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U6809B Datasheet(PDF) 4 Page - ATMEL Corporation

Part # U6809B
Description  FAIL-SAFE IC WITH RELAY DRIVER AND LAMP DRIVER
PDF  16 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

U6809B Datasheet(HTML) 4 Page - ATMEL Corporation

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U6809B
4764A–AUTO–10/03
Detailed Block Diagram with External Components
Figure 3. Detailed Block Diagram
+
-
V
Ref 4
+
-
V
Ref 5
+
-
+
-
+
-
Oscillator
Watchdog
+
-
V
Ref 1
Failure
detection
lamp 1
+
-
+
-
+
-
+
-
V
Ref2
V
Ref3
19
14
GND
15
13
VS
RELI
OSC
+ PRES
Temperature
shut down
A
C
Ground backup
AUX GND
GND
Integrated
oscillator
Internal
timing
Short-circuit
protection
D
B
D
C
V
S
V
Batt
V
Batt
Push pull
R-
Push pull
R+
Reset
delay
Push pull
L1
Failure
detection
lamp 2
Push pull
L2
A
D
V
S
VS
B
C
E
V
Ref2
E
E
Reset
debouncing
1
2
3
20
11
LA1I
LA2I
WDI
18
7
4
8
9
10
12
- NRES
RELO
V
Batt
FBLA1
LA1O
LA2O
FBLA2
ENO
56
16 17
AUX GND
V
Ref3



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