900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




Atmel Electronic Components Datasheet

U5021M Datasheet

DIGITAL WINDOW WATCHDOG TIMER

No Preview Available !

Features
Low Current Consumption: IDD < 100 µA
RC Oscillator
Internal Reset During Power-up and Supply Voltage Drops (POR)
“Short” Trigger Window for Active Mode,
“Long” Trigger Window for Sleep Mode
Cyclical Wake-up of the Microcontroller in Sleep Mode
Trigger Input
Single Wake-up Input
Reset Output
Enable Output
Digital Window
Watchdog Timer
Description
The digital window watchdog timer, U5021M, is a CMOS integrated circuit. In applica-
tions where safety is critical, it is especially important to monitor the microcontroller.
Normal microcontroller operation is indicated by a cyclically transmitted trigger signal,
which is received by a window watchdog timer within a defined time window.
A missing or a wrong trigger signal causes the watchdog timer to reset the microcon-
troller. The IC is tailored for microcontrollers which can work in both full-power and
sleep mode. With an additional voltage monitoring (power-on reset and supply voltage
drop reset), the U5021M offers a complete monitoring solution for microsystems in
automotive and industrial applications.
U5021M
Rev. 4756C–AUTO–09/04


Atmel Electronic Components Datasheet

U5021M Datasheet

DIGITAL WINDOW WATCHDOG TIMER

No Preview Available !

Figure 1. Block Diagram with External Ciruit
R1
VDD OSC 8
C1
Reset 5
RC
Oscillator
C
VDD
10 nF
6
OSC
Micro-
controller
Trigger 2
Mode 3
OSC
Input signal
conditioning
POR
Power-on
reset
Wake-up 1
7
GND
State machine
4 External
switching
Enable circuitry
POR
Test logic
Pin Configuration
Figure 2. Pinning SO8
WAKE-UP 1
TRIG 2
MODE 3
ENA 4
8 OSC
7 GND
6 VDD
5 RESET
2 U5021M
4756C–AUTO–09/04


Part Number U5021M
Description DIGITAL WINDOW WATCHDOG TIMER
Maker ATMEL Corporation
PDF Download

U5021M Datasheet PDF






Similar Datasheet

1 U5021M DIGITAL WINDOW WATCHDOG TIMER
ATMEL Corporation





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z



Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy