Ordering number : EN5597 CMOS LSI LC75834E, 75834W, 75834JE 1/4 Duty General-Purpose LCD Drivers Overview Package Dimensions The LC75834E, LC75834W, and LC75834JE are 1/4-duty general-purpose LCD drivers that can be used for frequency display in electronic tuners under the control of a microcontroller. The LC75834E and LC75834W can drive an LCD with up to 136 segments directly, the LC75834JE can drive an LCD with up to 120 segments directly. The LC75834E and LC75834W and LC75834JE can also control up to 8 general-purpose output ports. Since the LC75834E, LC75834W, and LC75834JE use separate power supply systems for the LCD drive block and the logic block, the LCD driver block power-supply voltage can be set to any voltage in the range 2.7 to 6.0 volts, regardless of the logic block power-supply voltage. unit: mm 3156-QFP48E [LC75834E] SANYO: QFP48E Features • Supports both 1/4 duty 1/2 bias and 1/4 duty 1/3 bias LCD drive under serial data control. LC75834E, LC75834W: up to 136 segments LC75834JE: up to 120 segments (without the S9, S18, S27, S34 segment output pins from the LC75834E, LC75834W) • 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 • Serial data control of switching between the segment output port and the general-purpose output port functions • High generality, since display data is displayed directly without decoder intervention. • Independent VLCD for the LCD driver block (VLCD can be set to any voltage in the range 2.7 to 6.0 volts, regardless of the logic block power-supply voltage.) • The INH pin can force the display to the off state. • RC oscillator circuit unit: mm 3163A-SQFP48 [LC75834W] SANYO: SQFP48 unit: mm 3148-QFP44MA [LC75834JE] • CCB is a trademark of SANYO ELECTRIC CO., LTD. • CCB is a SANYO’s original bus format and all the bus addresses are controlled by SANYO. SANYO: QIP44MA SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 63097HA (OT) No. 5597-1/18 LC75834E, 75834W, 75834JE Specifications Absolute Maximum Ratings at Ta = 25°C, VSS = 0 V Parameter Symbol Maximum supply voltage Conditions Ratings Unit VDD max VDD –0.3 to +7.0 V VLCD max VLCD –0.3 to +7.0 V Input voltage Output voltage Output current Allowable power dissipation VIN 1 CE, CL, DI, INH VIN 2 OSC VIN 3 VOUT 1 –0.3 to +7.0 V –0.3 to VDD + 0.3 V VLCD 1, VLCD 2 OSC –0.3 to VLCD + 0.3 V –0.3 to VDD + 0.3 V VOUT 2 S1 to S34, COM1 to COM4, P1 to P8 –0.3 to VLCD + 0.3 V IOUT 1 S1 to S34 300 µA IOUT 2 COM1 to COM4 3 mA IOUT 3 P1 to P8 5 mA Pd max Ta = 85°C 150 mW Operating temperature Topr –40 to +85 °C Storage temperature Tstg –55 to +125 °C Note: The LC75834JE do not have the S9, S18, S27 S34 output pins. Allowable Operating Ranges at Ta = –40 to +85°C, VSS = 0 V Ratings Parameter Supply voltage Input voltage Input high-level voltage Input low-level voltage Symbol Conditions min typ max Unit VDD VDD 2.7 6.0 V VLCD VLCD 2.7 6.0 V VLCD1 VLCD1 2/3 VLCD VLCD V VLCD2 VLCD2 1/3 VLCD VLCD V 6.0 V VIH CE, CL, DI, INH 0.8 VDD VIL CE, CL, DI, INH 0 Recommended external resistance ROSC OSC Recommended external capacitance COSC OSC Guaranteed oscillation range fOSC OSC 0.2 VDD 43 680 25 50 V kΩ pF 100 kHz 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 tøH CL: Figure 2 160 ns Low-level clock pulse width tøL CL: Figure 2 160 Rise time tr CE, CL, DI: Figure 2 Fall time tf CE, CL, DI: Figure 2 INH switching time tc INH, CE: Figure 3 ns 160 160 10 ns ns µs No. 5597-2/18 LC75834E, 75834W, 75834JE Electrical Characteristics for the Allowable Operating Ranges Ratings Parameter Symbol Conditions Hysteresis width VH CE, CL, DI, INH Input high level current IIH CE, CL, DI, INH; VI = 6.0 V Input low level current Output high-level voltage Output low-level voltage Output middle-level voltage*1 Oscillator frequency Current