Recently the boss for a project, to realize the heart rate and blood oxygen measurement using the photoelectric sensor, the I see many products with the Internet is silan SC7R30 chip, then bought some back, but now I found online sufficient information about the chip, including silan has the website there is no corresponding information, contact but they don't respond to technical support, want to ask everyone to have detailed information about the chips, of course, have better applications, chip manual line, also need more detailed information, thank you!