RA4000CE (RTC module) for Automotive, Wide operating temperature range, High stability

Mar 07,2024
225 VIEWS

The RA4000CE is a RTC module with integrated 32.768 kHz digital temperature compensated crystal oscillator (DTCXO). It includes various functions such as a second-to-year clock/calendar with a leap-year correction, time alarm, wakeup timer, time update interrupts, clock output, and a time stamp function that can record two times and dates when an external or internal event occurs, and the power supply statuses that have been detected by the self-monitoring function. This product is compliant with AEC-Q100 and low-power operation, thus it is suitable for automotive applications.

Solutions for Improving Time Accuracy and Lowering System Power for Automotive Application

Overview

Built in frequency adjusted
32.768 kHz crystal unit
Wide temperature operation -40°C to +125°C
Interface Type SPI-Bus interface 3 wire, 4 wire
Low backup current 300 nA Typ. / 3 V
Time stamp function 2 time stamps Max.
Time update interruption Hourly, minutely, and secondly
Alarm interruption in Day, date,
hour, minute, second
Auto repeat wakeup timer interruption
Self-monitoring interruption
Crystal oscillation stop.
V_DD low.
AEC-Q100 compliant