Real-time clocks are automotive-compliant

Offering low standby current for infotainment and telematics boxes, the PT7C4363BQ and PT7C4563BQ are two real-time clocks from Diodes that are automotive-compliant.

The wide temperature range makes them suitable for automotive applications, including infotainment systems, dashboard displays, and telematics boxes, says Diodes.

The PT7C4363BQ and PT7C4563BQ are qualified to AEC-Q100 Grade 1, covering the temperature range of -40 to +125 degrees C. The PT7C4563BQ has an adjustable timer. They are production part approval process (PPAP) -capable and are manufactured in IATF16949-certified facilities. The operating voltage range is 1.3 to 5.5V and low-backup current is just 400nA at 3.0V.

The devices interface directly to an external 32.768kHz crystal with an equivalent series resistance of up to 100kOhm. In addition to a real-time clock, they can also deliver a square-wave output with a selectable frequency of 1.0, 32, 1024 or 32,768Hz. Accurate time and date data is accessed through the I2C interface. Adjustments for the number of days in the month are automatic, and an alarm function is also included.

The PT7C4363BQ and PT7C4563BQ are available in an SOIC-8 package.

Diodes is a manufacturer and supplier of application specific standard products within the broad discrete, logic, analogue and mixed-signal semiconductor markets. Diodes serves the consumer electronics, computing, communications, industrial, and automotive markets. Its products include diodes, rectifiers, transistors, MOSFETs, protection devices, function-specific arrays, single gate logic, amplifiers and comparators, Hall-effect and temperature sensors, power management devices, including LED drivers, AC/DC converters and controllers, DC/DC switching and linear voltage regulators and voltage references along with special function devices, such as USB power switches, load switches, voltage supervisors, and motor controllers. Diodes also has timing, connectivity, switching, and signal integrity solutions for high-speed signals.

The company’s headquarters and Americas’ sales office are located in Plano, Texas and Milpitas, California, USA. Design, marketing, and engineering centres are located in California, Taiwan, UK and Germany. Wafer fabrication facilities are located in Manchester and Greenock, UK, and Shanghai, China. Diodes has assembly and test facilities located in Shanghai, Jinan, Chengdu, and Yangzhou, China, as well as in Hong Kong, Neuhaus, and Taipei. Additional engineering, sales, warehouse, and logistics offices are located in Taipei, Hong Kong, UK, China, South Korea, Germany and Japan.

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