U6813B-MFPG3 데이터 시트보기 (PDF) - Atmel Corporation
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U6813B-MFPG3 Datasheet PDF : 15 Pages
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U6813B
Electrical Characteristics (Continued)
VCC = 5 V, Tamb = -40 to +125°C; reference pin is GND or SGND (over- and under-voltage detection);
fintern = 200 kHz +50%/-45%, fWDC = 5 kHz ±10%; fWDI = 50 Hz, bootstrap capacitor CBoot = 47 nF at Pin CAPI
No. Parameters
Test Conditions
Pin
Symbol
Min.
Typ.
Max.
Unit
13 Reset and 3.3 V Control
13.1 Lower reset level
Reference SGND
13.2 Upper reset level
Reference SGND
13.3 Hysteresis
13.4 Reset debounce time
13.5 Reset delay
13.6 Current
14 RC Oscillator WDC
16
V3.3V
2.97
3.13
V
16
V3.3V
3.47
3.63
V
16
VHYST16
15
70
mV
16
tDEB16
120
320
500
ms
16
tDEL16
20
50
80
ms
16
I3.3V
0.5
mA
14.1 Oscillator frequency
15 Watchdog Timing
ROSC = 36 kW
COSC = 6.8 nF
10
fWDC
4.5
5
5.5
kHz
15.1 Power-on-reset
prolongation time
tPOR
34.3
103.1
ms
15.2 Detection time for
RC-oscillator fault
VCR = constant
tRCerror
81.9
246
ms
15.3 Time interval for
over/under-voltage
detection
tD,OUV
0.16
0.64
ms
15.4 Reaction time of reset
output at over/under
voltage
tR,OUV
0.187
0.72
ms
15.5 Nominal frequency for fRC = 100 fWDI
WDI
fWDI
10
65
Hz
15.6 Nominal frequency for fWDI = 1/100 fWDC
WDC
fWDC
1
6.5
kHz
15.7 Minimum pulse
fWDC = 5 kHz
tP,WDI
364
µs
duration for a
guaranteed WDI
input-pulse detection
15.8 Frequency range for a fWDC = 5 kHz
correct WDI signal
fWDI
32.35
56.25
Hz
15.9 Number of incorrect
WDI trigger counts for
locking the outputs
nlock
3
15.10
Number of correct
WDI trigger counts for
releasing the outputs
nrelease
3
15.11 Detection time for a
stucked WDI signal
VWDI = constant
fWDC = 5 kHz
tWDIerror
49
51
ms
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
Note: 1. If VS > 26 V the current has to be limited at 5 mA by an external resistor.
Type*
A
A
A
A
A
C
A
A
A
A
A
D
D
A
D
A
A
A
9
4543A–AUTO–05/02
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