| Part Number | W25M161AVEIT | W25M121AVEIT | 
|---|---|---|
| Manufacturer | Winbond Electronics | Winbond Electronics | 
| Category | Memory | Memory | 
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| Product Status | Not For New Designs | Not For New Designs | 
| Memory Type | Non-Volatile | Non-Volatile | 
| Memory Format | Flash | Flash | 
| Technology | FLASH - NAND, FLASH - NOR | FLASH - NAND, FLASH - NOR | 
| Memory Size | 16Mb (FLASH-NOR), 1Gb (FLASH-NAND) (2M x 8 (FLASH-NOR), 128M x 8 (FLASH-NAND)) | 128Mb (FLASH-NOR), 1Gb (FLASH-NAND) (16M x 8 (FLASH-NOR), 128M x 8 (FLASH-NAND)) | 
| Memory Interface | SPI - Quad I/O | SPI - Quad I/O | 
| Clock Frequency | 133 MHz | 133 MHz | 
| Write Cycle Time - Word, Page | 3ms | 3ms | 
| Access Time | 6 ns | 6 ns | 
| Voltage - Supply | 2.7V ~ 3.6V | 2.7V ~ 3.6V | 
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 8-WDFN Exposed Pad | 8-WDFN Exposed Pad | 
| Supplier Device Package | 8-WSON (8x6) | 8-WSON (8x6) |