HT9302A

HT9302 Series 1-Memory/2-Memory Tone/Pulse Dialer Features · Universal specification · Operating voltage: 2.0V~5.5V · Low standby current · Low memory retention current: 0.1mA (typ.) · Tone/pulse switchable · Interface with LCD driver · 32 digits for redialing · 32 digits for SA memory dialing · One-key redialing · Pause and P®T key for PBX · 4´4 keyboard matrix · 3.58MHz crystal or ceramic resonator Patent Number: 64097, 86474, 64529, 113235 (R.O.C.) 5424740 (U.S.A.) · Hand-free control · Hold-line control · Pause, P®T can be saved for redialing · Lock function · Resistor options - M/B ratio - Flash function and flash time - Pause and P®T duration - Pulse number · HT9302A: 18-pin DIP package HT9302B: 22-pin SKDIP package HT9302C: 20-pin DIP package HT9302D: 24-pin SKDIP package HT9302G: 16-pin DIP package General Description The HT9302 series tone/pulse dialers are CMOS LSIs for telecommunication systems. They are designed to meet various dialing specifications through resistor option matrix. The HT9302 series provide the pin-selected lock function, Hold-line, Hand-free and LCD dialing number display interface, all of which are suitable for feature phone applications. HT9302G is simpler than HT9302X version. It provides only a redialing memory for simple low-cost system applications. Selection Table Function Part No. HT9302x HT9302A HT9302B HT9302C HT9302D HT9302G HT9302G ¾ ¾ Ö Ö Ö Ö ¾ Ö ¾ Ö Lock Function (Pin Selection) Hold Line Hand Free (Normal version) ¾ Ö ¾ Ö (Simp...