drain IIL CE, CL, DI, INH; VI = 0 V min typ Unit max 0.1 VDD V 5.0 µA –5.0 µA VOH 1 S1 to S34; IO = –20 µA VLCD – 0.9 V VOH 2 COM1 to COM4; IO = –100 µA VLCD – 0.9 V VOH 3 P1 to P8; IO = –1 mA VLCD – 0.9 VOL 1 S1 to S34; IO = 20 µA 0.9 V VOL 2 COM1 to COM4; IO = 100 µA 0.9 V VOL 3 P1 to P8; IO = 1 mA 0.9 V VMID 1 COM1 to COM4; 1/2 bias, IO = ±100 µA 1/2 VLCD – 0.9 1/2 VLCD + 0.9 V VMID 2 S1 to S34; 1/3 bias, IO = ±20 µA 2/3 VLCD – 0.9 2/3 VLCD + 0.9 V VMID 3 S1 to S34; 1/3 bias, IO = ±20 µA 1/3 VLCD – 0.9 1/3 VLCD + 0.9 V VMID 4 COM1 to COM4; 1/3 bias, IO = ±100 µA 2/3 VLCD – 0.9 2/3 VLCD + 0.9 V VMID 5 COM1 to COM4; 1/3 bias, IO = ±100 µA 1/3 VLCD – 0.9 1/3 VLCD + 0.9 V fOSC OSC; ROSC = 43 kΩ COSC = 680 pF IDD 1 VDD; power saving mode IDD 2 ILCD 1 VDD; VDD = 6.0 V, output open, fosc = 50 k Hz VLCD; power saving mode ILCD 2 VLCD; VLCD = 6.0 V, output open 1/2 bias, fosc = 50 k Hz ILCD 3 VLCD; VLCD = 6.0 V, output open 1/3 bias, fosc = 50 k Hz 40 V 50 60 kHz 5 µA 460 µA 5 µA 100 200 µA 60 120 µA 230 Note: *1 Excluding the bias voltage generation divider resistors built in the VLCD1 and VLCD2. (See Figure 1.) The LC75834JE do not have the S9, S18, S27, S34 output pins. No. 5597-3/18 LC75834E, 75834W, 75834JE VLCD VLCD1 To the common segments drivers VLCD2 Except these resistors VSS A06588 Figure 1 1. When CL is stopped at the low level 2. When CL is stopped at the high level Figure 2 No. 5597-4/18 LC75834E, 75834W, 75834JE Pin Assignments Common driver S2/P2 S1/P1 S9 S8/P8 S35 S34 COM1 COM2 COM3 Block Diagram Segment driver & latch INH OSC Clock generator Shift register VDD VLCD VLCD1 Address detector VLCD2 CE CL DI VSS A06591 Note: The LC75834JE do not have the S9, S18, S27, S34 output pins. No. 5597-5/18 LC75834E, 75834W, 75834JE Pin Functions Pin No. Pin LC75834E, 75834W LC75834JE Active I/O Handling when unused Segment outputs for displaying the display data transferred by serial data input. The pins S1/P1 to S8/P8 can be used as general-purpose output ports when so set up by the control data. — O Open Function S1/P1 to S8/P8 S9 to S34 1 to 8 1 to 8 9 to 34 9 to 30 COM1 COM2 COM3 COM4 35 36 37 38 31 32 33 34 Common driver outputs. The frame frequency fO is given by: fO = (fOSC/512) Hz. — O Open OSC 44 40 Oscillator connection An oscillator circuit is formed by connecting an external resistor and capacitor — I/O VDD CE CL DI 46 47 48 42 43 44 Serial data transfer inputs. These pins are connected to the control microprocessor. I GND L I GND CE: Chip enable CL: Synchronization clock DI: Transfer data H — INH 45 41 Display off control input •INH = low (VSS): Off S1/P1 to S8/P8 = Low (These pins are forcible set to the segment output port function and fixed at the VSS level.) S9 to S34 = Low (VSS), COM1 to COM4 = Low (VSS) •INH = high (VDD): On Note that serial data transfers can be performed when the display is forced off by this pin. VLCD1 41 37 Used to apply the LCD drive 2/3-bias voltage externally. This pin must be connected to VLCD2 when 1/2-bias drive is used. — I Open VLCD2 42 38 Used to apply the LCD drive 1/3-bias voltage externally. This pin must be connected to VLCD1 when 1/2-bias drive is used. — I Open VDD 39 35 Logic block power supply. Provide a voltage in the range 2.7 to 6.0 V. — — — VLCD 40 36 LCD driver block power supply. Provide a voltage in the range 2.7 to 6.0 V. — — — VSS 43 39 Ground pin. Connect to ground. — — — Note: The LC75834JE do not have the S9, S18, S27, S34 output pins. No. 5597-6/18 LC75834E, 75834W, 75834JE Serial Data Transfer Format 1. When CL is stopped at the low level Note: DD ... Direction data No. 5597-7/18 LC75834E, 75834W, 75834JE 2. When CL is stopped at the high level Note: DD ... Direction data • CCB address...............46H • D1 to D136.................Display