Ordering number : EN4532C432 CMOS LSI LC75821E, 75821W LCD Display Drivers Overview Package Dimensions 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. unit: mm 3159-QFP64E [LC75821E] 17.2 14.0 1.0 48 1.6 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. 1.6 1.0 33 0.15 64 17 1 16 0.8 0.35 0.1 2.7 3.0max 1.0 0.8 17.2 14.0 1.0 32 49 15.6 0.8 SANYO: QIP64E unit: mm 3190-SQFP64 [LC75821W] 12.0 10.0 1.25 1.25 0.5 48 1.25 0.18 0.15 33 49 1.25 0.5 12.0 10.0 32 17 64 16 0.1 1.7max 1 0.5 0.5 SANYO: SQFP64 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 LC75821E, 75821W Specifications Absolute Maximum Ratings at Ta = 25°C, VSS = 0 V Parameter Symbol Maximum supply voltage Input voltage Output voltage Output current Allowable power dissipation Conditions Ratings Unit VDD max VDD VLCD VLCD VIN1 CE, CLK, DATA, INH –0.3 to +7.0 V VIN2 OSC: output off –0.3 to VDD + 0.3 V –0.3 to VDD + 0.3 V 100 µA –0.3 to +7.0 V –0.3 to VDD + 0.3 V VOUT OSC: output off IOUT1 S1 to S53 IOUT2 COM1, COM2 1.0 mA Ta = 85°C 100 mW Pd max Operating temperature Topr –40 to +85 °C Storage temperature Tstg –55 to +125 °C Allowable Operating Ranges at Ta = –40 to +85°C, VSS = 0 V Parameter Symbol Conditions min typ max Unit VDD VDD 3.0 6.5 VLCD VLCD 3.0 VDD V Input high-level voltage VIH1 INH 0.7 VDD 6.5 V Input high-level voltage VIH2 CE, CLK, DATA 0.8 VDD 6.5 V Input low-level voltage VIL1 INH 0 0.3 VDD V Input low-level voltage VIL2 CE, CLK, DATA 0 0.2 VDD V Supply voltage V Recommended external resistance ROSC OSC 51 kΩ Recommended external capacitance COSC OSC 680 pF Guaranteed oscillation range fOSC OSC 25 Clock low-level pulse width tøL CLK 0.25 µs Clock high-level pulse width tøH CLK 0.25 µs Data setup time tsup CLK, DATA 0.25 µs Data hold time tdh CLK, DATA 0.25 µs t1 CE, DATA 1 µs t2 CE, CLK Serial data pulse width 50 100 1.25 µs t3 1 t4 kHz 4 µs µs Electrical Characteristics for the Allowable Operating Ranges Parameter Symbol Conditions Input high-level current IIH CE, CLK, DATA, INH: VI = 6.5 V Input low-level current IIL CE, CLK, DATA, INH: VI = 0 V min typ max Unit 5 µA –5 µA VDD – 1.0 V Output high-level voltage VOH1 S1 to S53: IO = –10 µA Output high-level voltage VOH2 COM1, COM2: IO = –100 µA Output low-level voltage VOL1 S1 to S53: IO = 10 µA 1.0 V Output low-level voltage VOL2 COM1, COM2: IO = 100 µA 0.6 V VMID1 COM1, COM2: VLCD = 6.5 V, IO = ±100 µA 2.65 3.25 3.85 V VMID2 COM1, COM2: VLCD = 3.0 V, IO = ±100 µA 0.9 1.5 2.1 V fOSC OSC: R = 51 kΩ, C = 680 pF 40 50 60 kHz VH CE, CLK, DATA: VDD = 5 V 0.3 0.6 mA 2 mA Mid-level voltage Oscillator frequency Hysteresis voltage Current drain IDD ILCD VLCD VLCD – 0.6 V V No. 4532-2/10 LC75821E, 75821W Pin Assignment Block Diagram Pin Functions Pin Function S1 to S53 Segment output pins COM1, COM2 Common output pins (Only COM1 is used in static (1/1) drive. COM2 must be left open in that mode.) VLCD LCD bias voltage setting OSC Oscillator connection CE, CLK, DATA Serial data transfer inputs VSS, VDD Power supply INH 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. OPEN Make no connections to this pin. 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 ×: 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 S2 0 1 1/1 duty 1/2 duty D1 D2 S3 D3 S26 D26 S27 D27 S28 D28 S43 D43 S44 S45 S46 S47 S48 S49 S50 S51 S52 S53 D44 D45 D46 D47 D48 D49 D50 D51 D52 D53 D1 COM1 ● ● D2 D3 ● ● D4 D5 ● ● D6 D51 ● ● D52 D54 ● ● D55 D56 ● ● D57 D86 ● ● D87 D88 ● ● D89 D90 ● ● D91 D92 ● ● D93 D94 ● ● D95 D96 ● ● D97 D98 ● ● D99 D100 ● ● D101 D102 ● ● D103 D104 ● ● D105 Always on Always on COM2 ● ● Note: Only COM1 is used in static (1/1 duty) drive. No. 4532-8/10 LC75821E, 75821W Oscillator Frequency Oscillator frequency, fOSC – kHz Refer to the figure below when determining the oscillator frequency. Resistance × capacitance value, CR × 10–5 (s) Oscillator frequency, fOSC – kHz Oscillator frequency, fOSC – kHz Figure 1 LC75821E, 75821W Oscillator Frequency vs. CR Constant Power supply voltage, VDD – V Ambient temperature, Ta – °C Figure 2 LC75821E, 75821W Oscillator Frequency vs. VDD Recommended range for external resistance: 10 to 100 kΩ (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 ■ 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: ➀ 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 February, 1998. Specifications and information herein are subject to change without notice. PS No. 4532-10/10