IC, MEMORY, FLASH, 4M, 5V, 48TSOP; Memory Type:Boot Sector Flash; Memory Size:4MB; Memory Configuration:512K x 8, 256K x 16; Supply Voltage Range:4.5V to 5.5V; Memory Case Style:TSOP; No. of Pins:48; Operating Temperature Range:-40°C to +85°C; Access Time:70ns; Interface:Parallel; Memory Configuration:512K x 8b / 256K x 16b; Memory Type:Flash