CHIBA, Japan--(BUSINESS WIRE)--Seiko Instruments Inc. (SII) announced the release of the new S-19400/19401 series watchdog timer with reset function featuring selectable window or timeout modes; industry leading low current consumption of 3.8µA; and high temperature operation up to 125°C.
Modern automobiles incorporate from 50 to 100 microcontrollers including
many that have to be continuously monitored for vehicle safety or
performance reasons.
The new SII watchdog timers are optimized for
use in automotive microcontroller monitoring and automotive ECUs that
require precise fault detection. They monitor periodic signals from
microcontrollers and signal any abnormal operation.
Pin-selectable for window or timeout modes
The S-19400
provides enhanced design flexibility since it can be pin selected to
operate in either window or timeout modes. In “timeout mode” the timer
signals a fault condition when the microcontroller inputs are too slow
or ‘timeout’. In “window mode” the timer signals a fault condition when
the microcontroller inputs are either too slow or too fast, improving
overall reliability and safety. The S-19401 supports the window mode
only, and has a reset output pin for detecting a low voltage.
The industry leading low current consumption
The
S-19400/19401 series delivers industry leading low current consumption
of only 3.8µA contributing to lower current consumption in
microcontroller monitoring systems that require always-on operation.
Automotive quality
The S-19400/19401 series can be used in
the demanding automotive environment due to its wide operating
temperature range of -40 to +125°C as well as screening performed with a
triple-temperature test (low, normal, high temperatures).
AEC-Q100(Automotive Electronics Council reliability stress test) is
currently in process.
Specification
The detection voltage is selectable from 2.0V
to 5.0V in 0.1V steps which has accuracy of ±2.0% and hysteresis width
of 5% typ. The input voltage range is 0.9V to 6.0V. The package is the
lead-free and halogen-free TMSOP-8.
Detailed information:
http://datasheet.sii-ic.com/en/automotive_watchdog_timer/S19400_19401_E.pdf
Please visit:
English: http://www.sii-ic.com/en/
About Seiko Instruments Inc. (SII)
Major subsidiary of Seiko
Holdings Corporation (TOKYO:8050). Develops, manufactures and sells
watches, semiconductors, crystal oscillators, micro batteries, inkjet
printheads, hard disk components, thermal printers, factory automation
systems, color printers, musical instrument accessories, etc.
http://www.sii.co.jp/en/