data (At the LC75834JE, the display data D33 to D36, D69 to D72, D105 to D108, D133 to D136 must be set to 0. • P0 to P3 ......................Segment output port/general-purpose output port switching control data • DR ..............................1/2-bias drive or 1/3-bias drive switching control data • SC...............................Segments on/off control data • BU ..............................Normal mode/power-saving mode control data No. 5597-8/18 LC75834E, 75834W, 75834JE Serial Data Transfer Examples • At the LC75834E and LC75834W when109 or more segments are used, at the LC75834JE when 97 or more segments are used,192 bits of serial data must be sent. Note: At the LC75834JE, the display data D33 to D36, D69 to D72, D105 to D108, D133 to D136 must be set to 0. • At the LC75834E and LC75834W when used with less than 109 segments, at the LC75834JE when used with less than 97 segments, transfer either 48 bits, 96 bits or 144 bits of serial data depending on the number of segments used. However, the serial data shown in the figure below (the display data D1 to D36 and the control data) must be sent. Note: At the LC75834JE, the display data D33 to D36 must be set to 0. Control Data Functions 1. P0 to P3: Segment output port/general-purpose output port switching control data. These control data bits switch the S1/P1 to S8/P8 output pins between their segment output port and general-purpose output port functions. Control data Output pin states P0 P1 P2 P3 S1/P1 S2/P2 S3/P3 S4/P4 S5/P5 S6/P6 S7/P7 S8/P8 0 0 0 0 S1 S2 S3 S4 S5 S6 S7 S8 0 0 0 1 P1 S2 S3 S4 S5 S6 S7 S8 0 0 1 0 P1 P2 S3 S4 S5 S6 S7 S8 0 0 1 1 P1 P2 P3 S4 S5 S6 S7 S8 0 1 0 0 P1 P2 P3 P4 S5 S6 S7 S8 0 1 0 1 P1 P2 P3 P4 P5 S6 S7 S8 0 1 1 0 P1 P2 P3 P4 P5 P6 S7 S8 0 1 1 1 P1 P2 P3 P4 P5 P6 P7 S8 1 0 0 0 P1 P2 P3 P4 P5 P6 P7 P8 Note: Sn (n = 1 to 8): Segment output ports Pn (n = 1 to 8): General-purpose output ports No. 5597-9/18 LC75834E, 75834W, 75834JE Also note that when the general-purpose output port function is selected, the output pins and the display data will have the correspondences listed in the tables below. Output pin Corresponding display data Output pin Corresponding display data S1/P1 D1 S5/P5 D17 S2/P2 D5 S6/P6 D21 S3/P3 D9 S7/P7 D25 S4/P4 D13 S8/P8 D29 For example, if the output pin S4/P4 has the general-purpose output port function selected, it will output a high level (VLCD) when the display data D13 is 1, and will output a low level (VSS) when D13 is 0. 2. DR: 1/2-bias drive or 1/3-bias drive switching control data This control data bit selects either 1/2-bias drive or 1/3-bias drive. DR Drive type 0 1/3-bias drive 1 1/2-bias drive 3. SC: Segments on/off control data This control data bit controls the on/off state of the segments. SC Display state 0 On 1 Off However, note that when the segments are turned off by setting SC to 1, the segments are turned off by outputting segment off waveforms from the segment output pins. 4. BU: Normal mode/power-saving mode control data This control data bit selects either normal mode or power-saving mode. BU Mode 0 Normal mode 1 Power saving mode (The OSC pin oscillator is stopped, and the common and segment output pins go to the VSS level. However, the S1/P1 to S8/P8 output pins that are set to be general-purpose output ports by the control data P0 to P3 can be used as generalpurpose output ports.) No. 5597-10/18 LC75834E, 75834W, 75834JE Display Data to Segment Output Pin Correspondence Segment output pin COM1 COM2 COM3 COM4 S1/P1 D1 D2 D3 D4 S18 D69 D70 D71 D72 S2/P2 D5 D6 D7 D8 S19 D73 D74 D75 D76 Segment output pin COM1 COM2 COM3 COM4 S3/P3 D9 D10 D11 D12 S20 D77 D78 D79 D80 S4/P4 D13 D14 D15 D16 S21 D81 D82 D83 D84 S5/P5 D17 D18 D19 D20 S22 D85 D86 D87 D88 S6/P6 D21 D22 D23 D24 