ICM7226A_01 Datasheet, PDF (5/19 Pages) Intersil Corporation – 8-Digit, Multi-Function, Frequency Counter/Timer

ICM7226A, ICM7226B
Electrical Specifications V_DD = 5.0V, T_A = 25^oC, Unless Otherwise Specified (Continued)
PARAMETER
TEST CONDITIONS
Multiplex Inputs: Pins 1, 4, 20, 21
Input Low Voltage, V_IL
Input High Voltage, V_IH
Input Resistance to V_SS, R_IN
V_IN = +1.0V
Digit Driver: Pins 22-24, 26-30
Low Output Current, I_OL
High Output Current, I_OH
ICM7226B
V_O = +1.0V
V_O = V_DD -2.0V
Segment Driver: Pins 22-24, 26-30
Leakage Current, I_L
V_O = V_SS
High Output Current, I_OH
V_O = V_DD -2.0V
Multiplex Inputs: Pins 1, 4, 20, 21
Input Low Voltage, V_IL
Input High Voltage, V_IH
Input Resistance to V_SS, R_IN
V_IN = V_DD -1.0V
Digit Driver: Pins 8-11, 13-16
Low Output Current, I_OL
V_O = +1.0V
High Output Current, I_OH
V_O = V_DD -2.5V
NOTES:
1. Assumes all leads soldered or welded to PC board and free air flow.
2. Typical values are not tested.
MIN
-
2.0
50
-
150
-
10
-
V_DD-0.8
100
50
-
TYP
-
-
100
-0.3
180
-
15
-
-
360
75
100
MAX UNITS
0.8
V
-
V
-
kΩ
-
mA
-
mA
10
µA
-
mA
V_DD-2.0 V
-
V
-
kΩ
-
mA
-
µA
Timing Waveform
STORE
30ms TO 40ms
RESET
MEASUREMENT
IN PROGRESS
40ms
60ms
40ms
UPDATE
190ms TO 200ms
FUNCTION:
TIME INTERVAL
PRIMING
MEASUREMENT INTERVAL
UPDATE
INPUT A
PRIMING EDGES
INPUT B
NOTE:
1. If range is set to 1 event, first and last measured interval will coincide.
250ns MIN
MEASURED
INTERVAL
(FIRST)
MEASURED
INTERVAL
(LAST)
FIGURE 1. WAVEFORMS FOR TIME INTERVAL MEASUREMENT (OTHERS ARE SIMILAR, BUT WITHOUT PRIMING PHASE)
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