Microprocessor Supervisory Circuit with Watchdog Timer and Manual Reset for Automotive Applications.
SGM817SQ
SGM817SQ.pdf
SGM817SQ.pdf
No.14091
FEATURES
• AEC-Q100 Qualified for Automotive Applications
Device Temperature Grade 1
TA = -40℃ to +125℃
• Ultra-Low Supply Current: 0.64μA (TYP)
• Precision Supply-Voltage Monitor
4.66V for SGM817-LQ
3.10V for SGM817-TQ
2.95V for SGM817-SQ
2.64V for SGM817-RQ
• Guaranteed nRESET Valid at VCC = 1V
• Push-Pull nRESET Output
• Reset Pulse Width: 25ms (TYP)
• Debounced TTL/CMOS-Compatible
• Manual Reset Input
• Watchdog Timer with 200ms (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
DESCRIPTION
The SGM817xQ 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 SGM817xQ 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 SGM817xQ is offered in four fixed VCC reset threshold voltages.
The device is AEC-Q100 qualified (Automotive Electronics Council (AEC) standard Q100 Grade 1) and it is suitable for automotive applications.
The SGM817xQ is available in a Green SOT-23-5 package. It operates over an ambient temperature range of -40℃ to +125℃.
APPLICATION CIRCUIT
PIN CONFIGUTION
