 3-byte unique ID for security. The architecture uses a single-transistor NOR cell array with hot-electron-injection programming and Fowler-Nordheim tunneling erase, controlled by an embedded state machine. Winbond's proprietary SpiFlash command set allows bit-shifted SPI mode enabling Dual I/O (DIO) for doubled throughput or Quad I/O (QIO) for quadrupled throughput without changing pin count. Typical applications include firmware storage for IoT sensors, boot code in industrial controllers, configuration storage in smart-home devices, data logging in metering equipment, and parameter storage in wearable devices. Compared with NAND flash, NOR flash offers faster random reads at the cost of lower density per dollar. When designing with this part, place a 0.1 uF decoupling capacitor close to the VCC pin and provide a clean GND return path to the exposed pad, which also acts as the chip's main thermal path. Avoid long SPI traces - keep traces under 50 mm or use a series resistor to dampen ringing on the SCK line. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
W25X40CLZPIG-TR - 4Mbit SPI NOR Flash 104MHz 8-WSON | Winbond
The Winbond W25X40CLZPIG-TR is a 4 Mbit (512 Kbit x 8) serial NOR Flash memory device with SPI and Dual-SPI bus interface, operating at up to 104 MHz clock frequency in an 8-pin WSON (6x5 mm) package with exposed pad. It supports 2.5V/3.3V operating voltage and offers 4 KB uniform sector architecture with hardware and software write protection. A serial NOR flash is a non-volatile memory that stores data persistently and communicates over a low pin-count SPI bus. The W25X40 belongs to the spiFlash family, a category of small-footprint flash memories widely used for boot code, firmware, and configuration storage in embedded systems. Compared to parallel NOR flash, spiFlash devices trade raw bandwidth for fewer pins (4-8 vs. 32+), enabling compact PCB layouts in cost-sensitive designs. Key features of the W25X40CLZPIG-TR include 104 MHz maximum SPI clock, 8 ns access time, page program (up to 256 bytes per command), 4 KB sector erase granularity, 32 KB and 64 KB block erase options, hardware write-protect pin, software write-protection via status register, JEDEC standard manufacturer and device ID read, and an operating temperature range of -40C to +85C. The 8-WSON package with exposed pad provides a small footprint (6 mm x 5 mm) and good thermal dissipation. The W25X40CLZPIG-TR uses a single 2.5V to 3.3V supply and is fully static, requiring no external clock. Internally the device implements a state-machine-based command interpreter that decodes instruction opcodes (Read, Page Program, Sector/Block Erase, Read Status, etc.) issued over the SPI bus. Dual-SPI mode doubles throughput by using two data lines for read operations, useful for XIP (execute-in-place) boot from flash. Typical applications include router and home gateway firmware storage, set-top box boot loaders, IoT device firmware, industrial sensor data logging, and Bluetooth/Wi-Fi module configuration storage. It is frequently paired with low-cost MCUs that lack internal flash of sufficient capacity. When designing with this part, place a 0.1 uF decoupling capacitor as close as possible to the VCC pin and connect the exposed pad to a solid ground plane for thermal relief. The /WP and /HOLD pins should be tied to VCC via pull-ups if unused, to prevent accidental write protection or bus stalls during firmware updates. This page consolidates distributor pricing, same-brand and cross-brand drop-in alternatives, and practical design notes beyond what the Winbond datasheet alone provides, helping engineers select and source the right SPI flash for cost-sensitive embedded designs.
W29EE011P-90 - 1Mb 5V Parallel Flash, 90ns, 32-PLCC | Winbond
The Winbond W29EE011P-90 is a 1-megabit (128K x 8) CMOS parallel flash memory with 90 ns access time, organized as 128K bytes and packaged in a 32-pin PLCC. It operates from a single 5V supply and supports in-system program and erase operations without requiring a 12V VPP. A flash memory is a non-volatile storage technology that retains data when power is removed and supports electrical erase and program cycles in circuit. The W29EE011P-90 sits within the memory IC hierarchy as a parallel NOR flash, distinct from serial SPI flash (fewer pins, lower pin count) and NAND flash (higher density, page/block oriented). Parallel NOR flash is the legacy choice for code storage in 8-bit and 16-bit microcontrollers, EPROM replacement, and firmware boot ROMs where byte-level random access and simple bus interface are required. The W29EE011P-90 features 90 ns maximum access time, sector/chip erase capability, and CMOS low-power operation. It is designed as a drop-in replacement for legacy 5V EPROMs and standard 1-Mbit flash devices. The 32-PLCC package provides a JEDEC-standard pinout compatible with the industry 1-Mbit parallel flash footprint, simplifying board-level migration from older AMD/Atmel/ST 28F001 or 29EE011 sockets. Typical applications include embedded firmware storage for industrial controllers, legacy 8051/68HC11/MCS-96 system boot memory, BIOS and firmware update banks, point-of-sale terminals, and industrial PLC code storage. The 90 ns access time supports microcontrollers running at up to approximately 8 MHz without wait states. When designing with this part, note that the 32-PLCC package requires a PLCC socket or careful reflow profile for surface-mount assembly. Verify the device's command set (byte programming, sector erase, chip erase) against your firmware's flash algorithm before substitution. The part is suitable for 5V-only systems; it does not support 3.3V operation.
