DESCRIPTION
The SC9302 series tone/pulse dialers are CMOS LSIs for the telecommunication system. They are designed to meet various dialing specifications through resistor options matrix.
The SC9302 series tone/pulse dialers are offered in four different versions. They are SC9302X normal version, SC9302/F/G/H simple version, SC9302XT key-tone version and SC9302XLT key-tone/lock functions version. The SC9302X normal version provides the pin selected lock function; the SC9302XT version provides the key-tone function; the SC9302XLT version provides both the key-tone function and key board-operated IDD lock function. All of the above three versions also supply the following functions: Hold-line, Hand-free and LCD dialing number display interface, all of which are suitable for feature phone applications. However, the SC9302F/G/H version is simpler than the other three versions. It provides only a redialing memory for a simple low-cost system application.

FEATURES
* Universal specification
* Operating voltage: 2.0V~5.5V
* Low stand-by current
* Low memory retention current:0.1µA(Typ.)
* Tone/pulse switchable
* Interface with LCD driver
* 32 digits for redialing
* 32 digits for the 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
* Key tone function
* Resistor options:
   - M/B ratio
   - Flash function and flash time
   - Pause and P→T duration
   - Pulse number
   - Keyboard operated IDD lock function