View LC75874W_569885.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Ordering number : EN5800
CMOS LSI
LC75874E, 75874W
1/4-Duty General-Purpose LCD Display Driver
Overview
The LC75874E and LC75874W are 1/4-duty generalpurpose microprocessor-controlled LCD driver that can be used in applications such as frequency display in products with electronic tuning. In addition to being able to drive up to 264 segments directly, the LC75874E and LC75874W can also control up to 8 general-purpose output ports. Since the LC75874E and LC75874W 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 V, regardless of the logic block power-supply voltage.
Package Dimensions
unit: mm 3174-QFP80E
[LC75874E]
Features
* Support for 1/4-duty 1/2-bias or 1/4-duty 1/3-bias drive techniques under serial data control (up to 264 segments) * Serial data input supports CCB format communication with the system controller. * Serial data control of the power-saving mode based backup function and the all segments forced off function. * Serial data control of switching between the segment output port and general-purpose output port functions. * High generality, since display data is displayed directly without the intervention of a decoder circuit. * Independent VLCD for the LCD driver block (VLCD can be set to any voltage in the range 2.7 to 6.0 V, regardless of the logic block power-supply voltage.) * The INH pin allows the display to be forced to the off state. * RC oscillator circuit
SANYO: QFP80E
unit: mm 3220-SQFP80
[LC75874W]
SANYO: SQFP80
* CCB is a trademark of SANYO ELECTRIC CO., LTD. * CCB is SANYO's original bus format and all the bus addresses are controlled by SANYO.
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
31398RM (OT) No. 5800-1/16
LC75874E, 75874W
Specifications
Absolute Maximum Ratings at Ta = 25C, VSS = 0 V
Parameter Maximum supply voltage Symbol VDD max VLCD max VIN1 Input voltage VIN2 VIN3 Output voltage VOUT1 VOUT2 IOUT1 Output current IOUT2 IOUT3 Allowable power dissipation Operating temperature Storage temperature Pd max Topr Tstg VDD VLCD CE, CL, DI, INH OSC VLCD1, VLCD2 OSC S1 to S66, COM1 to COM4, P1 to P8 S1 to S66 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 5 200 -40 to +85 -55 to +125 V A mA mW C C V Unit V
Allowable Operating Ranges at Ta = -40 to +85C, VSS = 0 V
Parameter 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 Ratings 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
Supply voltage
V
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
V V V k pF kHz ns ns ns ns ns ns ns ns ns s
No. 4465-No. 5800-2/16
LC75874E, 75874W Electrical Characteristics for the Allowable Operating Ranges
Parameter Hysteresis Input high-level current Input low-level current Symbol VH IIH IIL VOH1 Output high-level voltage VOH2 VOH3 VOL1 Output low-level voltage VOL2 VOL3 VMID1 VMID2 Output middle-level voltage*1 VMID3 VMID4 VMID5 Oscillator frequency fOSC IDD1 IDD2 Current drain ILCD1 ILCD2 ILCD3 CE, CL, DI, INH CE, CL, DI, INH: VI = 6.0 V CE, CL, DI, INH: VI = 0 V S1 to S66: IO = -20 A COM1 to COM4: IO = -100 A P1 to P8: IO = -1 mA S1 to S66: 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 S66: 1/3 bias, IO = 20 A S1 to S66: 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, outputs open, fOSC = 50 kHz VLCD: Power-saving mode VLCD: VLCD = 6.0 V, outputs open, 1/2 bias, fOSC = 50 kHz VLCD: VLCD = 6.0 V, outputs open, 1/3 bias, fOSC = 50 kHz 200 120 230 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 5 400 240 A kHz V V V Conditions Ratings min typ 0.1 VDD 5.0 max Unit V A A
Note: *1 Excluding the bias voltage generation divider resistors built in the VLCD1 and VLCD2. (See Figure 1.)
VLCD
VLCD1
VLCD2
Figure 1
No. 4465No. 5800-3/16
LC75874E, 75874W 1. When CL is stopped at the low level
2. When CL is stopped at the high level
Figure 2 Block Diagram
No. 4465-No. 5800-4/16
LC75874E, 75874W Pin Functions
Symbol S1/P1 to S8/P8 S9 to S66 COM1 COM2 COM3 COM4 OSC Pin No.
LC75874E LC75874W
Function Segments outputs for displaying the display data transferred by serial data input. The S1/P1 to S8/P8 pins can be used as general-purpose output ports under serial data control.
Active
I/O
Handling when unused
1 to 8 9 to 66 67 68 69 70 76
79, 80, 1 to 6 7 to 64 65 66 67 68 74
--
O
Open
Common driver outputs. The frame frequency fo is fOSC/512 Hz.
--
O
Open
Oscillator connection. An oscillator circuit can be formed by connecting an external resistor and capacitor at this pin. Serial data transfer inputs. Connected to the controller. CE: Chip enable CL: Synchronization clock DI: Transfer data Display off control input INH = low (VSS) ......Display forced off S1/P1 to S8/P8 = low (VSS) (These pins are forcibly set to the segment output port function and held at the VSS level.) S9 to S66 = low (VSS) COM1 to COM4 = low (VSS) INH = high (VDD).....Display on However, serial data transfer is possible when the display is forced off by this pin.