W29N01HVBINF - 1Gbit 3V SLC NAND Flash 63-VFBGA | Winbond
The Winbond W29N01HVBINF is a 1 Gbit (128 M x 8) Single-Level Cell (SLC) NAND Flash memory organized as 1024 blocks of 64 KB each, supplied in a compact 63-ball VFBGA (9 mm x 11 mm) package. It operates from a single 3.0 V power supply (2.7 V to 3.6 V) and provides asynchronous x8 parallel I/O with typical page-read access of 25 ns, making it well suited for embedded code and data storage where reliability and endurance matter more than raw throughput. NAND Flash is a non-volatile memory technology that stores bits as charge on a floating-gate MOSFET cell. SLC NAND stores one bit per cell, which delivers 10x the endurance and 10x the data retention of MLC or TLC NAND at the cost of lower density per die. Within the storage taxonomy, NAND Flash sits below NOR Flash for code execution and below DRAM for volatile working memory, but above raw EEPROM in density-per-area. The 1 Gbit SLC class targets boot-loaders, firmware images, and transaction logs in set-top boot boxes, industrial HMIs, and IoT gateways where predictable write performance and 100 K P/E cycles are non-negotiable. Key features of the W29N01HVBINF include ONFI 1.0 compatibility, an internal 4-bit ECC engine that corrects up to 4 bit errors per 528-byte sector, a 2112-byte page size (2048 data + 64 spare), a block erase time of 2 ms typical, and a page program time of 250 us typical. The chip supports two ground pins for noise isolation, a hardware write protect pin, and a HOLD# pin that allows the host to pause operations mid-bus cycle without de-asserting chip enable. Architecturally the W29N01HVBINF uses a charge-trap-compatible floating-gate cell array with on-chip charge pumps generating the high voltages required for program and erase operations, so the host only supplies 3.3 V. The integrated ECC reduces host CPU load and corrects soft errors that occur naturally during the operational lifetime of the NAND array, which is critical because raw NAND bit error rate (RBER) climbs as the part approaches its end-of-life P/E count. Typical applications include set-top box firmware storage, industrial IoT gateways, eMMC boot, point-of-sale terminals, and automotive infotainment reference data. Designers choose this Winbond SLC when they need ONFI-compliant timing for an existing host controller, or when they need a second-source drop-in part for a Samsung or Toshiba SLC die. A key design consideration is that the W29N01HVBINF requires 4-bit ECC for every read of 528 bytes; disabling ECC on the host side will reduce endurance and reliability significantly, and is not recommended by the manufacturer. Always sequence WP#, HOLD#, and CE# transitions per the AC timing diagram in section 4 of the manufacturer datasheet. This page synthesizes distributor pricing, ONFI-compatible drop-in equivalents, and practical hardware-design notes not found in the manufacturer datasheet alone.
W29N01HVBINF-TR - 1Gb 3V SLC NAND Flash, 63-VFBGA | Winbond
The Winbond W29N01HVBINF-TR is a 1 Gbit (128 MB) Single-Level Cell (SLC) NAND Flash memory organized as an 8-bit multiplexed I/O bus and housed in a 63-ball VFBGA (9x11 mm) package. It operates from a 2.7V to 3.6V single supply with a typical 20 ns random-access time and ONFI 1.0 compliance. The device uses a 2048 + 64 byte page architecture and supports the standard NAND command set including program, read, erase, and copy-back operations. A NAND Flash memory is a non-volatile storage technology that retains data without power by storing charge on floating-gate transistors. SLC NAND stores one bit per cell, delivering the highest endurance (typically 100k P/E cycles), fastest write speeds, and longest data retention among NAND types - making it the preferred choice for code storage, boot media, and industrial data logging where MLC/TLC reliability would be inadequate. The W29N-HV family sits in the ONFI 1.0 standard ecosystem (NAND Flash -> non-volatile memory -> memory IC -> semiconductor), allowing seamless software reuse across vendors. Key features include a 1 Gbit density in the smallest standard NAND footprint, hardware WP# (Write Protect) and R/B# (Ready/Busy) status pins, 4-bit ECC requirement per 528 bytes, and an extended operating temperature range suitable for industrial applications. The device uses a 3V VCC for both the core and I/O, simplifying power-tree design by removing the 1.8V requirement common to higher-density parts. Typical applications include embedded Linux/Android boot storage on routers, set-top boxes, and IoT gateways; firmware and asset-log retention in industrial control and metering equipment; data logging in automotive infotainment and telematics modules; and code shadowing from NOR/ROM to faster NAND in consumer electronics. The 63-VFBGA package is footprint-compatible with the wider Winbond W29N family, enabling PCB reuse across 1 Gb to higher densities. When designing with this part, ensure the host controller or SoC implements the ONFI 1.0 software driver and a BCH or Hamming ECC engine capable of 4-bit correction per 528-byte sector. For long-term reliability, apply wear-leveling at the file-system (e.g., UBI/YAFFS/JFFS2) or FTL layer, because raw NAND blocks wear out at the rated P/E cycle count. This page synthesizes Winbond datasheet specifications, current distributor pricing, drop-in alternatives, and practical design notes not consolidated on any single manufacturer or distributor page. The W29N01HVBINF-TR is halogen-free and RoHS compliant per the Winbond product page. The 'TR' suffix denotes Tape and Reel packaging suitable for high-volume SMT assembly.
