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Renesas Electronics Components Datasheet

ICM7216D Datasheet

Frequency Counters/Timers

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ICM7216B, ICM7216D
OBSOLETE PRODUCT
NO RECOMMENDED REPLACEMENT
contact our Technical Support Center at
www.intersil.com/tsc
8-Digit, Multi-Function, Frequency Counters/Timers
DATASHEET
FN3166
Rev.4.00
Jan 7, 2004
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 0.1s 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 s. 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 0.5s 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
FN3166 Rev.4.00
Jan 7, 2004
Page 1 of 18


Renesas Electronics Components Datasheet

ICM7216D Datasheet

Frequency Counters/Timers

No Preview Available !

ICM7216B, ICM7216D
Pinouts
ICM7216B (PDIP)
COMMON CATHODE
TOP VIEW
CONTROL INPUT 1
INPUT B 2
FUNCTION INPUT 3
DIGIT 1 OUTPUT 4
DIGIT 3 OUTPUT 5
DIGIT 2 OUTPUT 6
DIGIT 4 OUTPUT 7
VSS 8
DIGIT 5 OUTPUT 9
DIGIT 6 OUTPUT 10
DIGIT 7 OUTPUT 11
DIGIT 8 OUTPUT 12
RESET INPUT 13
RANGE INPUT 14
28 INPUT A
27 HOLD INPUT
26 OSC OUTPUT
25 OSC INPUT
24 EXT OSC INPUT
23 DECIMAL POINT OUTPUT
22 SEG g OUTPUT
21 SEG e OUTPUT
20 SEG a OUTPUT
19 SEG d OUTPUT
18 VDD
17 SEG b OUTPUT
16 SEG c OUTPUT
15 SEG f OUTPUT
ICM7216D (PDIP)
COMMON CATHODE
TOP VIEW
CONTROL INPUT 1
MEASUREMENT IN PROGRESS 2
DIGIT 1 OUTPUT 3
DIGIT 3 OUTPUT 4
DIGIT 2 OUTPUT 5
DIGIT 4 OUTPUT 6
VSS 7
DIGIT 5 OUTPUT 8
DIGIT 6 OUTPUT 9
DIGIT 7 OUTPUT 10
DIGIT 8 OUTPUT 11
RESET INPUT 12
EX. DECIMAL POINT INPUT 13
RANGE INPUT 14
28 INPUT A
27 HOLD INPUT
26 OSC OUTPUT
25 OSC INPUT
24 EXT OSC INPUT
23 DECIMAL POINT OUTPUT
22 SEG g OUTPUT
21 SEG e OUTPUT
20 SEG a OUTPUT
19 SEG d OUTPUT
18 VDD
17 SEG b OUTPUT
16 SEG c OUTPUT
15 SEG f OUTPUT
FN3166 Rev.4.00
Jan 7, 2004
Page 2 of 18


Part Number ICM7216D
Description Frequency Counters/Timers
Maker Renesas
Total Page 18 Pages
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