AAT3510_06 Datasheet, PDF (5/11 Pages) Advanced Analogic Technologies – Micropower μP Reset with Watchdog Timer

AAT3510/1/2/3/4/5/6/7/8/9
Micropower µP Reset with Watchdog Timer
Electrical Characteristics
V_CC = 2.5V to 5.5V, T_A = -40°C to +85ºC¹, unless otherwise noted. Typical values are at T_A = 25°C.
Symbol Description
Conditions
Min
Open-Drain RESET Output (AAT3517, 3518, 3519)
V_CC ≥ 1.0V, I_SINK = 50µA
V_OL
RESET Low Output Voltage
V_CC ≥ 1.2V, I_SINK = 100µA
V_CC ≥ 2.7V, I_SINK = 1.2mA
V_CC ≥ 4.5V, I_SINK = 3.2mA
I_D(OFF) Reset Leakage Current
Watchdog Input (AAT3510, 3511, 3512, 3513, 3514, 3517, 3518)
AAT351xIGV-xx-x-A-T1
t_WD
Watchdog Timeout Period
AAT351xIGV-xx-x-B-T1
AAT351xIGV-xx-x-C-T1²
t_WDI
WDI Minimum Pulse Width
V_IL = 0.3 x V_CC, V_IH = 0.7 x V_CC
V_IL
WDI Input Threshold³
V_IH
WDI Input Threshold³
I_WDI
WDI Input Current⁴
WDI = V_CC, Time Average
V_WDI = 0, Time Average
Manual RESET Input (AAT3510, 3511, 3512, 3515, 3516, 3517, 3519)
V_IL
MR Input Threshold
MR Input Threshold
MR Input Pulse Width
V_IH
MR Glitch Rejection
MR Internal Pull-Up Resistance T_A = 25°C
MR to Reset Delay
V_CC = 5V
4.3
71
1.12
0.3 x V_CC
-20
0.3 x V_CC
1
35
Typ Max Units
0.3
0.3
0.3
V
0.4
1.0
µA
6.3
9.3
102 153
ms
1.6
2.4
s
50
ns
0.8 x V_CC V
120 160
µA
-15
V
0.7 x V_CC
µs
100
ns
52
75
kΩ
230
ns
1. Over-temperature limits are guaranteed by design, not production tested.
2. Watchdog timeout period C is not available on AAT3513, AAT3514, and AAT3518.
3. WDI is internally serviced within the watchdog period if WDI is left unconnected.
4. The WDI input current is specified as the average input current when the WDI input is driven high or low. The WDI input is designed
for a three-stated-output device with a 10µA maximum leakage current and capable of driving a maximum capacitive load of 200pF.
The three-state device must be able to source and sink at least 200µA when active.
3510.2006.03.1.7
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