| Part Number | JS28F256P33TFA | JS28F256P33BFA | 
|---|---|---|
| Manufacturer | Micron Technology Inc. | Micron Technology Inc. | 
| Category | Memory | Memory | 
|   |   | |
| Product Status | Obsolete | Obsolete | 
| Memory Type | Non-Volatile | Non-Volatile | 
| Memory Format | Flash | Flash | 
| Technology | FLASH - NOR | FLASH - NOR | 
| Memory Size | 256Mb (16M x 16) | 256Mb (16M x 16) | 
| Memory Interface | Parallel | Parallel | 
| Clock Frequency | 40 MHz | 40 MHz | 
| Write Cycle Time - Word, Page | 105ns | 105ns | 
| Access Time | 105 ns | 105 ns | 
| Voltage - Supply | 2.3V ~ 3.6V | 2.3V ~ 3.6V | 
| Operating Temperature | -40°C ~ 85°C (TC) | -40°C ~ 85°C (TC) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 56-TFSOP (0.724", 18.40mm Width) | 56-TFSOP (0.724", 18.40mm Width) | 
| Supplier Device Package | 56-TSOP | 56-TSOP |