S23 D89 D90 D91 D92 S7/P7 D25 D26 D27 D28 S24 D93 D94 D95 D96 S8/P8 D29 D30 D31 D32 S25 D97 D98 D99 D100 S9 D33 D34 D35 D36 S26 D101 D102 D103 D104 S10 D37 D38 D39 D40 S27 D105 D106 D107 D108 S11 D41 D42 D43 D44 S28 D109 D110 D111 D112 S12 D45 D46 D47 D48 S29 D113 D114 D115 D116 S13 D49 D50 D51 D52 S30 D117 D118 D119 D120 S14 D53 D54 D55 D56 S31 D121 D122 D123 D124 S15 D57 D58 D59 D60 S32 D125 D126 D127 D128 S16 D61 D62 D63 D64 S33 D129 D130 D131 D132 S17 D65 D66 D67 D68 S34 D133 D134 D135 D136 Note: This applies to the case where the S1/P1 to S8/P8 output pins are set to be segment output ports. The LC75834JE do not have the S9, S18, S27, S34 output pins. For example, the table below lists the segment output states for the S11 output pin. Display data D41 D42 D43 D44 Segment output pin (S11) state 0 0 0 0 The LCD segments corresponding to COM1 to COM4 are off. 0 0 0 1 The LCD segments corresponding to COM4 is on. 0 0 1 0 The LCD segments corresponding to COM3 is on. 0 0 1 1 The LCD segments corresponding to COM3 and COM4 are on. 0 1 0 0 The LCD segments corresponding to COM2 is on. 0 1 0 1 The LCD segments corresponding to COM2 and COM4 are on. 0 1 1 0 The LCD segments corresponding to COM2 and COM3 are on. 0 1 1 1 The LCD segments corresponding to COM2, COM3 and COM4 are on. 1 0 0 0 The LCD segments corresponding to COM1 is on. 1 0 0 1 The LCD segments corresponding to COM1 and COM4 are on. 1 0 1 0 The LCD segments corresponding to COM1 and COM3 are on. 1 0 1 1 The LCD segments corresponding to COM1, COM3 and COM4 are on. 1 1 0 0 The LCD segments corresponding to COM1 and COM2 are on. 1 1 0 1 The LCD segments corresponding to COM1, COM2 and COM4 are on. 1 1 1 0 The LCD segments corresponding to COM1 to COM3 are on. 1 1 1 1 The LCD segments corresponding to COM1 to COM4 are on. No. 5597-11/18 LC75834E, 75834W, 75834JE 1/2 Bias, 1/4 Duty Drive Technique COM1 COM2 COM3 COM4 LCD driver output when all LCD segments corresponding to COM1, COM2, COM3, and COM4 are turned off. LCD driver output when only LCD segments corresponding to COM1 are on. LCD driver output when only LCD segments corresponding to COM2 are on. LCD driver output when LCD segments corresponding to COM1 and COM2 are on. LCD driver output when only LCD segments corresponding to COM3 are on. LCD driver output when LCD segments corresponding to COM1 and COM3 are on. LCD driver output when LCD segments corresponding to COM2 and COM3 are on. LCD driver output when LCD segments corresponding to COM1, COM2, and COM3 are on. LCD driver output when only LCD segments corresponding to COM4 are on. LCD driver output when LCD segments corresponding to COM2 and COM4 are on. LCD driver output when all LCD segments corresponding to COM1, COM2,COM3, and COM4 are on. 1/2 Bias, 1/4 Duty Waveforms No. 5597-12/18 LC75833E, 75833W, 75833JE 1/3 Bias, 1/4 Duty Drive Technique COM1 COM2 COM3 COM4 LCD driver output when all LCD segments corresponding to COM1, COM2, COM3, and COM4 are turned off. LCD driver output when only LCD segments corresponding to COM1 are on. LCD driver output when only LCD segments corresponding to COM2 are on. LCD driver output when LCD segments corresponding to COM1 and COM2 are on. LCD driver output when only LCD segments corresponding to COM3 are on. LCD driver output when LCD segments corresponding to COM1 and COM3 are on. LCD driver output when LCD segments corresponding to COM2 and COM3 are on. LCD driver output when LCD segments corresponding to COM1, COM2, and COM3 are on. LCD driver output when only LCD segments corresponding to COM4 are on. LCD driver output when LCD segments corresponding to COM2 and COM4 are on. LCD driver output when all LCD segments corresponding to COM1, COM2,COM3, and COM4 are on. 1/3 Bias, 1/4 Duty Waveforms