NTE1537
Integrated Circuit
CMOS, Digital Frequency Indicator
w
/Clock LED Function
Applications:
D
Car Radio Applications:
D
Home Radio Applications:
D
Car Clock Applications:
FM/AM Receiving Frequency Display and Clock Display
FM/AM Receiving Frequency Display and Clock Display
Hours鈥揗inutes, Month鈥揇ate/Stopwatch Display
Functions:
D
FM Receiving Frequency Display (4 Digits)
D
AM Receiving Frequency Display (4 Digits)
D
Month鈥揇ate or Stopwatch Display (Either of these Selectable)
Features:
D
Single鈥揅hip CMOS LSI for Static Display System
D
Capable of Direct Driving Green LED (Drive Capacity 15mA)
D
Capable of Selecting Frequency Display/Time Display
D
Use FM/AM Local Oscillation Signal of Varactor Diode, Variable Capacitor, or
碌
Tuning System
to Digitally Display FM/AM Receiving Frequency
D
Covers 4 AM Intermediate Frequencies: +262.5, +452.5, +455, +470kHz
D
Covers 2 FM Intermediate Frequencies: +10.7, 鈥?0.7MHz
D
Capable of Fine鈥揂djusting AM/FM Display Frequency Error Independently
鈥?/div>
A variable Resistor can be used to Correct AM IF Error within
鹵2.8kHz
鈥?/div>
A variable Resistor can be used to Correct FM IF Error within
鹵140kHz
D
Two Selections of Display System (12鈥揌our System with PM Sign which is Displayed During
Setting Only, 24鈥揌our System)
D
Programmed on Long Months (31 Days)/Short Months (30 Days). Date in February is Pro-
grammed to Count up to the 29
th
D
Easy to Set Time by th Time Signal
D
Stopwatch Capable of Counting/Displaying 1 Second to 12 Hours, 59 Minutes, 59 Seconds
D
Inhibit Pin for Inhibiting Time Setting with Display Unlighted
D
4MHz Crystal for Reference Frequency
1
2
3
4
