U5020M Datasheet, PDF (8/10 Pages) TEMIC Semiconductors – Digital Window Watchdog Timer

Electrical Characteristics
V_DD = 5 V; T_amb = -40°C to +85°C; reference point is ground (pin14); Figure 4 on page 4, unless otherwise specified
Parameters
Test Conditions
Pin
Symbol Min. Typ. Max. Unit
Supply voltage
Current consumption
Power-on reset
Power-on reset
Power-on reset
Inputs
R₁ = 66 kW
Logic functions
Threshold
Hysteresis
13
13
13
13
13
3 to 8, 11, 12, 16
V_DD
I_DD
V_DD
V_POR
V_hys
4.5
5.5
V
100 µA
1
V
3.8
V
100
mV
Upper threshold (“1”)
Lower threshold (“0”)
Input voltage range
V_IH
4.0
V_IL
V_IN
-0.4
V
1.0
V
V_DD +
0.2
V
Input current
Output Pin 9
Depending on pin
I _IN
-20
20
µA
Maximum output current
Upper output voltage (“1”)
Lower output voltage (“0”)
Output Pin 10
I_OUT = 1 mA
I_OUT = -1 mA
I_OUT
2
V_OH
4.5
V_OL
mA
V
0.5
V
Maximum output current
Lower output voltage (“0”)
Timing
I_OUT = -1 mA
I_OUT
2
V_OL
mA
0.5
V
Debounce period
Trig, Mode
11, 12
3
4 cycle
Debounce period
Wake-up 1-6
3 to 8
96
128 cycle
Maximum trigger pulse period
45
cycle
Power-up reset time
Time-out period
Short disable time
Short enable time
Long disable time
Long enable time
Long disable time
Long enable time
Reset-out time
Input switch = low (0)
Input switch = low (0)
Input switch = high (1)
Input switch = high (1)
t_o
t₁
t₂
t₃
16
t₄
16
t₅
16
t₄
16
t₅
t₆
201
1,112
130
124
71,970
30,002
1,200
400
40
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
cycle
8 U5020M
4755A–AUTO–11/03