V6155 Datasheet, PDF (1/12 Pages) EM Microelectronic - MARIN SA – Extremely Accurate Power Surveillance, Software Monitoring and Sleep Mode Detection

EM MICROELECTRONIC-MARIN SA
V6155
Extremely Accurate Power Surveillance,
Software Monitoring and Sleep Mode Detection
Features
n Can-bus sleep mode detector
n Standby mode, maximum current 50 mA
n Reset output guaranteed for V_DD voltage
down to 1.2 V
n Comparator for voltage monitoring,voltage reference
1.275 V
n ± 1.2% voltage reference accuracy at +25 °C
n ± 2.5% voltage reference accuracy from
−40 to +85 °C (3 to 5.5 V)
n Programmable reset voltage monitoring
n Programmable power-on reset (POR) delay
n Watchdog with programmable time windows
guarantees a minimum time and a maximum time
between software clearing of the watchdog
n Time base accuracy ± 10%
n System enable output offers added security
n TTL / CMOS compatible
n -40 to +85 °C temperature range
n On request extended temperature range,
−40 to +125 °C
n DIP8 and SO8 packages
Description
The V6155 offers a high level of integration by voltage
monitoring and software monitoring in an 8 lead
package. A comparator monitors the voltage applied at
the V_IN input comparing it with an internal 1.275 V
reference. The power-on reset function is initialized after
V_IN reaches 1.275 V and takes the reset output inactive
after T_POR depending of external resistance. The reset
output goes active low when the V_IN voltage is less than
1.275 V. The RES and EN outputs are guaranteed to be
in a correct state for a supply voltage as low as 1.2 V.
The watchdog function monitors software cycle time and
execution. If software clears the watchdog too quickly
(incorrect cycle time) or too slowly (incorrect execution),
it will cause the system to be reset. The system enable
output prevents critical control functions being activated
until software has successfully cleared the watchdog
three times. Such a security could be used to prevent
motor controls being energized on repeated resets of a
faulty system. If the microcontroller does not work that
means no signal on the TCL input the V6155 goes in a
standby mode (CAN-bus sleep detector).
Applications
n Automotive systems
n Cellular telephones
n Security systems
n Battery powered products
n High efficiency linear power supplies
n Industrial electronics
Typical Operating Configuration
V_DD
V6155
R
V_IN
TCL
V_SS
RES
EN
100 nF
GND
Pin Assignment
DIP8 / SO8
Fig. 1
EN
RES
TCL
V_SS
V_IN
V6155
R
V_DD
NC
Fig. 2
1