Winbond Electronics W631 Memory Series

4 variants · Winbond ElectronicsAll Memory (DRAM / SRAM / Flash / EEPROM) →

About the Winbond Electronics W631 Memory Series

The Winbond Electronics W631 Memory Series series groups 4 related part numbers, each listed with full specifications, a datasheet where available, and an RFQ option. Every variant in the range shares a common access time of 20 ns, memory format of DRAM and memory size of 1Gbit. Variants differ by case, frequency and memory interface, so you can match the exact case your application requires using the selection guide below. All listed Winbond Electronics W631 Memory Series part numbers are active and orderable.

Select a variant by

Case: 78-VFBGA · 96-VFBGA
Frequency: 800 MHz · 933 MHz
Memory interface: Parallel · SSTL_15
Memory organization: 64M x 16 · 128M x 8
Package: Tape & Reel (TR); Cut Tape (CT) · Tray
Technology: SDRAM - DDR3 · SDRAM - DDR3L
Voltage: 1.283V ~ 1.45V, 1.425V ~ 1.575V · 1.425V ~ 1.575V

Shared specifications

Access time: 20 ns
Memory format: DRAM
Memory size: 1Gbit
Memory type: Volatile
Mounting: Surface Mount
Operating temperature: -40°C ~ 95°C (TC)
Write cycle time - word, page: 15ns

Variant comparison

Parameter	W631GG6NB11I TR	W631GG8NB12I	W631GU8NB12I	W631GU8NB12I TR
Case	96-VFBGA	78-VFBGA	78-VFBGA	78-VFBGA
Frequency	933 MHz	800 MHz	800 MHz	800 MHz
Memory interface	SSTL_15	SSTL_15	Parallel	Parallel
Memory organization	64M x 16	128M x 8	128M x 8	128M x 8
Package	Tape & Reel (TR); Cut Tape (CT)	Tray	Tray	Tape & Reel (TR); Cut Tape (CT)
Technology	SDRAM - DDR3	SDRAM - DDR3	SDRAM - DDR3L	SDRAM - DDR3L
Voltage	1.425V ~ 1.575V	1.425V ~ 1.575V	1.283V ~ 1.45V, 1.425V ~ 1.575V	1.283V ~ 1.45V, 1.425V ~ 1.575V

Request a quote on any Winbond Electronics W631 Memory Series part number and we confirm price, availability and lead time per line — including end-of-life and allocation-constrained variants.