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Ordering number : EN4532C432
CMOS LSI
LC75821E, 75821W
LCD Display Drivers
Overview
The LC75821E and LC75821W are general-purpose LCD display drivers that can be used for frequency display in microprocessor-controlled radio receivers and in other display applications.
Package Dimensions
unit: mm 3159-QFP64E
[LC75821E]
17.2 14.0 1.0 48 1.0 49 1.0 33 32 1.6 1.6 0.15
Features
* 53 segment outputs (the maximum for static drive) * Two drive types: static (1/1) duty (53 segments) and 1/2 duty (104 segments) * Data input: 3 serial input pins * INH pin for turning off all display output * The difference form the LC7582: The LC75821E, LC75821W are A/D converter, DSP function-removed versions of the LC7582 of which the functions other than the two can be used with pin compatibility with the LC7582 kept.
17.2 14.0
1.0
64 1 0.8 0.35 17 16 3.0max 0.1 2.7
15.6
0.8 0.8
SANYO: QIP64E
unit: mm 3190-SQFP64
[LC75821W]
12.0 10.0 1.25 1.25 48 49 0.5 0.18 33 32 1.25 0.15
12.0 10.0 0.5
1.25
64 1 16
17
0.5
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-0005 JAPAN
22898HA(OT)/12395TH(KOTO)/N1093(KOTO) No. 4532-1/10
0.1 1.7max 0.5
SANYO: SQFP64
LC75821E, 75821W
Specifications
Absolute Maximum Ratings at Ta = 25C, VSS = 0 V
Parameter Maximum supply voltage Symbol VDD max VLCD VIN1 VIN2 VOUT IOUT1 IOUT2 Pd max Topr Tstg VDD VLCD CE, CLK, DATA, INH OSC: output off OSC: output off S1 to S53 COM1, COM2 Ta = 85C Conditions Ratings -0.3 to +7.0 -0.3 to VDD + 0.3 -0.3 to +7.0 -0.3 to VDD + 0.3 -0.3 to VDD + 0.3 100 1.0 100 -40 to +85 -55 to +125 Unit V V V V V A mA mW C C
Input voltage Output voltage Output current Allowable power dissipation Operating temperature Storage temperature
Allowable Operating Ranges at Ta = -40 to +85C, VSS = 0 V
Parameter Supply voltage Input high-level voltage Input high-level voltage Input low-level voltage Input low-level voltage Recommended external resistance Recommended external capacitance Guaranteed oscillation range Clock low-level pulse width Clock high-level pulse width Data setup time Data hold time Symbol VDD VLCD VIH1 VIH2 VIL1 VIL2 ROSC COSC fOSC toL toH tsup tdh t1 Serial data pulse width t2 t3 t4 4 VDD VLCD INH CE, CLK, DATA INH CE, CLK, DATA OSC OSC OSC CLK CLK CLK, DATA CLK, DATA CE, DATA CE, CLK 25 0.25 0.25 0.25 0.25 1 1.25 1 Conditions min 3.0 3.0 0.7 VDD 0.8 VDD 0 0 51 680 50 100 typ max 6.5 VDD 6.5 6.5 0.3 VDD 0.2 VDD Unit V V V V V V k pF kHz s s s s s s s s
Electrical Characteristics for the Allowable Operating Ranges
Parameter Input high-level current Input low-level current Output high-level voltage Output high-level voltage Output low-level voltage Output low-level voltage Mid-level voltage Oscillator frequency Hysteresis voltage Current drain Symbol IIH IIL VOH1 VOH2 VOL1 VOL2 VMID1 VMID2 fOSC VH IDD ILCD VLCD Conditions CE, CLK, DATA, INH: VI = 6.5 V CE, CLK, DATA, INH: VI = 0 V S1 to S53: IO = -10 A COM1, COM2: IO = -100 A S1 to S53: IO = 10 A COM1, COM2: IO = 100 A COM1, COM2: VLCD = 6.5 V, IO = 100 A COM1, COM2: VLCD = 3.0 V, IO = 100 A OSC: R = 51 k, C = 680 pF CE, CLK, DATA: VDD = 5 V 2.65 0.9 40 0.3 0.6 2 3.25 1.5 50 -5 VDD - 1.0 VLCD - 0.6 1.0 0.6 3.85 2.1 60 min typ max 5 Unit A A V V V V V V kHz V mA mA
No. 4532-2/10
LC75821E, 75821W Pin Assignment
Block Diagram
Pin Functions
Pin S1 to S53 COM1, COM2 VLCD OSC CE, CLK, DATA VSS, VDD Segment output pins Common output pins (Only COM1 is used in static (1/1) drive. COM2 must be left open in that mode.) LCD bias voltage setting Oscillator connection Serial data transfer inputs Power supply Display off control input INH = low (VSS) ..........Display off (S1 to S53, COM1, COM2 = low) INH = high (VDD).........Display on Note that serial data transfers can be performed when display output is forced off. Make no connections to this pin. Function
INH
OPEN
No. 4532-3/10
LC75821E, 75821W Data Transfer Format 1. Static (1/1) duty
Transfer direction (56 bits)
2. 1/2 duty (Only 56 bits need to be transferred if there are no more than 52 display segments. The transfer format is identical to the static duty case. It is not possible to change the D54 to D106 data without specifying the D1 to D53 data.)
