STM705, STM706 STM707, STM708, STM813L 5 V supervisor Datasheet - production data 200 ms (typ) t rec Watchdog timer - 1.6 s (typ) 8 Manual reset input (MR) Power-fail comparator (PFI/PFO) 1 Low supply current - 40 A (typ) SO8 (M) Guaranteed RST (RST) assertion down to V = 1.0 V CC Operating temperature: 40 C to 85 C (industrial grade) or 40 C to 125 C (automotive grade for the STM706 only) RoHS compliance Lead-free components are compliant with (1) TSSOP8 3x3 (DS) the RoHS directive 1. Contact local ST sales office for availability. Features 5 V operating voltage Precision V monitor CC STM705/707/813L 4.50 V V 4.75 V RST STM706/708 4.25 V 4.50 V RST RST and RST outputs Table 1. Device summary Watchdog Watchdog Active-low Active-high Manual reset Power-fail (1) (1) (1) input output RST RST input comparator STM705 (2) STM706 STM707 STM708 STM813L 1. Push-pull output 2. Automotive grade (-40 C to 125 C) option for the STM706 only. March 2014 DocID10520 Rev 10 1/33 This is information on a product in full production. www.st.comContents STM705, STM706, STM707, STM708, STM813L Contents 1 Description . 5 2 Pin descriptions 8 2.1 MR . 8 2.2 WDI 8 2.3 WDO 8 2.4 RST 8 2.5 RST 8 2.6 PFI . 8 2.7 PFO 9 3 Operation . 11 3.1 Reset output . 11 3.2 Push-button reset input 11 3.3 Watchdog input (STM705/706/813L) 11 3.4 Watchdog output (STM705/706/813L) . 12 3.5 Power-fail input/output . 12 3.6 Ensuring a valid reset output down to VCC = 0 V 12 3.7 Interfacing to microprocessors with bidirectional reset pins . 13 4 Typical operating characteristics . 14 5 Maximum ratings . 22 6 DC and AC parameters 23 7 Package mechanical data 27 8 Part numbering 30 9 Revision history . 32 2/33 DocID10520 Rev 10