TC9314F2003-07-03344. Example of Timing Chart for LCD Driver Output Data and Loading Key DataThe following chart shows the output waveform timing and key return data loading timing when thecommon and segment outputs are allocated as shown.The voltages output in the LCD driver waveform are VLCD, GND, and an intermediate voltage halfwaybetween the two. Pins S23~S30 output the key return signals at the timing for switching between theselevels. During key return data loading, the segment outputs are at the VLCD level for 80 μs.Note 36: At CKSTP instruction execution or at a system reset, the common and segment pins go to the lowlevel.

Toshiba TC9314F Manual

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