W634GU6RB-09 - 4Gb DDR3L SDRAM 1066MHz | Winbond
The W634GU6RB-09 is a 4Gbit DDR3L SDRAM memory IC from Winbond Electronics, organized as 512M x 8 bits. It operates at a clock frequency of 1.067 GHz (1066 MHz) with a data rate of 2133 Mbps per pin, and features a parallel interface with a 20 ns access time. The device is housed in a 96-ball VFBGA package measuring 7.5x13 mm, designed for surface mount assembly. DDR3L SDRAM (Double Data Rate 3 Low Voltage Synchronous Dynamic Random-Access Memory) is a type of volatile memory that operates at a lower supply voltage of 1.35V, reducing power consumption compared to standard DDR3 (1.5V). It is part of the DDR3 family, which uses double data rate signaling to transfer data on both edges of the clock, and is widely used in computing, networking, and embedded systems for high-bandwidth data storage and processing. Key features include a 4Gbit density, 1.35V supply voltage, 1066 MHz clock speed, and a 96-ball VFBGA package. The low voltage operation makes it ideal for power-sensitive applications, while the high speed supports demanding workloads. The device is RoHS compliant and halogen-free, meeting modern environmental standards. Technically, the W634GU6RB-09 uses an 8n-prefetch architecture typical of DDR3L, enabling high burst lengths and efficient data transfer. The 20 ns access time indicates the row-to-column delay, and the 1.067 GHz clock allows data rates up to 2133 Mbps. The VFBGA package offers excellent thermal and electrical performance, with a compact footprint suitable for space-constrained designs. Typical applications include high-performance computing, networking equipment, embedded systems, and industrial automation. The low power consumption and high speed make it suitable for servers, routers, and IoT gateways where memory bandwidth and efficiency are critical. When designing with this device, ensure proper decoupling capacitors near the power pins and follow the layout guidelines in the datasheet to maintain signal integrity at high frequencies. The 1.35V supply must be regulated accurately to avoid data corruption.
W634GU6RB-09TR - 4Gb DDR3L SDRAM 1.35V | Winbond
The W634GU6RB-09TR is a 4Gbit DDR3L SDRAM memory IC from Winbond Electronics, organized as 256M x 16 bits. It operates at a clock frequency of 1.067 GHz (DDR3L-2133) with a CAS latency of 20 ns, and is supplied in a 96-ball VFBGA package measuring 7.5x13 mm. This device is designed for low-voltage operation at 1.35V, reducing power consumption by approximately 15% compared to standard DDR3 at 1.5V, making it ideal for power-sensitive applications. DDR3L SDRAM (Double Data Rate 3 Low Voltage) is a type of synchronous dynamic random-access memory that transfers data on both edges of the clock signal, effectively doubling the data rate. It operates at a lower voltage (1.35V) than standard DDR3 (1.5V), which reduces power consumption and heat generation, making it suitable for mobile and embedded systems. DDR3L is part of the DDR SDRAM family, which includes DDR, DDR2, DDR3, and DDR4, each offering higher speeds and lower voltages. Key features of the W634GU6RB-09TR include a parallel interface with a 16-bit data bus, a burst length of 8, and support for on-die termination (ODT) and programmable CAS latency. It also features auto-refresh and self-refresh modes to maintain data integrity with minimal power. The device is RoHS compliant and halogen-free, meeting environmental standards for modern electronics. Technically, the W634GU6RB-09TR uses a 96-ball VFBGA package with a 0.8 mm ball pitch, providing excellent thermal and electrical performance. The device supports a wide operating temperature range from 0°C to 95°C (case temperature), making it suitable for industrial applications. It also features a programmable output driver impedance and supports DLL (Delay-Locked Loop) for precise timing. Typical applications include embedded systems, networking equipment, industrial automation, and consumer electronics such as set-top boxes and routers. Its low voltage and high density make it ideal for designs requiring large memory capacity with limited power budgets. When designing with this device, ensure proper decoupling capacitors are placed near the power pins to minimize noise. Also, follow the PCB layout guidelines in the datasheet to maintain signal integrity at high speeds.
W634GU6RB-11 - 4Gb DDR3L SDRAM 933MHz | Winbond
The W634GU6RB-11 is a 4Gbit DDR3L SDRAM memory IC from Winbond Electronics, organized as 256M x 16 bits. It operates at a clock frequency of 933 MHz (DDR3L-1866) with a CAS latency of 20 ns, and is supplied in a 96-ball VFBGA (7.5x13 mm) package. This device is designed for low-power applications, operating from a 1.35V supply (1.283V to 1.45V range), and supports parallel interface with a data rate of 1866 MT/s. DDR3L (Double Data Rate 3 Low Voltage) SDRAM is a type of synchronous dynamic random-access memory that transfers data on both edges of the clock signal, effectively doubling the data rate. It is a low-voltage variant of DDR3, operating at 1.35V instead of the standard 1.5V, reducing power consumption by about 20% compared to standard DDR3. DDR3L is part of the DDR SDRAM family, which includes DDR, DDR2, DDR3, and DDR4, and is widely used in computing, networking, and embedded systems where high bandwidth and low power are critical. Key features of the W634GU6RB-11 include auto self-refresh, auto precharge, data mask, write leveling, ZQ calibration, asynchronous reset, and dynamic on-chip termination (ODT). These features enhance signal integrity and simplify system design. The device supports a temperature range of -40°C to +95°C, making it suitable for industrial applications. It is RoHS compliant and halogen-free, aligning with environmental standards. Technically, the W634GU6RB-11 utilizes a 96-ball VFBGA package with a 7.5x13 mm footprint, offering a compact solution for space-constrained designs. The 20 ns CAS latency ensures fast access times, while the 933 MHz clock speed provides high bandwidth for data-intensive tasks. The device includes on-die termination (ODT) to improve signal quality on the memory bus, and supports write leveling for improved timing margins in multi-rank configurations. Typical applications include networking equipment (routers, switches), industrial computing, embedded systems, and consumer electronics such as set-top boxes and smart TVs. Its low voltage and high density make it ideal for power-sensitive designs where performance and efficiency are balanced. When designing with this device, ensure proper decoupling capacitors are placed near the VDD and VDDQ pins to minimize noise. Also, follow the JEDEC DDR3L layout guidelines for signal integrity, especially for high-speed signals. The device supports a 1.35V supply, so verify that the power management IC provides a stable 1.35V rail.
