AME8510 Datasheet, PDF (8/13 Pages) Analog Microelectronics – Micropower uP Watch Dog Timer

AME, Inc.
AME8510 / 8520 / 8530
Micropower µP Watch Dog Timer
n Electrical Specifications
TA = 25^OC unless otherwise noted
Parameter
V_DD Range
Supply Current
Symbol
V_RANGE
I_DD
Test Condition
WDI and MRB unconnected
Reset Threshold*
V_TH
ResetB Output Voltage
Hgh
V_OH
Reset Output Voltage Hgh
ResetB Output Voltage
Low
V_OL
Reset Output Voltage Low
V_DD>V_TH max
V_DD<V_TH min
V_DD<V_TH min
V_DD>V_TH max
I_SOURCE=0.5mA,
TA= -40~85^oC
I_SNK=1.2mA,
TA= -40~85^oC
Min Typ Max Units
1
5.5
V
3 10.0 _µA
V_TH
-1.5%
V_TH
V
+1.5%
0.8V_DD
V
0.5
V
V_DD to Reset Delay
Reset Timeout Period*
Watch Dog Timeout
Period*
WDI Pulse Width
T_D1
T_D2
T_WD
T_WDI
V_DD = V_TH - 100mV
TA= -40~85^oC
Version F
Version E
40
µ^S
140 210 280 mS
1120 1760 2400 mS
50
nS
WDI Input Threshold
WDI Input Current
WDI_IL
WDI_IH
I_IL
I_IH
V_DD = V_TH x 1.2
WDI = 0V
WDI = V_DD = 5.0V
0.7
V
0.8
V
V_DD
-15 -8
µ^A
8 15
MRB Input Threshold
MRB_IL
MRB_IH
V_DD = V_TH x 1.2
MRB Pulse Width
MRB Noise Immunity
(pulse width with no reset)
T_WMRB
MRB to Reset Delay
MRB Pull Up Resistance
T_DMRB
* See the chart on page 3 for available values of this parameter.
0.7
V
0.8
V_DD
1
µ^S
100
nS
500
nS
80
120 K ohm
8