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Ordering number : EN5597
CMOS LSI
LC75834E, 75834W, 75834JE
1/4 Duty General-Purpose LCD Drivers
Overview
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.
Package Dimensions
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 = 25C, VSS = 0 V
Parameter Maximum supply voltage Symbol VDD max VLCD max VIN 1 Input voltage VIN 2 VIN 3 Output voltage VOUT 1 VOUT 2 IOUT 1 Output current IOUT 2 IOUT 3 Allowable power dissipation Operating temperature Storage temperature Pd max Topr Tstg VDD VLCD CE, CL, DI, INH OSC VLCD 1, VLCD 2 OSC S1 to S34, COM1 to COM4, P1 to P8 S1 to S34 COM1 to COM4 P1 to P8 Ta = 85C Conditions 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 5 150 -40 to +85 -55 to +125 Unit V V V V V V V A mA mA mW C C
Note: The LC75834JE do not have the S9, S18, S27 S34 output pins.
Allowable Operating Ranges at Ta = -40 to +85C, VSS = 0 V
Ratings Parameter Supply voltage Symbol VDD VLCD VLCD1 VLCD2 VIH VIL ROSC COSC fOSC tds tdh tcp tcs tch toH toL tr tf tc VDD VLCD VLCD1 VLCD2 CE, CL, DI, INH CE, CL, DI, INH OSC OSC OSC CL, DI: Figure 2 CL, DI: Figure 2 CE, CL: Figure 2 CE, CL: Figure 2 CE, CL: Figure 2 CL: Figure 2 CL: Figure 2 CE, CL, DI: Figure 2 CE, CL, DI: Figure 2 INH, CE: Figure 3 10 25 160 160 160 160 160 160 160 160 160 0.8 VDD 0 43 680 50 100 Conditions min 2.7 2.7 2/3 VLCD 1/3 VLCD typ max 6.0 6.0 VLCD VLCD 6.0 0.2 VDD Unit V V V V V V k pF kHz ns ns ns ns ns ns ns ns ns s
Input voltage Input high-level voltage Input low-level voltage Recommended external resistance Recommended external capacitance Guaranteed oscillation range Data setup time Data hold time CE wait time CE setup time CE hold time High-level clock pulse width Low-level clock pulse width Rise time Fall time INH switching time
No. 5597-2/18
LC75834E, 75834W, 75834JE
Electrical Characteristics for the Allowable Operating Ranges
Ratings Parameter Hysteresis width Input high level current Input low level current Symbol VH IIH IIL VOH 1 Output high-level voltage VOH 2 VOH 3 VOL 1 Output low-level voltage VOL 2 VOL 3 VMID 1 VMID 2 Output middle-level voltage*1 VMID 3 VMID 4 VMID 5 Oscillator frequency fOSC IDD 1 IDD 2 ILCD 1 Current drain ILCD 2 ILCD 3 Conditions CE, CL, DI, INH CE, CL, DI, INH; VI = 6.0 V CE, CL, DI, INH; VI = 0 V S1 to S34; IO = -20 A COM1 to COM4; IO = -100 A P1 to P8; IO = -1 mA S1 to S34; IO = 20 A COM1 to COM4; IO = 100 A P1 to P8; IO = 1 mA COM1 to COM4; 1/2 bias, IO = 100 A S1 to S34; 1/3 bias, IO = 20 A S1 to S34; 1/3 bias, IO = 20 A COM1 to COM4; 1/3 bias, IO = 100 A COM1 to COM4; 1/3 bias, IO = 100 A OSC; ROSC = 43 k COSC = 680 pF VDD; power saving mode VDD; VDD = 6.0 V, output open, fosc = 50 k Hz VLCD; power saving mode VLCD; VLCD = 6.0 V, output open 1/2 bias, fosc = 50 k Hz VLCD; VLCD = 6.0 V, output open 1/3 bias, fosc = 50 k Hz 230 1/2 VLCD - 0.9 2/3 VLCD - 0.9 1/3 VLCD - 0.9 2/3 VLCD - 0.9 1/3 VLCD - 0.9 40 50 -5.0 VLCD - 0.9 VLCD - 0.9 VLCD - 0.9 0.9 0.9 0.9 1/2 VLCD + 0.9 2/3 VLCD + 0.9 1/3 VLCD + 0.9 2/3 VLCD + 0.9 1/3 VLCD + 0.9 60 5 460 5 100 60 200 120 min typ 0.1 VDD 5.0 max Unit V A A V V V V V V V V V V V kHz A A A A A
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
Block Diagram
COM3 COM2 COM1 S9 S8/P8 S2/P2 S1/P1
A06591
Common driver INH Clock generator
S35 S34
Segment driver & latch
OSC VDD VLCD VLCD1 VLCD2 VSS
Shift register
Address detector
DI
CL
Note: The LC75834JE do not have the S9, S18, S27, S34 output pins.