W634GU6RB-11TR - 4Gb DDR3L SDRAM 933MHz | Winbond
The W634GU6RB-11TR is a 4Gbit DDR3L SDRAM memory IC from Winbond Electronics, organized as 256M x 16 bits. It operates at a clock frequency of 933 MHz (DDR3L-1866) with a CAS latency of 13, and features a parallel interface with a 20 ns access time. The device is housed in a compact 96-ball VFBGA (7.5x13 mm) package, making it suitable for space-constrained applications requiring high memory density. DDR3L (Double Data Rate 3 Low Voltage) SDRAM is a type of synchronous dynamic random-access memory that operates at a lower voltage (1.35V) compared to standard DDR3 (1.5V), reducing power consumption by up to 20% while maintaining similar performance. It is part of the memory hierarchy in computing systems, serving as the main working memory for processors, and is widely used in laptops, embedded systems, networking equipment, and industrial applications. Key features of the W634GU6RB-11TR include support for 1.35V operation (with 1.5V compatibility), auto self-refresh, auto precharge, data mask, write leveling, ZQ calibration, asynchronous reset, and dynamic on-chip termination (ODT). These features enhance signal integrity and simplify system design. The device is RoHS compliant and halogen-free, meeting environmental standards. Technically, the W634GU6RB-11TR uses a 96-ball VFBGA package with a 0.8mm ball pitch, providing excellent thermal and electrical performance. The 933 MHz clock rate enables data rates up to 1866 MT/s, delivering high bandwidth for demanding applications. The device supports a temperature range of -40°C to +95°C, making it suitable for industrial environments. Typical applications include embedded computing, networking routers and switches, industrial automation, and high-performance consumer electronics. Its low voltage and high density make it ideal for power-sensitive designs. When designing with this memory, ensure proper decoupling capacitors near the VDD and VDDQ pins, and follow the PCB layout guidelines in the datasheet to minimize signal integrity issues at high speeds.
W634GU6RB-12 - 4Gb DDR3L SDRAM x16 933MHz | Winbond
The W634GU6RB-12 is a 4Gbit DDR3L SDRAM from Winbond Electronics, organized as 256M x 16, operating at 1.35V with a parallel interface. It is housed in a 96-ball VFBGA (7.5x13mm) package and supports DDR3L-1600 (11-11-11) speed grade at 933 MHz clock. This memory IC is designed for high-bandwidth applications requiring low power consumption and high reliability. DDR3L SDRAM is a type of double data rate synchronous dynamic random-access memory that operates at a lower voltage (1.35V) compared to standard DDR3 (1.5V), reducing power consumption by up to 20% while maintaining similar performance. It is part of the DDR3 memory family, which uses 8n-prefetch architecture and on-die termination to achieve high data rates. DDR3L is widely used in mobile, embedded, and industrial systems where power efficiency is critical. Key features include a 4Gbit density, x16 organization, 933 MHz clock speed (DDR3L-1600), 20 ns tRCD, and a 96-ball VFBGA package. The device supports industrial temperature grades: the -12I grade guarantees -40°C to 95°C case temperature, and the -12J grade guarantees -40°C to 105°C. It is RoHS compliant and halogen-free, meeting environmental standards. The W634GU6RB-12 utilizes advanced DRAM process technology, offering high-speed data transfer with low power consumption. The 8n-prefetch architecture enables burst lengths of 8, and the on-die termination (ODT) improves signal integrity. The device includes programmable CAS latency, burst length, and output drive strength, providing flexibility for system optimization. Typical applications include networking equipment, industrial automation, embedded computing, and consumer electronics such as set-top boxes and smart TVs. The low voltage and high density make it ideal for space-constrained designs requiring large memory capacity. When designing with this device, ensure proper decoupling capacitors near the VDD and VDDQ pins, and follow the PCB layout guidelines in the datasheet to minimize signal integrity issues. The device requires a 1.35V supply and a separate VDDQ supply, which should be well-regulated.
W634GU6RB09I - 4Gb DDR3L SDRAM x16 1066MHz | Winbond
The W634GU6RB09I is a 4Gbit DDR3L SDRAM memory IC from Winbond Electronics, organized as 256M x 16 bits. It operates at a clock frequency of 1.067 GHz (DDR3L-2133) with a CAS latency of 20 ns, and is housed in a 96-ball VFBGA (7.5x13 mm) package. This device is designed for low-voltage operation at 1.35V, making it suitable for power-sensitive applications such as mobile devices, embedded systems, and networking equipment. DDR3L (Double Data Rate 3 Low Voltage) is a type of synchronous dynamic random-access memory (SDRAM) that operates at 1.35V, reducing power consumption by about 20% compared to standard DDR3 (1.5V). It is part of the DDR3 family, which uses double data rate signaling to transfer data on both edges of the clock, achieving high bandwidth. DDR3L is widely used in laptops, servers, and industrial applications where energy efficiency is critical. Key features include a 4Gbit density, x16 data bus width, 1.067 GHz maximum clock speed, and industrial temperature range (-40°C to +95°C). The device supports burst lengths of 8 and 4, on-die termination (ODT), and programmable CAS latency. It is RoHS compliant and lead-free, meeting environmental standards. Technically, the W634GU6RB09I uses a 96-ball VFBGA package with a 0.8mm ball pitch, enabling high-density mounting on PCBs. The memory core is based on advanced DRAM process technology, providing high reliability and performance. The device includes auto-refresh and self-refresh modes for low-power standby, and supports DLL (Delay-Locked Loop) for precise timing. Typical applications include embedded computing, networking routers, industrial automation, and consumer electronics such as set-top boxes and smart TVs. Its low voltage and high density make it ideal for designs requiring large memory capacity with minimal power draw. When designing with this component, ensure proper decoupling capacitors near the power pins and follow the layout guidelines in the datasheet to minimize signal integrity issues. The device requires a 1.35V supply and a separate VDDQ for I/O, which should be regulated accurately.
