描述 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.
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特性 Features

?Universal specification
?Operating voltage: 2.0V~5.5V
?Low standby current
?Low memory retention current: 0.1μA (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
?4x4 keyboard matrix
?3.58MHz crystal or ceramic resonator
?Hand-free control
?Hold-line control
?Pause, P->T can be saved for redialing
?Lock function
?Keytone 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/NSOP package