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參數(shù)資料
| 型號(hào)： | ICM7226 |
| 廠商： | Intersil Corporation |
| 元件分類： | 通用總線功能 |
| 英文描述： | 8-Digit, Multi-Function, Frequency Counter/Timer |
| 中文描述： | 8位數(shù)字，多功能，頻率計(jì)數(shù)器/計(jì)時(shí)器 |
| 文件頁數(shù)： | 5/19頁 |
| 文件大?。?/td> | 173K |
| 代理商： | ICM7226 |
9-19
Timing Waveform
Multiplex Inputs: Pins 1, 4, 20, 21
Input Low Voltage, V
IL
-
-
0.8
V
Input High Voltage, V
IH
2.0
-
-
V
Input Resistance to V
SS
, R
IN
V
IN
= +1.0V
50
100
-
k
Digit Driver: Pins 22-24, 26-30
Low Output Current, I
OL
V
O
= +1.0V
-
-0.3
-
mA
High Output Current, I
OH
V
O
= V
DD
-2.0V
150
180
-
mA
ICM7226B
Segment Driver: Pins 22-24, 26-30
Leakage Current, I
L
V
O
= V
SS
-
-
10
μ
A
High Output Current, I
OH
V
O
= V
DD
-2.0V
10
15
-
mA
Multiplex Inputs: Pins 1, 4, 20, 21
Input Low Voltage, V
IL
-
-
V
DD
-2.0
V
Input High Voltage, V
IH
V
DD
-0.8
-
-
V
Input Resistance to V
SS
, R
IN
V
IN
= V
DD
-1.0V
100
360
-
k
Digit Driver: Pins 8-11, 13-16
Low Output Current, I
OL
V
O
= +1.0V
50
75
-
mA
High Output Current, I
OH
V
O
= V
DD
-2.5V
-
100
-
μ
A
NOTES:
1. Assumes all leads soldered or welded to PC board and free air flow.
2. Typical values are not tested.
Electrical Specifications
V
DD
= 5.0V, T
A
= 25
o
C, Unless Otherwise Specified
(Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
MEASUREMENT
IN PROGRESS
30ms TO 40ms
STORE
RESET
INPUT A
INPUT B
PRIMING EDGES
PRIMING
FUNCTION:
TIME INTERVAL
UPDATE
190ms TO 200ms
40ms
60ms
40ms
MEASUREMENT INTERVAL
250ns MIN
MEASURED
INTERVAL
(FIRST)
MEASURED
INTERVAL
(LAST)
UPDATE
NOTE:
1. If range is set to 1 event, first and last measured interval will coincide.
FIGURE 1. WAVEFORMS FOR TIME INTERVAL MEASUREMENT (OTHERS ARE SIMILAR, BUT WITHOUT PRIMING PHASE)
ICM7226A, ICM7226B
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