W634GU6RB09J - 4Gb DDR3L SDRAM x16 1066MHz | Winbond
The Winbond W634GU6RB09J is a 4Gbit DDR3L SDRAM organized as 256M x 16, operating at 1.35V with a data rate of 1066MHz (DDR3L-2133). It comes in a 96-ball VFBGA (7.5x13mm) package, offering a compact footprint for space-constrained designs. This memory IC is designed for high-bandwidth applications requiring low power consumption, making it ideal for mobile, embedded, and networking systems. DDR3L (Double Data Rate 3 Low Voltage) is a type of synchronous dynamic random-access memory (SDRAM) that operates at 1.35V, reducing power consumption by about 20% compared to standard 1.5V DDR3. It is part of the DDR3 family, which uses double data rate signaling to transfer data on both edges of the clock, achieving high throughput. DDR3L is backward-compatible with DDR3 and is widely used in laptops, servers, and industrial electronics where energy efficiency is critical. Key features include a 4Gbit density, x16 organization, 1.067 GHz clock speed, and a CAS latency of 20 ns. The device supports on-die termination (ODT), programmable CAS latency, and burst lengths of 8 and 4. It operates over a temperature range of 0°C to +95°C (case temperature) and is RoHS compliant. The 96-VFBGA package measures 7.5x13mm with a 0.8mm ball pitch, enabling high-density PCB layouts. Technically, the W634GU6RB09J uses a 30nm-class process technology, achieving low power and high speed. It features internal calibration for ZQ, write leveling, and read leveling to ensure signal integrity at high frequencies. The device supports auto-refresh and self-refresh modes, reducing standby power. Its low voltage operation and advanced power management make it suitable for battery-powered devices. Typical applications include mobile computing, networking equipment, industrial automation, and consumer electronics such as set-top boxes and smart TVs. The high density and low power make it ideal for systems requiring large memory capacity with minimal energy consumption. When designing with this component, ensure proper decoupling capacitors near the power pins and follow the layout guidelines in the datasheet to maintain signal integrity at 1066MHz. The device requires a 1.35V supply and a separate VDDQ, which should be regulated accurately.
W634GU6RB11I - 4Gb DDR3L SDRAM x16 933MHz | Winbond
The W634GU6RB11I is a 4Gbit DDR3L SDRAM memory IC from Winbond Electronics, organized as 256M x 16 bits. It operates at a clock frequency of 933 MHz (DDR3L-1866) with a CAS latency of 20 ns, and is supplied in a 96-ball VFBGA package measuring 7.5 x 13 mm. This device is designed for low-voltage operation at 1.35V, reducing power consumption by approximately 15% compared to standard 1.5V DDR3, making it ideal for power-sensitive applications. DDR3L SDRAM (Double Data Rate 3 Low Voltage) is a type of synchronous dynamic random-access memory that transfers data on both edges of the clock signal, effectively doubling the data rate. It operates at a lower voltage (1.35V) than standard DDR3 (1.5V), offering improved energy efficiency. DDR3L is part of the DDR SDRAM family, which includes DDR, DDR2, DDR3, and DDR4, and is widely used in computing, networking, and embedded systems where high bandwidth and low power are critical. Key features of the W634GU6RB11I include a parallel interface with a 16-bit data bus, support for industrial temperature range (-40°C to +95°C), and compatibility with JEDEC DDR3L standards. The device offers burst lengths of 8 and 4, on-die termination (ODT), and programmable CAS latency. Its low-voltage operation and high density make it suitable for applications requiring large memory capacity with minimal power draw. The W634GU6RB11I utilizes advanced DRAM process technology, achieving high-speed data transfer while maintaining low power consumption. The 96-ball VFBGA package provides excellent thermal and electrical performance, with a compact footprint suitable for space-constrained designs. The device supports auto-refresh and self-refresh modes, ensuring data integrity with minimal power consumption during idle periods. Typical applications include networking equipment (routers, switches), industrial automation, embedded computing, and consumer electronics such as set-top boxes and smart TVs. Its industrial temperature rating makes it suitable for harsh environments, while the low-voltage operation extends battery life in portable devices. When designing with this component, ensure proper decoupling capacitors are placed near the power pins to minimize noise. The VFBGA package requires careful PCB layout to route the fine-pitch balls, and the DDR3L interface should be terminated according to JEDEC guidelines to maintain signal integrity.
W634GU6RB11J - 4Gb DDR3L SDRAM x16 933MHz | Winbond
The Winbond W634GU6RB11J is a 4Gbit DDR3L SDRAM organized as 256M x 16, operating at a clock frequency of 933 MHz (DDR3L-1866) with a data rate of 1866 MT/s. It is housed in a 96-ball VFBGA package (7.5x13 mm) and operates from a 1.35V supply, making it suitable for low-power applications. The device supports parallel interface with a burst length of 8 and features a 20 ns CAS latency. DDR3L (Double Data Rate 3 Low Voltage) is a type of synchronous dynamic random-access memory (SDRAM) that operates at 1.35V, reducing power consumption by about 20% compared to standard DDR3 (1.5V). It is part of the DDR3 family, which uses double data rate signaling to transfer data on both edges of the clock, achieving high bandwidth. DDR3L is commonly used in mobile devices, embedded systems, and industrial applications where power efficiency is critical. Key features include auto self-refresh, auto precharge, data mask, write leveling, ZQ calibration, asynchronous reset, and dynamic on-chip termination (DTC). These features enhance signal integrity and simplify system design. The device supports industrial temperature range from -40°C to +95°C, making it suitable for harsh environments. It is RoHS compliant and halogen-free, aligning with environmental standards. Technically, the W634GU6RB11J uses a 96-ball VFBGA package with a 0.8mm ball pitch, providing excellent thermal and electrical performance. The memory array is organized in 8 banks, and the device supports programmable CAS latency (CL) and additive latency (AL) for flexible timing. The on-die termination (ODT) feature improves signal quality by matching impedance, reducing reflections on the data bus. Typical applications include networking equipment, industrial automation, medical devices, and embedded computing systems where high-density, low-power memory is required. The 4Gb density and x16 organization make it ideal for applications needing moderate memory capacity with a wide data bus. When designing with this device, ensure proper decoupling capacitors near the VDD and VDDQ pins to minimize power supply noise. Also, follow the JEDEC DDR3L layout guidelines for signal integrity, including controlled impedance traces and proper termination.
