The BU97520AKV-M is 1/4 or 1/3-Duty general-purpose LCD driver that can be used for frequency display in electronic tuners under the control of a microcontroller. The BU97520AKV-M can drive up to 276 LCD Segments directly. The BU97520AKV-M can also control up to 6 general-purpose output ports. These products also incorporate a key scan circuit that accepts input from up to 30 keys to reduce printed circuit board wiring.· AEC-Q100 Qualified· Key input function for up to 30 keys. (A key scan is performed only when a key is pressed.)· Either 1/4 or 1/3-Duty can be selected with the serial control data.1/4-Duty drive: Up to 276 segments1/3-Duty drive: Up to 207 segments· Serial data control of frame frequency for common and segment output waveforms.· Serial data control of switching between the segment output port, PWM output port and general-purpose output port functions.(Max 6 port)· Built-in OSC circuit· The INHb pin can force the display to the off state.· Integrated Power-on Reset circuit· No external component required· Low power consumption design· Supports Line and Frame Inversion