--
I/O
VDD
CE CL DI
78 79 80
76 77 78
H
I I GND
--
I
INH
77
75
L
I
GND
VLCD1
73
71
Used to apply the LCD drive 2/3 bias voltage externally. Connect this pin to VLCD2 when using a 1/2-bias drive scheme. Used to apply the LCD drive 1/3 bias voltage externally. Connect this pin to VLCD1 when using a 1/2-bias drive scheme. Logic block power supply. In the range 2.7 to 6.0 V. LCD driver block power supply. In the range 2.7 to 6.0 V. Ground pin. Connect to ground.
--
I
Open
VLCD2 VDD VLCD VSS
74
72 69 70 73
--
I
Open
71 72 75
-- -- --
-- -- --
-- -- --
Pin Assignments
Top view
No. 4465No. 5800-5/16
LC75874E, 75874W Serial Data Transfer Format 1. When CL is stopped at the low level
CCB address 8 bits
Display data 68 bits
Control data 10 bits
DD
2 bits
CCB address 8 bits
Display data 68 bits
Fixed data 10 bits
DD
2 bits
CCB address 8 bits
Display data 64 bits
Fixed data 14 bits
DD
2 bits
CCB address 8 bits Note: DD is the direction data.
Display data 64 bits
Fixed data 14 bits
DD
2 bits
No. 4465-No. 5800-6/16
LC75874E, 75874W 2. When CL is stopped at the high level
CCB address 8 bits
Display data 68 bits
Control data 10 bits
DD
2 bits
CCB address 8 bits
Display data 68 bits
Control data 10 bits
DD
2 bits
CCB address 8 bits
Display data 64 bits
Control data 14 bits
DD
2 bits
CCB address 8 bits Note: DD is the direction data.
Display data 64 bits
Control data 14 bits
DD
2 bits
* * * * * *
CCB address......45H D1 to D264........Display data 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. 4465-No. 5800-7/16
LC75874E, 75874W Serial Data Transfer Example 1. When 201 or more segments are used All 320 bits of serial data must be sent.
8 bits 80 bits
2. When fewer than 201 segments are used Either 80, 160 or 240 bits of serial data may be sent, depending on the number of segments used. However, the serial data shown below (the D1 to D68 display data and the control data) must be sent.
8 bits 80 bits
Control Data Functions 1. P0 to P3: Segment output port/general-purpose output port switching control data These control data bits switch the segment output port/general-purpose output port functions of the S1/P1 to S8/P8 output pins.
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 state 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 port function Pn (n = 1 to 8): General-purpose output port function
Note that when the general-purpose output port function is selected, the correspondence between the output pins and the display data will be that shown in the table.
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 general-purpose output port function is selected for the S4/P4 output pin, that output pin will output a high level (VLCD) when the display data D13 is 1, and a low level (VSS) when the D13 is 0.
No. 4465-No. 5800-8/16
LC75874E, 75874W 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 scheme 1/3-bias drive 1/2-bias drive
3. SC: Segment on/off control data This control data controls the on/off state of the segments.
SC 0 1 Display state On Off
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. In this mode, the OSC pin oscillator is stopped and the common and segment output pins go to the V SS level. However, the S1/P1 to S8/P8 output pins can be used as general-purpose output ports under the control of the data bits P0 to P3. Mode
No. 4465-No. 5800-9/16
LC75874E, 75874W Display Data and Output Pin Correspondence
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 S18 S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 S30 S31 S32 S33 COM1 D1 D5 D9 D13 D17 D21 D25 D29 D33 D37 D41 D45 D49 D53 D57 D61 D65 D69 D73 D77 D81 D85 D89 D93 D97 D101 D105 D109 D113 D117 D121 D125 D129 COM2 D2 D6 D10 D14 D18 D22 D26 D30 D34 D38 D42 D46 D50 D54 D58 D62 D66 D70 D74 D78 D82 D86 D90 D94 D98 D102 D106 D110 D114 D118 D122 D126 D130 COM3 D3 D7 D11 D15 D19 D23 D27 D31 D35 D39 D43 D47 D51 D55 D59 D63 D67 D71 D75 D79 D83 D87 D91 D95 D99 D103 D107 D111 D115 D119 D123 D127 D131 COM4 D4 D8 D12 D16 D20 D24 D28 D32 D36 D40 D44 D48 D52 D56 D60 D64 D68 D72 D76 D80 D84 D88 D92 D96 D100 D104 D108 D112 D116 D120 D124 D128 D132 Output pin S34 S35 S36 S37 S38 S39 S40 S41 S42 S43 S44 S45 S46 S47 S48 S49 S50 S51 S52 S53 S54 S55 S56 S57 S58 S59 S60 S61 S62 S63 S64 S65 S66 COM1 D133 D137 D141 D145 D149 D153 D157 D161 D165 D169 D173 D177 D181 D185 D189 D193 D197 D201 D205 D209 D213 D217 D221 D225 D229 D233 D237 D241 D245 D249 D253 D257 D261 COM2 D134 D138 D142 D146 D150 D154 D158 D162 D166 D170 D174 D178 D182 D186 D190 D194 D198 D202 D206 D210 D214 D218 D222 D226 D230 D234 D238 D242 D246 D250 D254 D258 D262 COM3 D135 D139 D143 D147 D151 D155 D159 D163 D167 D171 D175 D179 D183 D187 D191 D195 D199 D203 D207 D211 D215 D219 D223 D227 D231 D235 D239 D243 D247 D251 D255 D259 D263 COM4 D136 D140 D144 D148 D152 D156 D160 D164 D168 D172 D176 D180 D184 D188 D192 D196 D200 D204 D208 D212 D216 D220 D224 D228 D232 D236 D240 D244 D248 D252 D256 D260 D264
Note: This table assumes that the segment output port function is selected for the S1/P1 to S8/P8 output pins.
