The SGM823 is a complete microprocessor supervisory device which combines reset, watchdog and manual reset functions in a SOT-23-5 package. System reliability is significantly improved by such integration compared to the designs with individual ICs or discrete components. The SGM823 also features an excellent transient immunity to ignore fast VCC transients.
This device has an active-low push-pull reset output (nRESET) that is activated by a logic low on the manual reset input (nMR), a watchdog expiry event or due to a low VCC voltage. The nRESET output can still be in the correct logic state even if VCC is 1V. The SGM823 is offered in four fixed VCC reset threshold voltages.
The SGM823 is available in a Green SOT-23-5 package. It operates over a junction temperature range of -40℃ to +125℃.
Ultra-Low Supply Current: < 1μA (TYP)
Precision Supply-Voltage Monitor
4.63V for SGM823-L
3.08V for SGM823-T
2.93V for SGM823-S
2.63V for SGM823-R
Guaranteed nRESET Valid at VCC = 1V
Push-Pull nRESET Output
Reset Pulse Width: 200ms (TYP)
Debounced TTL/CMOS-Compatible
Manual Reset Input
Watchdog Timer with 1.6s (TYP) Timeout
Fully Specified over Temperature
Power-Supply Transient Immunity
Without External Components
-40℃ to +125℃ Operating Temperature Range
Available in a Green SOT-23-5 Package
Computers
Portable Equipment
Automotive Equipment
Intelligent Instruments
Critical μP Power Monitoring
