AAT3510 Datasheet, PDF (5/12 Pages) Advanced Analogic Technologies – Micropower uP Reset with Watchdog Timer

AAT3510/1/2/3/4/5/6/7/8/9
Micropower µP Reset with Watchdog Timer
Symbol Description
Conditions
Min Typ Max Units
Manual RESET Input (AAT3510, 3511, 3512, 3515, 3516, 3517, 3519)
V_IL
MR Input Threshold
V_IH
MR Input Threshold
MR Input Pulse Width
MR Glitch Rejection
MR Internal Pullup Resistance
MR to Reset Delay
T_A = 25°C
V_CC = 5V
0.3 x V_CC
1
35
0.7 x V_CC ^V
µs
100
ns
52
75
kΩ
230
ns
Note 1: Over-temperature limits are guaranteed by design, not production tested.
Note 2: This is the minimum time RESET must be held low by an external pulldown source to set the active pullup flip-flop.
Note 3: Measured from RESET V_OL to (0.8 x V_CC), Open Circuit Output.
Note 4: Watchdog timeout period C is not available on AAT3513, AAT3514, and AAT3518.
Note 5: WDI is internally serviced within the watchdog period if WDI is left unconnected.
Note 6: 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.
3510.2004.08.1.4
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