S-35710M WAKE-UP TIMER IC PROGRAMMABLE WAKE-UP TIMER IC www.ablic.com WITH BUILT-IN QUARTZ CRYSTAL ABLIC Inc., 2019-2020 Rev.1.1 00 The wake-up timer IC allows for intermittent system operation by periodically waking up the system. The S-35710M compares the timer value and the value written to the internal register, and outputs a wake-up signal (interrupt signal) when the values match each other. The timer of the S-35710M is a 24-bit binary-up counter. The internal register data can be set freely by users via a 2-wire serial interface. Consequently, the time before the occurrence of a wake-up signal (interrupt signal) can be set freely. Since the S-35710M has a built-in quartz crystal, a matching assessment of the IC and the quartz crystal is unnecessary. Moreover, the number of external parts can also be reduced. Features Built-in 32.768 kHz quartz crystal Wake-up function (Alarm interrupt function): Settable on the second time scale from 1 second to 194 days (Approximately half a year) Low current consumption: 0.25 A typ. (V = 3.0 V, Ta = +25C) DD Wide range of operation voltage: 1.8 V to 5.5 V 2 2-wire (I C-bus) CPU interface Operation temperature range: Ta = 40C to +85C Lead-free (Sn 100%), halogen-free Applications IoT communications device Monitoring device Security device Battery system Energy harvesting system Package HSOP-8Q 1 WAKE-UP TIMER IC PROGRAMMABLE WAKE-UP TIMER IC WITH BUILT-IN QUARTZ CRYSTAL S-35710M Rev.1.1 00 Block Diagram Pull-up RST 32.768 kHz Chattering Quartz crystal elimination Oscillation circuit circuit Internal reset signal pin INT ivider, INT controller Timing generator Wake-up time register Comparator Timer (24-bit) Power-on detection VDD Time register circuit Constant SDA voltage circuit Serial interface VSS SCL Figure 1 2 D