AAT3510_06 Datasheet, PDF (4/11 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 +85°C¹, unless otherwise noted. Typical values are at T_A = 25°C.
Symbol Description
Conditions
Min Typ Max
Units
V_CC Operating Voltage Range T_A = -40°C to +85°C
1
AAT3510/1/2/3/4/7/8: V_CC = 3.6V
5
I_CC Supply Current
MR & WDI Unconnected V_CC = 5.5V
AAT3515/6/9:
V_CC = 3.6V
6
MR Unconnected
V_CC = 5.5V
V_TH
Reset Threshold Voltage
T_A = 25°C
T_A = -40 to +85°C
V_THNOM-1.5% V_TH
V_THNOM-2.5% V_TH
T_C
Reference Voltage
Temperature Coefficient
-40°C < T_A < +85°C
±40
Reset Active Timeout
t_RP
Period
AAT351xIGV-xx-A-x-T1
AAT351xIGV-xx-B-x-T1
AAT351xIGV-xx-C-x-T1
1
1.4
20
28
140
200
T_RD V_CC to RESET Delay
V_CC Falling at 1mV/µs
40
Push/Pull RESET Output (AAT3510, 3512, 3513, 3514, 3515, 3516, 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
V_OH
RESET High Output Voltage ^{VCC ≥ 2.7V, ISOURCE = 500µA}
V_CC ≥ 4.5V, I_SOURCE = 800µA
RESET Low Output Voltage
V_CC ≥ 2.7V, I_SINK = 1.2mA
V_CC ≥ 4.5V, I_SINK = 3.2mA
V_OH
V_CC ≥ 1.8V, I_SOURCE = 150µA
RESET High Output Voltage V_CC ≥ 2.7V, I_SOURCE = 500µA
V_CC ≥ 4.5V, I_SOURCE = 800µA
Bidirectional RESET Output (AAT3511, 3514, 3516)
0.8 x V_CC
V_CC - 1.5
0.8 x V_CC
0.8 x V_CC
V_CC - 1.5
Transition Flip-Flop Setup
t_S
Time²
400
V_CC = 3.0V, C_L = 120pF
t_R
RESET Output Rise Time^{3 VCC = 5.0V, CL = 200pF}
V_CC = 3.0V, C_L = 250pF
V_CC = 5.0V, C_L = 400pF
Active Pull-Up Enable
Threshold
V_CC = 5.0V
0.4
0.65
V_PTH
RESET Active Pull-Up
Current
V_CC = 5.0V
20
RESET Pull-Up Resistance
4.2
4.7
5.5
15
18
15
18
V_THNOM+1.5%
V_THNOM+2.5%
2
40
280
0.3
0.3
0.3
0.4
0.3
0.4
333
333
666
666
5.2
V
µA
V
ppm/°C
ms
µs
V
V
V
ns
ns
V
mA
kΩ
1. Over-temperature limits are guaranteed by design, not production tested.
2. This is the minimum time RESET must be held low by an external pull-down source to set the active pull-up flip-flop.
3. Measured from RESET V_OL to (0.8 x V_CC), open circuit output.
4
3510.2006.03.1.7