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A look inside the DS3231 real-time clock

Posted on Thursday, August 10th, 2017 in Chips, reversed by DP

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Pete posted an article taking a closer look at Maxim’s DS3231 real-time clock:

Fortunately, Maxim also offers the DS3231, which is advertised as an “Extremely Accurate I2C-Integrated RTC/TCXO/Crystal”. This chip has the 32kHz crystal integrated into the package itself and uses a built-in temperature sensor to periodically measure the temperature of the crystal and, by switching different internal capacitors in and out of the crystal circuit, can precisely adjust its frequency so it remains constant. It’s specified to keep time within 2ppm from 0°C to +40°C, and 3.5ppm from -40°C to +85°C, which means the clock would only drift 63 and 110 seconds per year, respectively. Very cool.

See the full post at HeyPete.com blog.

This entry was posted on Thursday, August 10th, 2017 at 11:27 pm and is filed under Chips, reversed. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

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