W634GU6RB12I - 4Gb DDR3L SDRAM x16 800MHz | Winbond
The W634GU6RB12I is a 4Gbit DDR3L SDRAM organized as 256M x 16, operating at 1.35V with a data rate of 800MHz (DDR3L-1600). It is housed in a 96-ball VFBGA (7.5x13mm) package and is designed for industrial temperature range (-40°C to +95°C). This memory IC is ideal for applications requiring high-density, low-power volatile storage. DDR3L (Double Data Rate 3 Low Voltage) is a type of synchronous dynamic random-access memory (SDRAM) that operates at 1.35V, reducing power consumption by about 20% compared to standard DDR3 (1.5V). It is part of the DDR3 family, which uses double data rate signaling to transfer data on both edges of the clock, achieving high bandwidth. DDR3L is commonly used in computing, networking, and embedded systems where power efficiency is critical. Key features include a parallel interface with 800MHz clock speed, 20ns row cycle time, and support for industrial temperature grades. The device is RoHS compliant and halogen-free, meeting environmental standards. The 96-ball VFBGA package offers a compact footprint suitable for space-constrained designs. The W634GU6RB12I utilizes advanced DRAM process technology, providing reliable performance with low power consumption. It supports standard DDR3L features such as on-die termination (ODT), programmable CAS latency, and burst lengths of 8. The industrial temperature grade ensures operation in harsh environments. Typical applications include industrial automation, networking equipment, embedded computing, and automotive infotainment systems. Its high density and low power make it suitable for memory-intensive tasks in these domains. When designing with this device, ensure proper decoupling and signal integrity practices are followed, as high-speed memory interfaces require careful PCB layout to minimize noise and reflections.
W634GU6RB12J - 4Gb DDR3L SDRAM 933MHz | Winbond
The W634GU6RB12J is a 4Gbit DDR3L SDRAM from Winbond Electronics, organized as 256M x 16 and operating at 1.35V. It features a parallel interface with a clock speed of 933 MHz (DDR3L-1866) and a CAS latency of 20 ns. The device is housed in a 96-ball VFBGA package (7.5x13 mm) and is designed for high-bandwidth memory applications. DDR3L SDRAM is a type of dynamic random-access memory that operates at a lower voltage (1.35V) compared to standard DDR3 (1.5V), reducing power consumption while maintaining high data rates. It is part of the DDR3L memory family, which is widely used in computing, networking, and industrial applications where power efficiency is critical. Key features include a 4Gbit density, x16 organization, 933 MHz clock speed, and support for the DDR3L-1866 specification. The device offers a burst length of 8 and supports on-die termination (ODT) for improved signal integrity. It operates over a temperature range of -40°C to +105°C (TCASE) for the 12J industrial plus grade, making it suitable for harsh environments. The W634GU6RB12J utilizes advanced DRAM process technology to achieve high speed and low power. It includes features such as programmable CAS latency, write leveling, and self-refresh modes to optimize performance and power consumption. The 96-ball VFBGA package provides excellent thermal and electrical performance. Typical applications include embedded systems, networking equipment, industrial automation, and automotive infotainment. The low voltage and high speed make it ideal for power-sensitive designs that require high memory bandwidth. When designing with this device, ensure proper decoupling and signal integrity practices are followed. The DDR3L interface requires careful PCB layout to minimize crosstalk and maintain signal quality at high speeds.
