LC7267

Ordering number: EN 1511B CMOS IC LC7267 Digital Display of Clock/Receiving Frequency for Radio Set Applications Functions Package Dimensions unit : mm . Capable of selecting receiving frequency display/time . display. of receiving frequency at each band of FM/MW/LW Display Display element: LED Static/dynamic: Static Withstand voltage at output pin: 15 V Maximum current: 18 mA (VDD = 6.0 to 10.0 V) 3025B-DIP42S [LC7267] . Number of display digits: FM: digits, MW, LW: 4 digits . Covers 5intermediate frequencies shown below. FM: MW, LW: +10.700, +10.725, +10.750, +10.675 MHz –10.700, –10.725, –10.675, –10.650 MHz +450 kHz (1) : 10 kHz-step display +450 kHz (2) : 1 kHz-step display +455 kHz : 1 kHz-step display +469 kHz : 1 kHz-step display SANYO : DIP42S . In FM reception applications, the LB3500 (÷8 prescaler) is jointly. . used selections of display system (12-hour system with PM Two . sign, 24-hour system). time signal. set time by the . Easy topin for inhibiting time setting with display unlighted. Inhibit . 7.2 MHz crystal oscillator for reference frequency. . Supply voltage V : 4.5 to 10.0 V. DD SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN 63098HA (II) No.1511 - 1/10 LC7267 Specifications Absolute Maximum Ratings at VSS = 0 V Parameter Maximum supply voltage Input voltage Output voltage Allowable power dissipation Allowable power dissipation of segment outputs Symbol VDD max VIN VO1 VO2 Pd max Pd seg 1 Pd seg 2 Pd seg 3 Pd seg 4 Pd seg 5 Pd seg 6 Operating temperature Storage temperature Topr Tstg XOUT Output pins other than XOUT, output : off Ta % 65°C PM VDD = 4.5 to 6 V, IOL = 50 mA b&e VDD = 4.5 to 6 V, IOL = 33 mA Other outputs VDD = 4.5 to 6.5 V, IOL = 16.5 mA PM VDD = 6.0 to 10 V, IOL = 54 mA b&e VDD = 6.0 to 10 V, IOL = 36 mA Other outputs VDD = 6.0 to 10 V, IOL = 18 mA Conditions Ratings –0.3 to +11 –0.3 to VDD+0.3 –0.3 to VDD+0.3 0 to 15 550 35 30 15 38 25 13 –30 to +65 –40 to +125 Unit V V V V mW mW mW mW mW mW mW °C °C Allowable Operating Conditions at Ta = 25°C, VSS = 0 V, VDD = 4.5 to 10 V Parameter Supply voltage Symbol VDD VIH1 VIH2 VIH3 VIL1 VIL2 VIL3 Input medium-level voltage Input frequency VIM fIN1 fIN2 fIN3 VIN1 Input amplitude VIN2 VIN3 Segment current Iseg 1 Iseg 2 Iseg 3 Conditions INHI, CTR/CLK, DEMAND SET, FM/AM FIF1, FIF2, FIF3 AIF1, AIF2, 12H/24H INHI, CTR/CLK, DEMAND SET, FM/AM FIF1, FIF2, FIF3 AIF1, AIF2, 12H/24H SET FMI, sine wave, capacitive coupling, VIN1 = 0.7Vp-p AMI, sine wave, capacitive coupling, VIN2 = 0.5Vp-p XIN, sine wave, capacitive coupling, VIN3 = 1Vp-p FMI, sine wave, capacitive coupling, fIN1 = 1 to 18 MHz AMI, sine wave, capacitive coupling, fIN2 = 0.5 to 3 MHz XIN, sine wave, capacitive coupling, fIN3 = 0.2 to 7.5 MHz PM b&e Other outputs seg min 4.5 0.8VDD 0.85VDD 0.9VDD 0 0 0 0.45VDD 1 0.5 0.2 0.7 0.5 1.0 typ max 10 VDD VDD VDD 0.2VDD 0.15VDD 0.1VDD 0.55VDD 18 3 7.5 0.9VDD 0.9VDD 0.9VDD 45 30 15 Unit V V V V V V V V MHz MHz MHz Vp-p Vp-p Vp-p mA mA mA Input high-level voltage Input low-level voltage Electrical Characteristics at VDD = 4.5 to 10 V, VSS = 0 V Parameter Symbol IIH1 Input high-level current IIH2 IIH3 IIL VIF1 VIF2 Conditions FIF1 to FIF3, AIF1 to AIF2, SET, FM/AM, 12H/24H CTR/CLK, VI = VDD INHI, VI = VSS DEMAND, VI = VDD FIF1 to FIF3, AIF1 to AIF2, SET, FM/AM, 12H/24H, CTR/CLK, VI = VSS INHI, VI = open DEMAND, VI = open min 0 40 40 –10 0 0 typ max 10 1000 1000 0 0.2 0.1VDD Unit µA µA µA µA V V Input low-level current Input floating voltage Continued next page. No. 1511- 2/10 LC7267 Continued from preceding page. Parameter Output low-level voltage Output off leakage current Symbol VOL1 VOL2 VOL3 IOFF Conditions PM VDD = 4.5 to 10 V, IOL = 45 mA b&e VDD = 4.5 to 10 V, IOL = 30 mA Other