STM6780

STM6717/6718/6719/6720 STM6777/6778/6779/6780 Dual/triple ultra-low voltage supervisors with push-button reset (with delay option) Features ■ Primary supply (VCC1) monitor. Fixed (factory-programmed) reset thresholds: 4.63 V to 1.58 V ■ Secondary supply (VCC2) monitor (STM6717/18/19/20/77/78) ■ Fixed (factory-programmed) reset thresholds: 3.08 V to 0.79 V ■ Tertiary supply monitor (using externally adjustable RSTIN): 0.626 V internal reference ■ RST outputs (push-pull or open drain); state guaranteed if VCC1 or VCC2 ≥ 0.8 V ■ Reset delay time (trec) on power-up: 13.2 ms, 210 ms, 900 ms (typ) ■ Manual reset input (MR) ■ Optional delayed manual reset input (MRC) with external capacitor (STM6777/78/79/80) ■ Low supply current - 11 µA (typ), VCC1 = VCC2 = 3.6 V ■ Operating temperature: –40 °C to 85 °C (industrial grade) SOT23-5 (WY) SOT23-6 (WB) Table 1. Device summary Part number Monitored voltages VCC1 VCC2 RSTIN Manual reset Delayed MR input (MR) pin (MRC) Reset output (RST) Active-low Active-low (push-pull) (open drain) Package STM6717 ✔ ✔ ✔ STM6718 ✔ ✔ ✔ STM6719 ✔ ✔ ✔ ✔ STM6720 ✔ ✔ ✔ ✔ STM6777 ✔ ✔ ✔ STM6778 ✔ ✔ ✔ STM6779 ✔ ✔ ✔ STM6780 ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ WY WY ✔ WB WB ✔ WB WB ✔ WB WB August 2011 Doc ID 11469 Rev 8 1/30 www.st.com 1 Contents Contents STM6717/6718/6719/6720/STM6777/6778/6779/6780 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 ...