W9425G6JH-5 - 256Mbit DDR400 SDRAM, 16Mx16, 2.5V TSOP-II | Winbond
The Winbond W9425G6JH-5 is a 256 Mbit DDR SDRAM organized as 4M x 4 banks x 16 bits, housed in a 66-pin TSOP-II surface-mount package and rated for DDR400/CL3 operation at 2.5V. The -5 speed grade delivers a peak data bandwidth of up to 400 Mwords per second under the JEDEC DDR-I specification, making it suitable for legacy embedded graphics, networking line cards, set-top boxes, and industrial controllers that required double-data-rate throughput in the mid-2000s. The device is fabricated in a CMOS process and includes on-chip refresh, burst counter, and self-refresh support. A DDR SDRAM (Double Data Rate Synchronous Dynamic Random Access Memory) is a type of volatile memory that transfers data on both the rising and falling edges of the clock, effectively doubling the peak throughput of a single-data-rate SDRAM of the same bus frequency. DDR-I sits at the base of the DDR family hierarchy (DDR -> DDR SDRAM -> volatile memory -> DRAM -> semiconductor memory) and was standardized by JEDEC as the JESD79 specification family. Compared to its predecessor SDR SDRAM, DDR-I uses a 2n-prefetch architecture, SSTL-2 I/O, and requires a 2.5V supply for VDD plus a 2.5V supply for VDDQ. Key specifications of the W9425G6JH-5 include 4,194,304 words per bank across 4 banks, a 16-bit data bus width, a CAS Latency (CL) of 3 at DDR400, a 66-pin TSOP-II mechanical outline measuring 0.400 inch wide, and the -5I industrial temperature grade option that supports -40C to +85C. The chip operates from a single 2.5V VDD supply with a separate VDDQ rail terminated to VTT for the SSTL-2 interface. Internally, the device uses a 4-bank architecture with dual-bank operation and supports burst lengths of 2, 4, 8, and full page. The W9425G6JH-5 is constructed with a prefetch I/O scheme synchronized to the internal SDRAM clock, achieving DDR400 compliance when paired with a host controller that drives the SSTL-2 signaling at 200 MHz with 3n CBR. The 4-bank architecture allows interleaved operations across banks while one bank is being precharged, improving effective bandwidth in streaming workloads. Self-refresh mode permits low-power standby retention, making the device suitable for battery-backed or low-duty-cycle embedded systems. Typical applications for the W9425G6JH-5 include DDR1 main memory in industrial PCs, networking switches, digital video recorders, and printer controllers. The wide 16-bit bus simplifies interface to ASICs and low-cost processors without requiring multiple narrow-DRAM chips. Designers choose this Winbond part where Micron, Samsung, and Nanya equivalents are also qualified in 2018. When designing with the W9425G6JH-5, place VTT termination resistors within 1 inch of the DQ/DQS pins and follow JEDEC DDR-I routing guidelines. Decouple VDDQ with 0.1uF and 10uF capacitors near each pin and route DQS in matched-length pairs with the byte lane. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers an actionable single reference for sourcing and design-in of the W9425G6JH-5.
W948D6FBHX5I - 256Mb LPDDR SDRAM 200MHz | Winbond
The Winbond Electronics W948D6FBHX5I is a 256 Mbit Mobile Low-Power DDR (LPDDR / mobile DDR) SDRAM memory IC organized as 4M words x 4 banks x 16 bits, operating at up to 200 MHz with a 5 ns clock cycle, supplied in a 60-ball VFBGA (8x9 mm, 0.80 mm ball pitch) package. LPDDR SDRAM is a volatile DRAM variant optimized for battery-powered and thermally constrained systems. Unlike standard DDR DRAM, mobile LPDDR uses a 1.8 V core supply, deeper power-down modes, a temperature-compensated self-refresh (TCSR) feature, and partial-array self-refresh (PASR) to cut standby current. In the memory hierarchy it sits between SRAM and standard DDR SDRAM, forming the main-memory tier of embedded SoC platforms. Key features of the W948D6FBHX5I include the x16 parallel data interface, which reduces bus width and pin count versus x32 parts, a 200 MHz clock rate supporting LPDDR-200 throughput of 400 MB/s per pin pair, and the industrial temperature variant denoted by the I suffix in the ordering code. The VFBGA ball-grid package minimizes board area at 72 mm2 and improves signal integrity through short, controlled-impedance ball interconnects. Internally the device uses four independent banks with a burst length of 2, 4, or 8, allowing efficient random and sequential access. Power management modes include deep power-down, self-refresh, and power-down, with typical operating current in the tens of milliamp range and standby current in the microamp range when self-refresh is enabled. Typical applications include industrial HMI and gateways, portable medical instruments, telematics and tracking devices, and embedded Linux/RTOS systems where an application processor requires 32 MB of low-power main memory. When designing with this part, match the controller timing registers to the 5 ns cycle time and route the address/control bus as a matched-length fly-by or point-to-point group within the 1.8 V SSTL-18-style I/O regime; series termination is usually unnecessary at this speed for short traces. This page consolidates distributor availability, pricing tiers, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet.
W949D2DBJX5I - 512Mb LPDDR SDRAM 200MHz x32 | Winbond
The Winbond Electronics W949D2DBJX5I is a 512Mbit Low Power DDR (LPDDR / Mobile DDR) SDRAM memory IC with a x32 data interface, 200 MHz clock rate (5 ns clock cycle), fabricated on a 46nm DRAM process and housed in a 90-ball VFBGA (8x13 mm) package, qualified for the industrial temperature range. An LPDDR SDRAM is a mobile-optimized variant of double-data-rate synchronous DRAM. Like all DRAM, it stores each bit as charge on a capacitor that must be periodically refreshed, but LPDDR devices reduce core and I/O operating voltage and add low-power modes such as Deep Power Down and Self Refresh so that battery-powered systems can keep volatile memory alive with minimal energy. In the memory hierarchy, the W949D2DBJX5I sits as main system memory, positioned between embedded SRAM caches and non-volatile flash storage. Key features include 512Mbit total density organized for a x32-wide parallel bus, a 200 MHz maximum clock frequency delivering effective double-data-rate transfers on both clock edges, and the space-saving 90-VFBGA 8x13 mm ball grid array that minimizes board area and improves signal integrity for high-speed memory routing. The I temperature suffix designates industrial-grade operating temperature support, and the 46nm process keeps core current low. Technically, the device uses double data rate signaling on the DQ pins, source-synchronous data strobes (DQS) for capture, and programmable mode registers for CAS latency, burst length and burst type configuration per the LPDDR (Mobile DDR) SDRAM standard. Bank and row/column addressing follow the standard LPDDR command set with ACTIVATE, READ, WRITE, PRECHARGE, REFRESH and mode register set commands. Typical applications include portable and industrial embedded systems: main memory for ARM-based application processors, networking and communication modules, telematics and data-loggers, and human-machine interface boards where 64 MByte of low-power DRAM is sufficient. Design consideration: LPDDR shares command/address lines among devices, so careful length-matched routing and proper termination of the 1.8 V-class signaling environment are essential; verify the controller supports the selected CAS latency and burst configuration before layout. This page synthesizes distributor pricing, drop-in family alternatives, pin-level guidance and practical design notes not consolidated in the manufacturer datasheet.
