STM6778TWWB6F STMicroelectronics

STM6717/6718/6719/6720 STM6777/6778/6779/6780 Dual/triple ultra-low voltage supervisors with push-button reset (with delay option) Features Primary supply (V ) monitor. CC1 Fixed (factory-programmed) reset thresholds: 4.63 V to 1.58 V Secondary supply (V ) monitor CC2 (STM6717/18/19/20/77/78) Fixed (factory-programmed) reset thresholds: 3.08 V to 0.79 V Tertiary supply monitor (using externally SOT23-5 (WY) adjustable RSTIN): 0.626 V internal reference RST outputs (push-pull or open drain) state guaranteed if V or V 0.8 V CC1 CC2 Reset delay time (t ) on power-up: 13.2 ms, rec 210 ms, 900 ms (typ) Manual reset input (MR) Optional delayed manual reset input (MRC) with external capacitor (STM6777/78/79/80) SOT23-6 (WB) Low supply current - 11 A (typ), V = V = 3.6 V CC1 CC2 Operating temperature: 40 C to 85 C (industrial grade) Table 1. Device summary Monitored voltages Reset output (RST) Part Manual reset Delayed MR Package Active-low Active-low number input (MR) pin (MRC) V V RSTIN CC1 CC2 (push-pull) (open drain) STM6717 WY STM6718 WY STM6719 WB STM6720 WB STM6777 WB STM6778 WB STM6779 WB STM6780 WB August 2011 Doc ID 11469 Rev 8 1/30 www.st.com 1Contents STM6717/6718/6719/6720/STM6777/6778/6779/6780 Contents 1 Description . 5 1.1 Pin descriptions . 7 1.1.1 Active-low, push-pull reset output (RST) - STM6718/20/78/80 7 1.1.2 Active-low, open drain reset output (RST) - STM6717/19/77/79 . 7 1.1.3 Push-button reset input (MR) 7 1.1.4 Manual reset delay input (MRC) - STM6777/78/79/80) 8 1.1.5 Primary supply voltage monitoring input (V ) . 8 CC1 1.1.6 Secondary supply voltage monitoring input (V ) . 8 CC2 1.1.7 Adjustable reset comparator input (RSTIN STM6719/20/79/80) 8 2 Operation . 10 2.1 Applications information 10 3 Typical operating characteristics . 11 4 Maximum rating 17 5 DC and AC parameters 18 6 Package mechanical data 22 7 Part numbering 26 8 Revision history . 29 2/30 Doc ID 11469 Rev 8