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 ofwhich are suitable for feature phone applications. HT9302G is simpler than HT9302X version. Itprovides only a redialing memory for simple low-cost system applications.

•Universal specification

•Operating voltage: 2.0V~5.5V

•Low standby current

•Low memory retention current: 0.1A (typ.)

•Tone/pulse switchable

•Interface with LCD driver

•32 digits for redialing

•32 digits for SA memory dialing

•One-key redialing

•Pause and PT key for PBX

•44 keyboard matrix

•3.58MHz crystal or ceramic resonator