Transfer direction (112 bits)
The values of bits D53 and D106 are ignored.(don't care)
D1 to D53: Display data (1/1 duty) Lighted at 1 D1 to D106: Display data (1/2 duty) Unlighted at 0 DP: Drive type selection bit 1/2 duty at 1 1/1 duty at 0 x: don't care Data Transfer Examples 1. Static duty
2. 1/2 duty with 52 or fewer segments
3. 1/2 duty with more than 52 segments
Note: The following transfer format is not allowed in 1/2 duty with 52 or fewer segments.
No. 4532-4/10
LC75821E, 75821W Serial Data 1. Static duty (56 bits)
Internal latch 1
2. 1/2 duty (112 bits)
Internal latch 1 Internal latch 2
Output Waveforms 1. Static duty
Segment off period
Segment on period
No. 4532-5/10
LC75821E, 75821W 2. 1/2 duty
S1 to S52 outputs when the COM1 segment is on
S1 to S52 outputs when the COM2 segment is on
S1 to S52 outputs when both the COM1 and COM2 segments are on
S1 to S52 outputs when both the COM1 and COM2 segments are off
Display Examples 1. Static drive (1/1 duty)
Example with 40 segments (Up to 53 segments can be driven.)
Note: Numbers in circles indicate the number of segments used.
2. 1/2 duty drive
Example with 80 segments (Up to 104 segments can be driven.)
No. 4532-6/10
LC75821E, 75821W Sample Application Circuit 1
From the controller
Sample Application Circuit 2
From the controller
Note: The internal display data is undefined when power (VDD) is first applied. Since a meaningless pattern will be displayed if the display is turned on in that state, the display should be turned off by setting INH low and turned on only after display data has been sent from the controller.
No. 4532-7/10
LC75821E, 75821W Transfer (external input) Data/Output Pin Correspondence
DP Output pin S1 0 1/1 duty D1 1 1/2 duty D1 D2 D3 D4 D5 D6 COM1 COM2
q q q q q q
S2
D2
S3
D3
S26
D26
D51 D52 D54 D55 D56 D57
q q q q q q
S27
D27
S28
D28
S43
D43
D86 D87 D88 D89 D90 D91 D92 D93 D94 D95 D96 D97 D98 D99 D100 D101 D102 D103 D104 D105 Always on Always on
q q q q q q q q q q q q q q q q q q q q q q
S44
D44
S45
D45
S46
D46
S47
D47
S48
D48
S49
D49
S50
D50
S51
D51
S52
D52
S53
D53
Note: Only COM1 is used in static (1/1 duty) drive.
No. 4532-8/10
LC75821E, 75821W Oscillator Frequency Refer to the figure below when determining the oscillator frequency.
Oscillator frequency, fOSC - kHz
Resistance x capacitance value, CR x 10-5 (s)
Figure 1 LC75821E, 75821W Oscillator Frequency vs. CR Constant
Oscillator frequency, fOSC - kHz
Power supply voltage, VDD - V
Oscillator frequency, fOSC - kHz
Ambient temperature, Ta - C
Figure 2 LC75821E, 75821W Oscillator Frequency vs. VDD
Recommended range for external resistance: 10 to 100 k (Carbon resistance) Recommended range for external capacitance: 330 to 3300 pF 330 to 820 pF: (Ceramic capacitance with a zero temperature coefficient) 1000 to 3300 pF: (Mylar capacitance with a positive temperature coefficient)
No. 4532-9/10
LC75821E, 75821W
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 February, 1998. Specifications and information herein are subject to change without notice. PS No. 4532-10/10

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