U6813B ATMEL Corporation, U6813B Datasheet - Page 13

• Manufacturer Part Number: U6813B
• Description: U6813b Fail-safe Ic With High-side And Relay Driver
• Manufacturer: ATMEL Corporation

4543B–AUTO–10/05
Figure 9-2.
Figure 9-3.
RELO
FETO
P-EN
N-EN
N-RES
P-RES
V
CC
V
V
5 V
0 V
0 V
0 V
5 V
0 V
5 V
0 V
5 V
0 V
5 V
0 V
WDI
RELO
FETO
P-EN
N-EN
Batt
Batt
Watchdog in Too-slow Condition
Overvoltage Condition
V
V
Reset debounce time
0 V
5 V
0 V
5 V
0 V
0 V
5 V
0 V
Batt
Batt
Normal operation
>5.5 V
1st Reset delay
Overvoltage condition
> 120 µs
WDI too slow
2nd Reset delay
3 good WDI pulses
< 120 µs
>5.5 V
Normal operation
Don't care
Don't care
U6813B
14196
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