E520.35B62AC ELMOS Semiconductor, E520.35B62AC Datasheet - Page 24

• Manufacturer Part Number: E520.35B62AC
• Description: LIN Transceivers LIN SBC with VR & Watchdog
• Manufacturer: ELMOS Semiconductor

Specifications of E520.35B62AC

• Rohs: yes
• Operating Supply Voltage: 5 V
• Supply Current: 10 mA
• Maximum Operating Temperature: + 125 C
• Package / Case: QFN-20
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT

E520.35
LIN SBC with Voltage Regulator and Watchdog
ADVANCE PRODUCT INFORMATION JUL 26, 2011
6.5
Watchdog
The watchdog has to be triggered by high pulses at WDIN in the open window time t
. A correct
WD,OW
WD-trigger command in an open window starts the next closed window. Any WD-trigger command in
the closed window resets the watchdog and a reset will be activated on pin RES_N for t
. The
WD,RES
watchdog oscillator clock has a clock period of t
.
WD,OSCXX
There is an enlarged first open window after a high transition at RES_N. The first WDIN trigger pulse is
allowed to appear latest at t
.
WD,FOW
The watchog is disabled in standby- and sleep mode. The watchdog starts with first open window after
reentering active- or power-on mode.
Fig. 10: Watchdowg triggger in closed window (CW)
Fig. 11: No watchdowg trigger in first open window (FOW)
ELMOS Semiconductor AG
Data Sheet 24 / 29
QM-No.: 25DS0060E.00