LC75847T Datasheet | onsemi

Overview The LC75847T is 1/3 duty and 1/4 duty general-purpose LCD driver that can be used for frequency display in electronic tuners under the control of a microcontroller. The LC75847T can drive an LCD with up to 420 segments directly. The LC75847T can also control up to 8 general-purpose output ports. Features - Switching between 1/3 duty and 1/4 duty drive techniques under serial data control. TQFP120 14x14 - Switching between 1/2 bias and 1/3 bias drive techniques under serial data control. - Up to 318 segments for 1/3 duty drive and 420 segments for 1/4 duty drive can be displayed. - Serial data input supports CCB format munication with the system controller. - Serial data control of the power-saving mode based backup function and all the segments forced off function. - Serial data control of switching between the segment output port and the general-purpose output port functions. - Serial data control of frame frequency for mon and segment output waveforms. - High generality, since display data is displayed directly without decoder intervention. - Built-in display contrast adjustment circuit - Independent VLCD for the LCD driver block - The INH pin can force the display to the off state. - RC oscillator circuit Specifications Absolute Maximum Ratings at Ta = 25C, VSS = 0V Parameter Symbol Conditions Maximum supply voltage Input voltage Output voltage Output current Allowable power dissipation VDD max VLCD max VIN1 VIN2 VIN3 VOUT1 VOUT2 IOUT1 IOUT2 IOUT3 Pd max VDD VLCD CE, CL, DI, INH OSC VLCD1, VLCD2 OSC VLCD0, S1 to S106, 1 to 4, P1 to P8 S1 to S106 1 to 4 P1 to P8 Ta = 85°C Operating temperature Topr Storage temperature Tstg Ratings - 0.3 to +7.0 - 0.3 to +7.0 - 0.3 to +7.0 - 0.3 to VDD +0.3 - 0.3 to VLCD +0.3 - 0.3 to VDD +0.3 - 0.3 to VLCD +0.3 300 3 5 - 40 to +85 - 55 to +125 unit...