| Part Number | W971GG8NB25I | W971GG8JB25I | 
|---|---|---|
| Manufacturer | Winbond Electronics | Winbond Electronics | 
| Category | Memory | Memory | 
|   |   | |
| Product Status | Active | Obsolete | 
| Memory Type | Volatile | Volatile | 
| Memory Format | DRAM | DRAM | 
| Technology | SDRAM - DDR2 | SDRAM - DDR2 | 
| Memory Size | 1Gb (128M x 8) | 1Gb (128M x 8) | 
| Memory Interface | SSTL_18 | Parallel | 
| Clock Frequency | 400 MHz | 200 MHz | 
| Write Cycle Time - Word, Page | 15ns | 15ns | 
| Access Time | 400 ps | 400 ps | 
| Voltage - Supply | 1.7V ~ 1.9V | 1.7V ~ 1.9V | 
| Operating Temperature | -40°C ~ 95°C (TC) | -40°C ~ 95°C (TC) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 60-VFBGA | 60-TFBGA | 
| Supplier Device Package | 60-VFBGA (8x9.5) | 60-WBGA (8x12.5) |