The SGM824A is a complete microprocessor supervisory device which combines reset and watchdog 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 SGM824A also features an excellent transient immunity to ignore fast VCC transients.
The device has an active-low reset output (nRESET) that is activated by a watchdog expiry event or due to a low VCC voltage. The nRESET output is guaranteed to be in the correct logic state even if VCC falls down to 1V. The device also has a complementary active-high reset output (RESET). The SGM824A is offered in three fixed VCC reset threshold voltages.
The SGM824A is available in a Green SOT-23-5 package. It operates over an ambient temperature range of -40℃ to +125℃.
Ultra-Low Supply Current: 0.64μA (TYP)
Precision Supply-Voltage Monitor
2.19V for SGM824A-Y
1.67V for SGM824A-W
1.58V for SGM824A-V
Two Reset Output Options
Push-Pull nRESET
Push-Pull RESET
Guaranteed nRESET Valid at VCC = 1V
Fully Specified over Temperature
200ms Reset Pulse Width
Power-Supply Transient Immunity
Watchdog Timer with 1.6s Timeout
Debounced TTL/CMOS-Compatible
No External Components
-40℃ to +125℃ Operating Temperature Range
Available in a Green SOT-23-5 Package
Computers
Controllers
Intelligent Instruments
Automotive Systems
Critical μP Power Monitoring
