ICM7226 Intersil Corporation, ICM7226 Datasheet - Page 5

• Manufacturer Part Number: ICM7226
• Description: 8-Digit Multi-Function Frequency Counter/Timer
• Manufacturer: Intersil Corporation

Electrical Specifications
NOTES:
Timing Waveform
NOTE:
Multiplex Inputs: Pins 1, 4, 20, 21
Digit Driver: Pins 22-24, 26-30
ICM7226B
Segment Driver: Pins 22-24, 26-30
Multiplex Inputs: Pins 1, 4, 20, 21
Digit Driver: Pins 8-11, 13-16
MEASUREMENT
1. Assumes all leads soldered or welded to PC board and free air flow.
2. Typical values are not tested.
1. If range is set to 1 event, first and last measured interval will coincide.
IN PROGRESS
FIGURE 1. WAVEFORMS FOR TIME INTERVAL MEASUREMENT (OTHERS ARE SIMILAR, BUT WITHOUT PRIMING PHASE)
Input Low Voltage, V
Input High Voltage, V
Input Resistance to V
Low Output Current, I
High Output Current, I
Leakage Current, I
High Output Current, I
Input Low Voltage, V
Input High Voltage, V
Input Resistance to V
Low Output Current, I
High Output Current, I
INPUT A
INPUT B
STORE
RESET
30ms TO 40ms
PARAMETER
L
IL
IL
IH
IH
SS
SS
OL
OL
OH
OH
OH
, R
, R
190ms TO 200ms
IN
IN
UPDATE
V
DD
40ms
= 5.0V, T
60ms
40ms
A
= 25
ICM7226A, ICM7226B
o
C, Unless Otherwise Specified (Continued)
V
V
V
V
V
V
V
V
PRIMING EDGES
PRIMING
IN
O
O
O
O
IN
O
O
= +1.0V
= V
= V
= V
= +1.0V
= V
= +1.0V
= V
DD
SS
DD
DD
DD
9-19
FUNCTION:
TIME INTERVAL
TEST CONDITIONS
-2.0V
-2.0V
-2.5V
-1.0V
MEASUREMENT INTERVAL
MEASURED
250ns MIN
INTERVAL
(FIRST)
V
DD
MIN
150
100
2.0
50
10
50
-
-
-
-
-
-0.8
TYP
100
-0.3
180
360
100
15
75
-
-
-
-
-
MEASURED
INTERVAL
V
(LAST)
DD
MAX
0.8
10
-
-
-
-
-
-
-
-
-
-2.0
UPDATE
UNITS
mA
mA
mA
mA
k
k
V
V
V
V
A
A