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Intersil Electronic Components Datasheet



ICM7216D

(ICM7216x) 8-Digit / Multi-Function / Frequency Counters/Timers


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ICM7216D pdf
August 1997
ICM7216A, ICM7216B,
ICM7216D
8-Digit, Multi-Function,
Frequency Counters/Timers
Features All Versions
Description
• 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 Multi-
plexed 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 ICM7216A and 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 0.5µs to 10s
The ICM7216A and ICM7216B are 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 ICM7216A and 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 0.1µs
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.
Features ICM7216D
• Decimal Point and Leading Zero Banking May Be
Externally Selected.
Ordering Information
TEMP.
PART NUMBER RANGE (oC)
PACKAGE
ICM7216AlJl
-25 to 85 28 Ld CERDIP
PKG.
NO.
F28.6
All versions of the ICM7216 incorporate leading zero
blanking. Frequency is displayed in kHz. In the ICM7216A
and ICM7216B, time is displayed in µs. The display is
multiplexed at 500Hz with a 12.2% duty cycle for each digit.
The ICM7216A is designed for common anode displays with
typical peak segment currents of 25mA. 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.
ICM7216BlPl
-25 to 85 28 Ld PDIP
E28.6
ICM7216DlPl
-25 to 85 28 Ld PDIP
E28.6
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
9-10
File Number 3166.1



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ICM7216D pdf
Pinouts
ICM7216A, ICM7216B, ICM7216D
ICM7216A
COMMON ANODE
(CERDIP)
TOP VIEW
ICM7216B
COMMON CATHODE
(PDIP)
TOP VIEW
CONTROL INPUT 1
INPUT B 2
FUNCTION INPUT
DECIMAL POINT
OUTPUT
SEG e OUTPUT
3
4
5
SEG g OUTPUT 6
SEG a OUTPUT 7
VSS 8
SEG d OUTPUT 9
SEG b OUTPUT 10
SEG c OUTPUT 11
SEG f 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 DIGIT 1 OUTPUT
22 DIGIT 2 OUTPUT
21 DIGIT 3 OUTPUT
20 DIGIT 4 OUTPUT
19 DIGIT 5 OUTPUT
18 VDD
17 DIGIT 6 OUTPUT
16 DIGIT 7 OUTPUT
15 DIGIT 8 OUTPUT
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
COMMON CATHODE
(PDIP)
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
9-11



Part Number ICM7216D
Description (ICM7216x) 8-Digit / Multi-Function / Frequency Counters/Timers
Maker Intersil Corporation - Intersil Corporation
Total Page 17 Pages
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