LC75852E, LC75852W 1/2-Duty LCD Driver with Key Input Function Overview The LC75852E and LC75852W are 1/2 duty dynamic LCD display drivers. www.onsemi.com In addition to being able to directly drive LCD panels with up to 90 segments, they can also control up to four general-purpose output ports. These products also include a key scan circuit which allows them to accept input from keypads with up to 30 keys. This allows end product front panel wiring to be simplified. Features Up to 30 key inputs (Key scan is only performed when a key is pressed.) 1/2 duty 1/2 bias (up to 90 segments) Sleep mode and the all segments off function can be controlled from serial PQFP64 14x14 / QIP64E data. LC75852E Segment output port/general-purpose output port usage can be controlled from serial data. Serial data I/O supports CCB* format communication with the system controller. High generality since display data is displayed directly without decoder intervention Reset pin that can establish the initial state. SPQFP64 10x10 / SQFP64 LC75852W Specifications Absolute Maximum Ratings at Ta = 25C, V = 0V SS Parameter Symbol Conditions Ratings Unit Maximum supply voltage V max V 0.3 to +7.0 V DD DD RES Input voltage V OSC, CE, CL, DI, , KI1 to KI5 0.3 to V+0.3 V IN DD Output voltage V OSC, DO, S1 to S45, COM1, COM2, KS1 to KS6, P1 to P4 0.3 to V+0.3 V OUT DD I 1 S1 to S45 100 A OUT I 2 COM1, COM2, KS1 to KS6 Output current 1 OUT mA I 3 P1 to P4 5 OUT Allowable power dissipation Pd max Ta = 85C 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. * 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 19 of this data sheet. Semiconductor Components Industries, LLC, 2017 1 Publication Order Number : July 2017 - Rev. 1 LC75852E W/D LC75852E, LC75852W Allowable Operating Ranges at Ta = 40 to +85C, V = 0 V SS Parameter Symbol Conditions min typ max Unit Supply voltage V V 4.5 6.0 V DD DD V 1 CE, CL, DI, RES 0.8 V V V IH DD DD Input high-level voltage V 2 KI1 to KI5 0.6 V V V IH DD DD Input low-level voltage V CE, CL, DI, RES, KI1 to KI5 0 0.2 V V IL DD Recommended external R OSC 62 k OSC resistance Recommended external C OSC 680 pF OSC capacitance Guaranteed oscillator range f OSC 25 50 100 kHz OSC Data setup time t CL, DI: Figure 1 160 ns ds Data hold time t CL, DI: Figure 1 160 ns dh CE wait time t CE, CL: Figure 1 160 ns cp CE setup time t CE, CL: Figure 1 160 ns cs CE hold time t CE, CL: Figure 1 160 ns ch High-level clock pulse width t CL: Figure 1 160 ns H Low-level clock pulse width t CL: Figure 1 160 ns L Rise time t CE, CL, DI: Figure 1 160 ns r Fall time t CE, CL, DI: Figure 1 160 ns f DO output delay time t DO, R = 4.7 k, C = 10 pF*: Figure 1 1.5 s dc PU L DO rise time t DO, R = 4.7 k, C = 10 pF*: Figure 1 1.5 s dr PU L RES switching time t2 Figure 2 10 s Note: * Since DO is an open-drain output, these values differ depending on the pull-up resistor R and the load capacitance C . PU L 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. Electrical Characteristics in the Allowable Operating Ranges Parameter Symbol Conditions min typ max Unit Hysteresis V CE, CL, DI, RES, KI1 to KI5 0.1 V V H DD Input high-level current I CE, CL, DI, RES: V = 6.0 V 5.0 A IH I Input low-level current I CE, CL, DI, RES: V = 0 V 5.0 A IL I Input floating voltage V KI1 to KI5 0.05 V V IF DD Pull-down resistance R KI1 to KI5: V = 5.0 V 50 100 250 k PD DD Output off leakage current I DO: V = 6.0 V 6.0 A OFFH O V 1 KS1 to KS6: I = 1 mA V 1.0 V OH O DD V 2 P1 to P4: I = 1 mA V 1.0 V OH O DD Output high-level voltage V 3 S1 to S45: I = 10 AV 1.0 V OH O DD V 4 COM1, COM2: I = 100 AV 0.6 V OH O DD V 1 KS1 to KS6: I = 50 A 0.4 1.0 3.0 V OL O V 2 P1 to P4: I = 1 mA 1.0 V OL O Output low-level voltage V 3 S1 to S45: I = 10 A1.0V OL O V 4 COM1, COM2: I = 100 A0.6V OL O V 5 DO: I = 1 mA 0.1 0.5 V OL O V 1 COM1, COM2: V = 6.0 V, I =100 A 2.4 3.0 3.6 V MID DD O Output middle-level voltage V 2 COM1, COM2: V = 4.5 V, I =100 A 1.65 2.25 2.85 V MID DD O I 1 Sleep mode, Ta = 25C 5 A DD Current drain I2V = 6.0 V, output open, Ta = 25C, f = 50 kHz 1.4 2.5 mA DD DD OSC Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. www.onsemi.com 2