outputs seg, VDD = 4.5 to 10 V, IOL = 15 mA All segments output pins, VOUT = 13 V FM mode, FM/AM = VDD, fIN1 = 18 MHz, 0.7Vp-p (or AM mode, FM/AM = VSS, fIN2 = 3 MHz, 0.5Vp-p) fIN3 = 7.2 MHz, 1Vp-p, FIF1, FIF2, FIF3 = VDD AIF1, AIF2 = VDD 12H/24H, CTR/CLK, INHI, DEMAND = VDD min 0 0 0 0 typ max 1.0 1.0 1.0 10 Unit V V V µA Current drain IDD 18 mA Pin Assignment Configuration and Display Font 4 or 4-1/2-digit segment LED’s are used to display time and frequency in the display font shown below. Font Lighting System Static lighting Display Range . Frequency (MW, LW) . Frequency (FM) . Clock (12-hour) . Clock (24-hour) Pin Description 000 kHz to 1999 kHz (The highest-order digit ‘‘0’’ is blanked out.) 00.00 MHz to 199.95 MHz (The highest-order digit ‘‘0’’ is blanked out.) PM 12:00 to PM 11:59 → 12:00 to 11:59 ↑ 0:00 to 23:59 (The highest-order digit ‘‘0’’ is blanked out.) . a to g, PM, b&e: LED driver pin No. 1511- 3/10 LC7267 .V .X DD, IN, VSS: XOUT: Power supply pin Crystal oscillator, input amplifier pin Crystal oscillator Input amplifier . FIF1, FIF2, FIF3: FM IF offset value select pin FIF1 FIF2 FIF3 IF (MHz) 0 0 0 +10.700 0 0 1 +10.725 0 1 0 +10.675 0 1 1 +10.750 1 0 0 –10.700 1 0 1 –10.725 1 1 0 –10.675 1 1 1 –10.650 . AIF1, AIF2: AM IF offset value select pin AIF1 AIF2 IF (kHz) Display step 0 1 +450 (1) 10 kHz 0 0 +450 (2) 1 0 +455 1 kHz step 1 1 +469 1: High level 0: Low level (Note) 450 kHz (1): 10 kHz-step display, others: 1 kHz-step display . FMI, AMI: . FM/AM: Local OSC signal input pin FMI: For FM AMI: For MW, LW FM/MW, LW select pin FM: High level MW, LW: Low level CTR (Counter): High level CLK (Clock): Low level . CTR/CLK: Frequency display/time display select pin . DEMAND: Input pin for instructing execution of setting CTR/CLK 0 0 DEMAND 1 0 Time display mode MODE Mode of setting by the time signal and hours-minutes setting mode . SET: Input pin for setting hours-minutes This pin is set at ‘‘M’’ level normally. The input signal of ‘‘H’’/‘‘L’’ level acts as follows: When in the mode of setting by the time signal and hours-minutes setting mode (CTR/CLK = ‘‘L’’, DEMAND = ‘‘H’’) High level: Execution of hours setting Advance at a 2 Hz rate 1.2 seconds after the pin is set to ‘‘H’’ level. Low level: Execution of setting by the time signal and minutes setting Advance at a 2 Hz rate 1.2 seconds after the pin is set to ‘‘L’’ level. Setting by the time signal is executed when the pin is set off within 1.0 second after set to ‘‘L’’ level. No carry to high-order digit occurs. . INHI: . 12H/24H: Input pin for turning OFF the segment pins, inhibiting the SET/DEMAND pin from functioning, and preventing the AMI amp from operating High level: Normal operation Low level: Segment pin OFF, SET/DEMAND pin function inhibit Input pin for selecting 12-hour system with PM sign/24-hour system High level: 12-hour system with PM sign Low level: 24-hour system No. 1511- 4/10 LC7267 Make connection of the highest-order digit as shown below. 12-hour system 24-hour system Timing Chart Time setting (CTR/CLK = ‘‘L’’) DEMAND pin Setting by the time signal and minutes setting SET pin Flashing (2Hz) for setting by the time signal Mode of setting by the time signal Execution of counting 30min. or more as 1hr. and disregarding 29min. or less 1.2 s. or more Flashing stop Hours-minutes setting mode Minutes advance at a 2 Hz rate Hours-minutes display Within 1.0 s. Hours-minutes display DEMAND pin Hours setting and minutes setting Flashing (2 Hz) for setting by the time signal Hours-minutes setting mode Flashing stop Flashing (2 Hz) for setting by the time signal Hours-minutes setting mode Flashing stop SET pin (Hours setting) 1.2s Execution of hours setting (Advance at a 2 Hz rate) 1.2s t: Approximately 