| Part Number | RC28F256P30T85A | RC28F256P30B85A | 
|---|---|---|
| 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 | 52 MHz | 52 MHz | 
| Write Cycle Time - Word, Page | 85ns | 85ns | 
| Access Time | 85 ns | 85 ns | 
| Voltage - Supply | 1.7V ~ 2V | 1.7V ~ 2V | 
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 64-TBGA | 64-TBGA | 
| Supplier Device Package | 64-EasyBGA (10x13) | 64-EasyBGA (10x13) |