No. 5597-13/18 LC75834E, 75834W, 75834JE The INH pin and Display Control Since the LSI internal data (the display data and the control data) is undefined when power is first applied, applications should set the INH pin low at the same time as power is applied to turn off the display (LC75834E, LC75834W: This sets the S1/P1 to S8/P8, S9 to S34, and COM1 to COM4 to the VSS level. LC75834JE: This sets the S1/P1 to S8/P8, S10 to S17, S19 to S26, S28 to S33, and COM1 to COM4 to the VSS level.) and during this period send serial data from the controller. The controller should then set the INH pin high after the data transfer has completed. This procedure prevents meaningless displays at power on. (See Figure 3.) Notes on the Power On/Off Sequences Applications should observe the following sequence when turning the LC75834E, LC75834W, and LC75834JE power on and off. • At power on: Logic block power supply (VDD) on → LCD driver block power supply (VLCD) on • At power off: LCD driver block power supply (VLCD) off → Logic block power supply (VDD) off However, if the logic and LCD driver block use a shared power supply, then the power supplies can be turned on and off at the same time. Note: At the LC75834JE, the display data D33 to D36, D69 to D72, D105 to D108, D133 to D136 must be set to 0. Figure 3 Notes on Controller Transfer of Display Data Since the LC75834E, LC75834W, and LC75834JE accept display data divided into four separate transfer operations, we recommend that applications transfer all of the display data within a period of less than 30 ms to prevent observable degradation of display quality. No. 5597-14/18 LC75834E, 75834W, 75834JE Sample Application Circuit 1 1/2 Bias (for use with normal size panels) • LC75834E, LC75834W Note: *2 When a capacitor except the recommended external capacitance (COSC = 680 pF) is connected the OSC pin, we recommend that applications connect the OSC pin with a capacitor in the range 220 to 2200pF. • LC75834JE Note: *2 When a capacitor except the recommended external capacitance (COSC = 680 pF) is connected the OSC pin, we recommend that applications connect the OSC pin with a capacitor in the range 220 to 2200pF. No. 5597-15/18 LC75834E, 75834W, 75834JE Sample Application Circuit 2 1/3 Bias (for use with normal size panels) • LC75834E, LC75834W Note: *2 When a capacitor except the recommended external capacitance (COSC = 680 pF) is connected the OSC pin, we recommend that applications connect the OSC pin with a capacitor in the range 220 to 2200pF. • LC75834JE Note: *2 When a capacitor except the recommended external capacitance (COSC = 680 pF) is connected the OSC pin, we recommend that applications connect the OSC pin with a capacitor in the range 220 to 2200pF. No. 5597-16/18 LC75834E, 75834W, 75834JE Sample Application Circuit 3 1/3 Bias (for use with large panels) • LC75834E, LC75834W Note: *2 When a capacitor except the recommended external capacitance (COSC = 680 pF) is connected the OSC pin, we recommend that applications connect the OSC pin with a capacitor in the range 220 to 2200pF. No. 5597-17/18 LC75834E, 75834W, 75834JE • LC75834JE Note: *2 When a capacitor except the recommended external capacitance (COSC = 680 pF) is connected the OSC pin, we recommend that applications connect the OSC pin with a capacitor in the range 220 to 2200pF. ■ No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. ■ Anyone purchasing any products described or contained herein for an above-mentioned use shall: ① Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: ➁ Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. ■ Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of June 1997. Specifications and information herein are subject to change without notice. No. 5597-18/18