100 ms. Execution of minutes setting (Advance at a 2 Hz rate) Sample Display at Each Display (Setting by the time signal, hours-minutes display, hours-minutes setting) Setting by the time signal: Setting to PM 12:00 Execute setting by the time signal with the SET pin. Flashing at a 2 Hz rate when in the mode of setting by the time signal PM sign When setting by the time signal is executed, minutes become 00. If the minutes display is at 30 to 59, hours are incremented by 1 (counting 30 or more as 1 hr. and disregarding 29 or less). Flashing at a 2 Hz rate Hours-minutes display: Display of PM 12:34 The PM sign flashes in the afternoon when in the mode of setting by the time signal, hours-minutes display, hours-minutes setting. (for 12-hour system). PM sign Hours-minutes setting: Setting to PM 11:45 from PM 11:23 Set the SET pin to VDD or VSS. After lapse of 1.2 s, flashing stops and hours or minutes advance at a 2 Hz rate. PM sign Flashing at a 2 Hz rate PM sign Set the SET pin to VSS, and setting is executed. Set the SET pin to VDD, and setting is executed. No. 1511- 5/10 LC7267 Equivalent Circuit Block Diagram No. 1511- 6/10 Surge voltage eliminator 5-digit display in FM use LED display tube (anode common) Sample Application Circuit 1 AM local Interface FM/AM display select SW 1/8 prescaler LB3500 FM local Interface LC7267 Hoursminutes setting SW *: Ceramic capacitor (Must be mounted as close to each pin as possible.) No. 1511- 7/10 4-digit display in FM use Surge voltage eliminator Reference: LED display tube (For details, see LED catalog.) Sample Application Circuit 2 LED display tube (anode common) AM local Interface FM/AM display select SW Interface (Note) How to reduce current dissipation when display is turned off 1/8 prescaler LB3500 Hoursminutes setting SW FM local LC7267 To reduce current dissipation when display is turned off (INHI: ‘‘L’’), the circuit shown below must be connected to the FMI pin. *: Ceramic capacitor (Must be mounted as close to each pin as possible.) No. 1511- 8/10 LC7267 IDD – VDD For FMI input: 18 MHz, 0.7 Vp-p FM/AM = ‘‘H’’ For AMI input: 3 MHz, 0.5 Vp-p FM/AM = ‘‘L’’ Common conditions 12H/24H, CTR/CLK, INHI, DEMAND = VDD FIF1, FIF2, FIF3 = VDD AIF1, AIF2 = VDD For FMI input For AMI input Current drain, IDD – mA Current drain, IDD – mA IDD – Ta For FMI input: 18 MHz, 0.7 Vp-p FM/AM = ‘‘H’’ For AMI input: 3 MHz, 0.5 Vp-p FM/AM = ‘‘L’’ Common conditions FIF1, FIF2, FIF3 = VDD AIF1, AIF2 = VDD 12H/24H, CTR/CLK, INHI, DEMAND = VDD For FMI input For AMI input Supply voltage, VDD – V Vp-p – fI1 Ambient temperature, Ta – °C Vp-p – fI2 Input amplitude, Vp-p – Ω FMI input frequency, fI1 – Hz VDD – fI1 FM/AM = VDD Upper standard value VDD = 15 V or more Input amplitude, Vp-p – Ω AMI input frequency, fI2 – Hz VDD – fI2 Supply voltage, VDD – V Supply voltage, VDD – V Upper standard value Lower standard value FMI input frequency, fI1 – Hz Vt – VDD INHI threshold voltage, Vt – V SET threshold voltage, Vt – V AMI Input Frequency, fI2 – Hz Vt – VDD High-level threshold voltage Upper standard value Lower standard value Low-level threshold voltage Supply voltage, VDD – V Supply Voltage, VDD–V No. 1511- 9/10 LC7267 IOL – VOL Output impedance, ROUT – Ω Segment outputs other than PM, 5b&e This data is in case of flowing current to one segment only. ROUT – VDD Output current, IOL – mA Segment output (IOL = 30 mA) of 5b&e Segment outputs (IOL = 15 mA) other than PM, 5b&e Segment output (IOL = 45 mA) of PM Output voltage, VOL – V Supply voltage , VDD – V 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: 2 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, 1998. Specifications and information herein are subject to change without notice. PS No. 1511- 10/10