GENERAL DEscriptION
The SGM823 is an integrated microprocessor supervisory device with watchdog and manual reset functions. Compared with the design using a single IC or discrete components, this integration design has the advantage of improving system stability and accuracy. The special design on SGM823 can ignore the fast transients on VCC.
The SGM823 has four fixed reset threshold voltages of 4.63V, 3.08V, 2.93V and 2.63V. When VCC is as low as 1V, the reset output can still operate. And it also has a low-level active manual reset nMR function.
The SGM823 is available in a Green SOT-23-5 package. It operates over an ambient temperature range of -40℃ to +125℃.
PIN CONFIGURATIONS
FEATURES
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
APPLICATIONS
Computers
Portable Equipment
Automotive Equipment
Intelligent Instruments
Critical μP Power Monitoring