For example, the table below lists the 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 Output pin (S11) state The LCD segments corresponding to COM1, COM2, COM3, and COM4 are off. The LCD segments corresponding to COM4 are on. The LCD segments corresponding to COM3 are on. The LCD segments corresponding to COM3 and COM4 are on. The LCD segments corresponding to COM2 are 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 are 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, COM2, and COM3 are on. The LCD segments corresponding to COM1, COM2, COM3, and COM4 are on.
No. 4465-No. 5800-10/16
LC75874E, 75874W 1/4-Duty 1/2-Bias Drive Scheme
COM1
COM2
COM3
COM4
LCD driver output when all LCD segments corresponding to COM1, COM2, COM3, and COM4 are off. LCD driver output when only LCD segments corresponding to COM1 are on (lit). 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.
1/4-Duty 1/2-Bias Waveforms
No. 4465-No. 5800-11/16
LC75874E, 75874W 1/4-Duty 1/3-Bias Drive Scheme
COM1
COM2
COM3
COM4
LCD driver output when all LCD segments corresponding to COM1, COM2, COM3, and COM4 are off. LCD driver output when only LCD segments corresponding to COM1 are on (lit). 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.
1/4-Duty 1/3-Bias Waveforms
No. 4465-No. 5800-12/16
LC75874E, 75874W Display Control and the INH Pin Since the LSI internal data (the display data D1 to D264 and the control data) is undefined when power is first applied, applications should prevent meaningless displays with the following procedure. First, set the INH pin low at the same time as power is applied to turn off the display. This will set the S1/P1 to S8/P8, S9 to S66, and COM1 to COM4 pins low. While the INH pin is held low, the control microprocessor should send the serial data. Finally, the application can set the INH pin to high. (See Figure 3.) Notes on Power Supply Sequences Applications must observe the following sequences when power is turned on or off. * Power on: Turn on the logic power supply (VDD) first then turn on the LCD driver power supply (VLCD). * Power off: Turn off the LCD driver power supply (VLCD) first then turn off the logic power supply (VDD). 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.
Transfer of display and control data Internal data (D1 to D68, P0 to P3, DR, SC, BU) Undefined Defined Undefined
Notes: t1 0 t2 > 0 t3 0 (t2 > t3) tc ....... 10 s min.
Internal data (D69 to D136)
Undefined
Defined
Undefined
Internal data (D137 to D200)
Undefined
Defined
Undefined
Internal data (D201 to D264)
Undefined
Defined
Undefined
Figure 3 Notes on Controller Transfer of Display Data Since the LC75874E and LC75874W accept the display data (D1 to D264) divided into four separate transfer operations, we recommend that applications make a point of completing all four data transfers within a period of less than 30 ms to prevent observable degradation of display quality.
No. 4465-No. 5800-13/16
LC75874E, 75874W Sample Application Circuit 1 1/2 Bias (for normal LCD panels)
General-purpose output ports
*2
Used for functions such as backlight control
C 0.047 F
From the controller
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 2200 pF.
Sample Application Circuit 2 1/2 Bias (for large LCD panels)
General-purpose output ports
*2
Used for functions such as backlight control
10 k R 1 k C 0.047 F
From the controller
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 2200 pF.
LCD panel (up to 264 segments)
LCD panel (up to 264 segments)
No. 4465-No. 5800-14/16
LC75874E, 75874W Sample Application Circuit 3 1/3 Bias (for nornal LCD panels)
General-purpose output ports Used for functions such as backlight control
*2
C 0.047 F
From the controller
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 2200 pF.
Sample Application Circuit 4 1/3 Bias (for large LCD panels)
General-purpose output ports Used for functions such as backlight control
*2
10 k R 1 k C 0.047 F
From the controller
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 2200 pF.
LCD panel (up to 264 segments)
LCD panel (up to 264 segments)
No. 4465-No. 5800-15/16
LC75874E, 75874W
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: 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 March, 1998. Specifications and information herein are subject to change without notice. PS No. 5800-16/16

▲Up To Search▲

Price & Availability of LC75874W

	To Download LC75874W Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .