S-35770 COUNTER IC www.ablic.com 2 COUNTER IC WITH 2-WIRE (I C-bus) INTERFACE ABLIC Inc., 2019 Rev.1.0 00 The counter IC allows for counting externally input clocks. The counter of the S-35770 is a 24-bit binary-up counter. The counter data can be read via a 2-wire serial interface. Features External clock signal count function: Countable from 0 to 16,777,215, with output pin for counter loop flag Low current consumption: 0.01 A typ. (V = 3.0 V, Ta = +25C, out of communication (CLKIN pin = 0 V)) DD Wide range of operation voltage: 1.5 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 Various measurement equipment Infrastructure-related meter Amusement equipment Life counter Package TMSOP-8 1 2 COUNTER IC COUNTER IC WITH 2-WIRE (I C-bus) INTERFACE S-35770 Rev.1.0 00 Block Diagram Counter CLKIN LOOP (24-bit) Count register N.C. (24-bit) Free register (24-bit) SDA VDD Serial interface Power-on SCL detection circuit VSS RST Internal reset signal Figure 1 2