LC75838W 1/8 to 1/10-Duty General-Purpose LCD Driver Overview www.onsemi.com The LC75838W is 1/8 to 1/10 duty general-purpose LCD display driver used for character and graphics display. This product operates under the control of a microcontroller and can directly drive an LCD with up to 380 segments. It can also control up to 3 general-purpose output ports. Features 1/8duty1/4bias, 1/9duty1/4bias, and 1/10duty1/4bias drive schemes can be controlled from serial data. 1/8duty1/4bias: up to 320 segments 1/9duty1/4bias: up to 351 segments SPQFP64 10x10 / SQFP64 1/10duty1/4bias: up to 380 segments Serial data input supports CCB* format communication with the system controller. Serial data control of the power-saving mode based backup function and all the segments forced off function. Direct display of display data without the use of a decoder provides high generality. Built-in display contrast adjustment circuit. Up to 3 general-purpose output ports are included. Independent LCD driver block power supply V . LCD The INH pin is provided. This pin turns off the display and forces the general-purpose output ports to the low level. RC oscillator circuit * Computer Control Bus (CCB) is an ON Semiconductors original bus format and the bus addresses are controlled by ON Semiconductor. ORDERING INFORMATION See detailed ordering and shipping information on page 36 of this data sheet. Semiconductor Components Industries, LLC, 2017 1 Publication Order Number : July 2017 - Rev. 1 LC75838W/D LC75838W Specifications Absolute Maximum Ratings at Ta = 25 C, V = 0 V SS Parameter Symbol Conditions Ratings Unit Maximum supply voltage V max V 0.3 to +7.0 DD DD V V max V 0.3 to +12.0 LCD LCD Input voltage V 1 CE, CL, DI, INH 0.3 to +7.0 IN V2 OSC 0.3 to V +0.3 V IN DD V3 V 1, V 2, V 3, V 4 0.3 to V +0.3 IN LCD LCD LCD LCD LCD Output voltage V 1 OSC, P1 to P3 0.3 to V +0.3 OUT DD V V 2 V 0, S1 to S40, COM1 to COM10 0.3 to V +0.3 OUT LCD LCD Output current I 1 S1 to S40 300 A OUT I 2 COM1 to COM10 3 OUT mA I 3 P1 to P3 5 OUT Allowable power dissipation Pd max Ta = 85 C 200 mW Operating temperature Topr 40 to +85 C Storage temperature Tstg 55 to +125 C Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. Allowable Operating Ranges at Ta = 40 to +85C, V = 0 V SS Ratings Parameter Symbol Conditions unit min typ max Supply voltage V V 2.7 6.0 DD DD V V , When the display contrast LCD LCD 7.0 11.0 V adjustment circuit is used V V , When the display contrast LCD LCD 4.5 11.0 adjustment circuit is not used Output voltage V 0 V0 V 4 LCD LCD LCD V V LCD +4.5 Input voltage V 1 V 1 3/4(V 0 LCD LCD LCD V 0 LCD V 4) LCD V 2 V 2 2/4(V 0 LCD LCD LCD V 0 LCD V 4) V LCD V 3 V 3 1/4(V 0 LCD LCD LCD V 0 LCD V 4) LCD V 4 V 4 0 1.5 LCD LCD Input high level voltage V CE, CL, DI, INH 0.8V 6.0 V IH DD Input low level voltage V CE, CL, DI, INH 0 0.2V V IL DD Recommended external R OSC OSC 43 k resistance Recommended external C OSC OSC 680 pF capacitance Guaranteed oscillation range f OSC 25 50 100 kHz OSC Data setup time tds CL, DI Figure 2 160 ns Data hold time tdh CL, DI Figure 2 160 ns CE wait time tcp CE, CL Figure 2 160 ns CE setup time tcs CE, CL Figure 2 160 ns CE hold time tch CE, CL Figure 2 160 ns High level clock pulse width t H CL Figure 2 160 ns Low level clock pulse width t L CL Figure 2 160 ns INH switching time tc INH, CE 10 s Figure 3 , Figure 4 , Figure 5 Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may affect device reliability. www.onsemi.com 2