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參數(shù)資料
| 型號： | LS7220 |
| 廠商： | LSI Corporation |
| 英文描述： | DIGITAL LOCK FOR AUTOMOTIVE IGNITIONS |
| 中文描述： | 數(shù)字鎖定汽車點火 |
| 文件頁數(shù)： | 3/4頁 |
| 文件大?。?/td> | 63K |
| 代理商： | LS7220 |
SENSE Input
I
1
I
2
LOCK
LOCK STATUS
SAVE Input
SAVE STATUS
LOCK Input
FIGURE 3. LS7220 TIMING DIAGRAM
T
PW
T
PW
T
PW
T
PW
T
CE
T
SE
T
SE
T
SE
T
SE
T
SD
T
SD
I
3
I
4
6
5
4
3
2
13
12
UNSELECTED
KEYS (RESET)
SEQUENTIAL
DETECTOR
INCORRECT
SEQUENCE
CORRECT
SEQUENCE
SEQUENTIAL
MEMORY
Q
POWER
ON
RESET
SAVE
MEMORY
LOGIC "1"
LEVEL
RESTORE
LOCK
LOCK STATUS
8
10
SAVE STATUS
CONVENIENCE DELAY
-
+
V
SS
C
SELECTED KEYS (IN SEQUENCE)
I
1
I
2
I
3
I
4
1
14
9
V
SS
V
DD
(+V)
(-V)
V
SS
V
SS
V
SS
V
SS
V
DD
11
7
R
S
Q
R
S
Q
SAVE
INPUT
LOCK
INPUT
Capacitor
Discharge
Current
FIGURE 4. LS7220 BLOCK DIAGRAM
SENSE
INPUT
(ENABLE)
R
External Capacitor
FIGURE 2. CONVENIENCE DELAY TIME vs POWER SUPPLY
(with External Capacitor C, Pin 12)
T
S
,
Typical Curve for C = 5μF
T
A
= 25
°
C
(V
SS-
V
DD
), Volts
5
10
15
18
8
4
6
2
14
0
12
10
7220-012703-3
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LS7222 | 制造商:LSI 制造商全稱:LSI 功能描述:KEYPAD PROGRAMMABLE DIGITAL LOCK |
| LS7223 | 制造商:LSI 制造商全稱:LSI 功能描述:KEYPAD PROGRAMMABLE DIGITAL LOCK |
| LS7225 | 制造商:LSI 制造商全稱:LSI 功能描述:DIGITAL LOCK CIRCUIT with Tamper Output |
| LS7226 | 制造商:LSI 制造商全稱:LSI 功能描述:DIGITAL LOCK CIRCUIT with Tamper Output |
| LS7228 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Address Decoder |
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