S-1410/1411 Series 105C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER www.ablic.com WITH RESET FUNCTION ABLIC Inc., 2015-2020 Rev.2.5 00 The S-1410/1411 Series is a watchdog timer developed using CMOS technology, which can operate with low current consumption of 3.8 A typ. The reset function and the low voltage detection function are available. Features Detection voltage: 2.0 V to 5.0 V, selectable in 0.1 V step Detection voltage accuracy: 1.5% Input voltage: V = 0.9 V to 6.0 V DD Hysteresis width: 5% typ. Current consumption during watchdog timer operation: 3.8 A typ. Reset time-out period: 14.5 ms typ. (C = 2200 pF) POR Watchdog time-out period: 24.6 ms typ. (C = 470 pF) WDT Watchdog operation is switchable: Enable, Disable Watchdog operation voltage range: V = 2.5 V to 6.0 V DD *1 Watchdog mode switching function : Time-out mode, window mode Watchdog input edge is selectable: Rising edge, falling edge, both rising and falling edges Product type is selectable: S-1410 Series (Product with W / T pin (Output: WDO pin)) S-1411 Series (Product without W / T pin (Output: RST pin, WDO pin)) Operation temperature range: Ta = 40C to +105C Lead-free (Sn 100%), halogen-free *1. The S-1411 Series is fixed to the window mode. Application Power supply monitoring and system monitoring in microcontroller mounted apparatus Packages TMSOP-8 HSNT-8(2030) 1 105C OPERATION, 3.8 A CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION S-1410/1411 Series Rev.2.5 00 Block Diagrams 1. S-1410 Series A / B / C Type CWDT VDD Noise WEN filter Noise WDT circuit WDI filter WDO Noise W / T filter Voltage detection circuit Reference voltage circuit VSS CPOR Figure 1 2. S-1410 Series D / E / F Type CWDT VDD Noise WEN filter Noise WDT circuit WDI WDO filter Noise W / T filter Voltage detection circuit Reference voltage circuit VSS CPOR Figure 2 2