LC7267 Sanyo Semiconductor Corporation, LC7267 Datasheet

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LC7267

Manufacturer Part Number
LC7267
Description
Digital display of clock/receiving frequency for radio set application
Manufacturer
Sanyo Semiconductor Corporation
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LC7267
Manufacturer:
SANYO/三洋
Quantity:
20 000
Functions
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Ordering number: EN 1511B
Capable of selecting receiving frequency display/time
display.
Display of receiving frequency at each band of FM/MW/LW
Number of display digits:
Covers intermediate frequencies shown below.
In FM reception applications, the LB3500 ( 8 prescaler) is
used jointly.
Two selections of display system (12-hour system with PM
sign, 24-hour system).
Easy to set time by the time signal.
Inhibit pin for inhibiting time setting with display unlighted.
7.2 MHz crystal oscillator for reference frequency.
Supply voltage V
Display element:
Static/dynamic:
Withstand voltage at output pin: 15 V
Maximum current:
FM: 5 digits, MW, LW: 4 digits
FM:
MW, LW:
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
+450 kHz (1) : 10 kHz-step display
+450 kHz (2) : 1 kHz-step display
+455 kHz
+469 kHz
+10.700, +10.725, +10.750, +10.675 MHz
–10.700, –10.725, –10.675, –10.650 MHz
DD
: 4.5 to 10.0 V.
: 1 kHz-step display
: 1 kHz-step display
Static
18 mA
(V
LED
DD
= 6.0 to 10.0 V)
Digital Display of Clock/Receiving Frequency
Package Dimensions
unit : mm
3025B-DIP42S
for Radio Set Applications
[LC7267]
63098HA (II) No.1511 - 1/10
SANYO : DIP42S
LC7267
CMOS IC

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LC7267 Summary of contents

Page 1

... V. DD SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN Digital Display of Clock/Receiving Frequency for Radio Set Applications Package Dimensions unit : mm 3025B-DIP42S = 6 CMOS IC LC7267 [LC7267] SANYO : DIP42S 63098HA (II) No.1511 - 1/10 ...

Page 2

... Input amplitude Iseg 1 Segment current Iseg 2 Iseg 3 Electrical Characteristics at V Parameter Symbol Input high-level current Input low-level current Input floating voltage LC7267 = Conditions max OUT 2 Output pins other than X OUT Ta % 65° 4 b& 4 Other outputs V = 4 b& 6 Other outputs ...

Page 3

... Frequency (FM) 00.00 MHz to 199.95 MHz (The highest-order digit ‘‘0’’ is blanked out.) . Clock (12-hour) PM 12: 11:59 . Clock (24-hour) 0:00 to 23:59 (The highest-order digit ‘‘0’’ is blanked out.) Pin Description . PM, b&e: LED driver pin LC7267 Conditions 4 b& 4 Other outputs seg ...

Page 4

... 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 . 12H/24H: 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 LC7267 Input amplifier +10 ...

Page 5

... PM sign Hours-minutes setting: Setting to PM 11:45 from PM 11:23 PM sign Flashing rate LC7267 24-hour system Flashing (2Hz) for setting by Flashing stop the time signal Hours-minutes Mode of setting by setting mode the time signal Minutes 1 ...

Page 6

... Equivalent Circuit Block Diagram LC7267 No. 1511- 6/10 ...

Page 7

... Sample Application Circuit 1 5-digit display in FM use LC7267 No. 1511- 7/10 ...

Page 8

... Sample Application Circuit 2 4-digit display in FM use (Note) How to reduce current dissipation when display is turned off To reduce current dissipation when display is turned off (INHI: ‘‘L’’), the circuit shown below must be connected to the FMI pin. LC7267 No. 1511- 8/10 ...

Page 9

... V or more DD FMI input frequency, f – – Supply voltage, V – LC7267 I DD 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 = V DD AIF1, AIF2 = V ...

Page 10

... 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. LC7267 OL Segment ...

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