CE
No. 5597-5/18
LC75834E, 75834W, 75834JE
Pin Functions
Pin No. Pin S1/P1 to S8/P8 S9 to S34 COM1 COM2 COM3 COM4 OSC CE CL DI
LC75834E, 75834W LC75834JE
Function 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. Common driver outputs. The frame frequency fO is given by: fO = (fOSC/512) Hz. Oscillator connection An oscillator circuit is formed by connecting an external resistor and capacitor Serial data transfer inputs. These pins are connected to the control microprocessor. CE: Chip enable CL: Synchronization clock DI: Transfer data
Active
I/O
Handling when unused
1 to 8 9 to 34 35 36 37 38 44 46 47 48
1 to 8 9 to 30 31 32 33 34 40 42 43 44
--
O
Open
--
O
Open
-- H
I/O
VDD
I --
GND
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. 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. 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. Logic block power supply. Provide a voltage in the range 2.7 to 6.0 V. LCD driver block power supply. Provide a voltage in the range 2.7 to 6.0 V. Ground pin. Connect to ground.
L
I
GND
VLCD1 VLCD2 VDD VLCD VSS
41
37
--
I
Open
42 39 40 43
38 35 36 39
-- -- -- --
I -- -- --
Open -- -- --
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 P0 0 0 0 0 0 0 0 0 1 P1 0 0 0 0 1 1 1 1 0 P2 0 0 1 1 0 0 1 1 0 P3 0 1 0 1 0 1 0 1 0 S1/P1 S1 P1 P1 P1 P1 P1 P1 P1 P1 S2/P2 S2 S2 P2 P2 P2 P2 P2 P2 P2 S3/P3 S3 S3 S3 P3 P3 P3 P3 P3 P3 Output pin states S4/P4 S4 S4 S4 S4 P4 P4 P4 P4 P4 S5/P5 S5 S5 S5 S5 S5 P5 P5 P5 P5 S6/P6 S6 S6 S6 S6 S6 S6 P6 P6 P6 S7/P7 S7 S7 S7 S7 S7 S7 S7 P7 P7 S8/P8 S8 S8 S8 S8 S8 S8 S8 S8 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 S1/P1 S2/P2 S3/P3 S4/P4 Corresponding display data D1 D5 D9 D13 Output pin S5/P5 S6/P6 S7/P7 S8/P8 Corresponding display data D17 D21 D25 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 0 1 Drive type 1/3-bias drive 1/2-bias drive
3. SC: Segments on/off control data This control data bit controls the on/off state of the segments.
SC 0 1 Display state On 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 0 1 Normal mode 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.) Mode
No. 5597-10/18
LC75834E, 75834W, 75834JE
Display Data to Segment Output Pin Correspondence
Segment output pin S1/P1 S2/P2 S3/P3 S4/P4 S5/P5 S6/P6 S7/P7 S8/P8 S9 S10 S11 S12 S13 S14 S15 S16 S17 COM1 D1 D5 D9 D13 D17 D21 D25 D29 D33 D37 D41 D45 D49 D53 D57 D61 D65 COM2 D2 D6 D10 D14 D18 D22 D26 D30 D34 D38 D42 D46 D50 D54 D58 D62 D66 COM3 D3 D7 D11 D15 D19 D23 D27 D31 D35 D39 D43 D47 D51 D55 D59 D63 D67 COM4 D4 D8 D12 D16 D20 D24 D28 D32 D36 D40 D44 D48 D52 D56 D60 D64 D68 Segment output pin S18 S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 S30 S31 S32 S33 S34
COM1 D69 D73 D77 D81 D85 D89 D93 D97 D101 D105 D109 D113 D117 D121 D125 D129 D133
COM2 D70 D74 D78 D82 D86 D90 D94 D98 D102 D106 D110 D114 D118 D122 D126 D130 D134
COM3 D71 D75 D79 D83 D87 D91 D95 D99 D103 D107 D111 D115 D119 D123 D127 D131 D135
COM4 D72 D76 D80 D84 D88 D92 D96 D100 D104 D108 D112 D116 D120 D124 D128 D132 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 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 D42 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 D43 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 D44 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Segment output pin (S11) state The LCD segments corresponding to COM1 to COM4 are off. The LCD segments corresponding to COM4 is on. The LCD segments corresponding to COM3 is on. The LCD segments corresponding to COM3 and COM4 are on. The LCD segments corresponding to COM2 is on. The LCD segments corresponding to COM2 and COM4 are on. The LCD segments corresponding to COM2 and COM3 are on. The LCD segments corresponding to COM2, COM3 and COM4 are on. The LCD segments corresponding to COM1 is on. The LCD segments corresponding to COM1 and COM4 are on. The LCD segments corresponding to COM1 and COM3 are on. The LCD segments corresponding to COM1, COM3 and COM4 are on. The LCD segments corresponding to COM1 and COM2 are on. The LCD segments corresponding to COM1, COM2 and COM4 are on. The LCD segments corresponding to COM1 to COM3 are on. 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.
s 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. s Anyone purchasing any products described or contained herein for an above-mentioned use shall: x 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: 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. s 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

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