W949D2DBJX5I-TR - 512Mb LPDDR SDRAM 200MHz x32 | Winbond
The Winbond Electronics W949D2DBJX5I-TR is a 512Mbit Mobile LPDDR SDRAM memory IC with a 32-bit parallel data interface, 200 MHz clock frequency, 5 ns access time, and a 90-ball VFBGA (8x13 mm) package, qualified for the -40C to +85C industrial temperature range. Mobile LPDDR SDRAM is a low-power variant of Double Data Rate synchronous DRAM optimized for battery-powered and thermally constrained systems. Within the memory hierarchy, SDRAM sits under the volatile RAM family, distinguished from asynchronous DRAM by a clocked interface and from standard DDR by reduced core voltage, lower I/O swing, and power-saving features such as deep power-down and temperature-compensated self-refresh. Key features include a 1.7 V to 1.95 V supply range (nominal 1.8 V), x32 organization at 512 Mbit density, a 200 MHz clock rate with 5 ns access time, and the compact 90-VFBGA footprint that minimizes PCB area in portable designs. The industrial temperature grade (-40C to +85C) extends usability from consumer handhelds into industrial and networking equipment. Fabricated on a 46 nm DRAM process, the device achieves a favorable balance of density, power and cost. The double-data-rate interface transfers data on both clock edges, doubling effective bandwidth relative to SDR SDRAM at the same clock. Standard LPDDR command set support (CKE-based power-down, self-refresh, mode register programming) allows straightforward controller integration with common SoCs and application processors. Typical applications include embedded industrial controllers, networking and communication equipment, telematics and navigation boxes, portable instrumentation, and battery-buffered data loggers where 64 MByte of low-power program/data memory is sufficient. Designers should observe LPDDR signal integrity requirements: length-match the differential clock to address/command traces, terminate per the datasheet guidelines, and provide a clean 1.8 V core rail with adequate decoupling at each VDD/VDDQ pin pair of the BGA array. This page synthesizes distributor pricing, family alternatives, and practical LPDDR layout guidance not consolidated in the manufacturer datasheet alone. Specifications above are drawn from verified distributor listings (DigiKey, Mouser, JLCPCB) as of 2026-09-14.
W971GG6JB-25I - 1Gb DDR2 SDRAM, 800MHz, Industrial | Winbond
The Winbond W971GG6JB-25I is a 1 Gbit DDR2 SDRAM organized as 8M words x 8 banks x 16 bits, housed in an 84-ball WBGA package (8 x 12.5 mm). The -25I speed grade supports a clock frequency of 400 MHz (DDR2-800) with data rates up to 800 Mb/s/pin, while the underlying die family extends to DDR2-1066 for higher-grade speed bins. 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.
W971GG6NB-6 - 1Gb DDR2-667 SDRAM x16 84-TFBGA | Winbond
The Winbond W971GG6NB-6 is a 1Gbit DDR2 SDRAM organized as 8M x 8 banks x 16 bits per chip, operating at a 667 Mbps data rate (DDR2-667) in a compact 84-ball TFBGA (8x12.5 mm) package. It is the -6 speed-grade variant of the W971GG6NB family and is sorted into multiple grade parts including -18, 18I, 18J, -25, 25I, 25J and -3, where the -18/18I/18J grades are compliant to the DDR2-1066 (6-6-6) specification and the -25/25I/25J grades target the DDR2-800 specification. A DDR2 SDRAM is a synchronous dynamic random-access memory that transfers data on both clock edges (double data rate) while operating from a 1.8V SSTL_18 interface. It belongs to the broader DRAM family (SDRAM -> DDR -> DDR2) and is positioned between DDR and DDR3 in the JEDEC memory hierarchy, offering higher bandwidth than DDR while consuming lower power than DDR3 thanks to the 1.8V supply rail. Key features of the W971GG6NB-6 include 8 internal banks for concurrent operations, on-chip termination (Dynamic ODT), auto precharge, data mask (DM) function for write masking, and programmable CAS latency. The chip is supplied from a single 1.8V power rail with a separate 1.8V VDDQ for the DQ bus and supports self-refresh and power-down modes for low standby power. The 84-ball TFBGA package provides a small footprint suitable for high-density designs. The W971GG6NB-6 architecture uses a double data rate interface that prefetches 4n-bit per I/O per clock cycle, doubling effective throughput without raising the core clock. Programmable impedance matching, calibrated on-die termination, and write leveling simplify board-level signal integrity at the 667 Mbps operating point, making the part straightforward to integrate on standard JEDEC-compliant DDR2 controllers. Typical applications include set-top boxes, networking equipment, LCD TVs, industrial PCs, printers, and embedded systems that need a cost-effective 1Gbit x16 DDR2 memory. The 84-ball TFBGA footprint and JEDEC-standard command set also allow it to be used as a boot RAM or working memory on SoCs that integrate DDR2 controllers. When designing with this device, follow JEDEC DDR2 PCB layout rules: maintain 50 ohm single-ended impedance on the DQ/strobe traces, route DQS and CLK with controlled length matching, and provide a clean 1.8V supply with bulk decoupling near each chip. Note that the -6 grade targets DDR2-667 timing; if your design needs higher bandwidth, consider the -18 or -25 grade parts in the same family. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single reference for evaluating W971GG6NB-6 in cost-sensitive DDR2 designs.