MAX30102 High-Sensitivity Pulse Oximeter and Heart-Rate Sensor for Wearable Health Electrical Characteristics (continued) (VDD = 1.8V, VLED+ = 5.0V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C) (Note 1) PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSI2C TIMING CHARACTERISTICS (SDA, SDA, INT) (Note 3) I2C Write Address AE Hex I2C Read Address AF Hex Serial Clock Frequency fSCL 0 400 kHz Bus Free Time Between STOP and START Conditions tBUF 1.3 µs Hold Time (Repeated) START Condition tHD;STA 0.6 µs SCL Pulse-Width Low tLOW 1.3 µs SCL Pulse-Width High tHIGH 0.6 µs Setup Time for a Repeated START Condition tSU;STA 0.6 µs Data Hold Time tHD;DAT 0 900 ns Data Setup Time tSU;DAT 100 ns Setup Time for STOP Condition tSU;STO 0.6 µs Pulse Width of Suppressed Spike tSP 0 50 ns Bus Capacitance CB 400 pF SDA and SCL Receiving Rise Time tR 20 + 0.1CB 300 ns SDA and SCL Receiving Fall Time tRF 20 + 0.1CB 300 ns SDA Transmitting Fall Time tTF 300 ns Note 1: All devices are 100% production tested at TA = +25°C. Specifications over temperature limits are guaranteed by Maxim Integrated’s bench or proprietary automated test equipment (ATE) characterization. Note 2: Specifications are guaranteed by Maxim Integrated’s bench characterization and by 100% production test using proprietary ATE setup and conditions. Note 3: Guaranteed by design and characterization. Not tested in final production. SDA t t SU,DAT tSU,STA BUF t t LOW HD,STA t t SP HD,DAT tSU,STO t SCL HIGH tHD,STA tR tF START CONDITION REPEATED START CONDITION STOP START CONDITION CONDITION Figure 1. I2C-Compatible Interface Timing Diagram www.maximintegrated.com Maxim Integrated │ 5
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