U5021M Datasheet, PDF (8/11 Pages) ATMEL Corporation – DIGITAL WINDOW WATCHDOG TIMER

Absolute Maximum Ratings
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating
only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Parameters
Symbol
Value
Unit
Supply voltage
Output current
Input voltage
Ambient temperature range
Storage temperature range
V_DD
6.5
V
I_OUT
±2
mA
V_IN
-0.4 V to V_DD +0.4 V
V
T_amb
-40 to +125
°C
T_stg
-55 to +150
°C
Thermal Resistance
Parameters
Junction ambient
Symbol
R_thJA
Value
180
Unit
K/W
Electrical Characteristics
V_DD = 5 V; T_amb = -40°C to +85°C; reference point is pin 7, unless otherwise specified
Parameters
Test Conditions
Pin
Symbol Min.
Supply voltage
Current consumption
Power-on reset
R₁ = 66 kΩ
Release reset state with
rising voltage
6
V_DD
4.5
6
I_DD
6
V_POR1
3.9
Get reset state with falling
voltage
6
V_POR2
3.8
Power-on reset hysteresis
Reset level for low V_DD
Inputs
V_DD = 1 V to V_POR1
I_RST = -300 µA
V_{POR_hys}
40
V_RST
1, 2, 3
Logical “high”
Logical “low”
Hysteresis
V_IH
3.4
V_IL
V_{IN_hys}
0.6
Input voltage range
V_IN
-0.3
Input current
Input current
Outputs
Maximum output current
Logical output “low”
Logical output “high”
Leakage current
I_OUT = -1 mA
I_OUT = -1 mA
V_OUT = 5 V
2, 3
I _IN1
5
1
I _IN2
-20
4, 5
I_OUT
-2
4, 5
V_OL
4
V_OH
V_DD -
0.2
5
I_leak
Typ.
Max.
Unit
5.5
V
60
µA
4.5
V
4.4
V
200
mV
0.1
V_DD
V
1.6
V
1.4
V
V_DD +
0.3
V
20
µA
-5
µA
2
mA
0.2
V
V
2
µA
8 U5021M
4756C–AUTO–09/04