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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