The M29F080D90N1 from STMicroelectronics is a NOR flash memory Integrated Circuit with 8 Mbit parallel storage and 90 ns access time, in a 40-TSOP package.
The M29F080D70N6E from Micron Technology Inc. is a NOR flash memory Integrated Circuit with 8Mbit parallel interface and 70 ns timing, in a 40-TSOP package.