SpansionFLASH MEMORY, 4MBIT, 90NS, 32-DIP; Memory Type:Flash - NOR; Memory Size:4Mbit; Flash Memory Configuration:512K x 8bit; Supply Voltage Min:4.5V; Supply Voltage Max:5.5V; Memory Case Style:DIP; No. of Pins:32; Clock Frequency:-; MSL:- ;RoHS Compliant: No