NTE1537中文资料Integrated Circuit CMOS, Digital Frequency Indicator w/Clock LED Function数据手册NTE规格书

描述 Description

Applications:
Car Radio Applications: FM/AM Receiving Frequency Display and Clock Display Home Radio Applications: FM/AM Receiving Frequency Display and Clock Display Car Clock Applications: Hours–Minutes, Month–Date/Stopwatch DisplayFunctions:
FM Receiving Frequency Display (4 Digits)
AM Receiving Frequency Display (4 Digits)
Month–Date or Stopwatch Display (Either of these Selectable)Features:
Single–Chip CMOS LSI for Static Display System
Capable of Direct Driving Green LED (Drive Capacity 15mA)
Capable of Selecting Frequency Display/Time Display
Use FM/AM Local Oscillation Signal of Varactor Diode, Variable Capacitor, or µ Tuning System to Digitally Display FM/AM Receiving Frequency
Covers 4 AM Intermediate Frequencies: +262.5, +452.5, +455, +470kHz
Covers 2 FM Intermediate Frequencies: +10.7, –10.7MHz
Capable of Fine–Adjusting AM/FM Display Frequency Error Independently
       
• A variable Resistor can be used to Correct AM IF Error within ±2.8kHz
       
• A variable Resistor can be used to Correct FM IF Error within ±140kHz
Two Selections of Display System (12–Hour System with PM Sign which is Displayed During Setting Only, 24–Hour System)
Programmed on Long Months (31 Days)/Short Months (30 Days). Date in February is Programmed to Count up to the 29th
Easy to Set Time by th Time Signal
Stopwatch Capable of Counting/Displaying 1 Second to 12 Hours, 59 Minutes, 59 Seconds
Inhibit Pin for Inhibiting Time Setting with Display Unlighted
4MHz Crystal for Reference Frequency