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ICM7216DLPL Datasheet(PDF) 1 Page - Intersil Corporation |
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ICM7216DLPL Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 18 page 1 ® FN3166.4 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2004. All Rights Reserved All other trademarks mentioned are the property of their respective owners. ICM7216B, ICM7216D 8-Digit, Multi-Function, Frequency Counters/Timers The ICM7216B is a fully integrated Timer Counters with LED display drivers. They combine a high frequency oscillator, a decade timebase counter, an 8-decade data counter and latches, a 7-segment decoder, digit multiplexers and 8- segment and 8-digit drivers which directly drive large multiplexed LED displays. The counter inputs have a maximum frequency of 10MHz in frequency and unit counter modes and 2MHz in the other modes. Both inputs are digital inputs. In many applications, amplification and level shifting will be required to obtain proper digital signals for these inputs. The ICM7216B can function as a frequency counter, period counter, frequency ratio (fA/fB) counter, time interval counter or as a totalizing counter. The counter uses either a 10MHz or 1MHz quartz crystal timebase. For period and time interval, the 10MHz timebase gives a 0.1 µs resolution. In period average and time interval average, the resolution can be in the nanosecond range. In the frequency mode, the user can select accumulation times of 0.01s, 0.1s, 1s and 10s. With a 10s accumulation time, the frequency can be displayed to a resolution of 0.1Hz in the least significant digit. There is 0.2s between measurements in all ranges. The ICM7216D functions as a frequency counter only, as described above. All versions of the ICM7216 incorporate leading zero blanking. Frequency is displayed in kHz. In the ICM7216B, time is displayed in µs. The display is multiplexed at 500Hz with a 12.2% duty cycle for each digit. The ICM7216B and ICM7216D are designed for common cathode displays with typical peak segment currents of 12mA. In the display off mode, both digit and segment drivers are turned off, enabling the display to be used for other functions. Features, All Versions • Functions as a frequency counter (DC to 10MHz) • Four internal gate times: 0.01s, 0.1s, 1s, 10s in frequency counter mode • Directly drives digits and segments of large multiplexed LED displays (common anode and common cathode versions) • Single nominal 5V supply required • Highly stable oscillator, uses 1MHz or 10MHz crystal • Internally generated decimal points, interdigit blanking, leading zero blanking and overflow indication • Display off mode turns off display and puts chip into low power mode • Hold and reset inputs for additional flexibility Features, ICM7216B • Functions also as a period counter, unit counter, frequency ratio counter or time interval counter • 1 cycle, 10 cycles, 100 cycles, 1000 cycles in period, frequency ratio and time interval modes • Measures period from 0.5 µs to 10s Features, ICM7216D • Decimal point and leading zero banking may be externally selected Part Number Information PART NUMBER TEMP. RANGE (oC) PACKAGE PKG. NO. ICM7216BlPl -25 to 85 28 Ld PDIP E28.6 ICM7216DlPl -25 to 85 28 Ld PDIP E28.6 Data Sheet January 2004 OBSO LETE PROD UCT NO RE COMM ENDE D REP LACE MENT conta ct our Techn ical Su pport Cente r at 1-888- INTER SIL or www.i ntersi l.com/ tsc |
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