I. The function and application of egsm1 for flash ic chips is dedicated to cell phone call displays, using the coms process, and when a cell phone (800 mhz, 900 mhz, 1800 mhz) calls or an antenna from a cell phone is signaled, the ic output control signal makes the 2led transient. When the circuit first comes up, led follows the flash and is on standby, and when the call comes in or calls, led blinks at a frequency of 4hz, which is determined by antennas. Ii, electrical performance (vdd = 3. 0v, gnd = 0, ta = 25°c) characters symtimpicunitremarks works at vddd 2. 035v static current isb 5 ma no load driver iol 14mavd = 3v (red led) storage temperature of tg-40 125 °c (1)(15% working temperature temp02560°c, c-st