REAL TIME CLOCK MODULE
For Automotive, Wide operating temperature range, High stability
RA4000CE

The RA4000CE is a real-time clock 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 conforms to AEC-Q100 standard with low-power operation, thus it is suitable for on-vehicle use.

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. VDD low.
  • Conforms to AEC-Q100
  • Links to convenient tools
    Click here
  • Links to Video contents
    Click here

Complies with EU RoHS directive.

Complies with EU RoHS directive.

Automotive

RA4000CE
RA4000CE

Block diagram

Block diagram

Specifications (characteristics)

Refer to application manual for details

name

Product name and number

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name

Pin function

Terminal connection External dimensions

Terminal connection/External dimensions

Terminal connection External dimensions

(Unit: mm)

Terminal connection External dimensions

Footprint (Recommended)

footprint

(Unit: mm)

To maintain stable operation, provide a 0.1uF by-pass capacitor
at a location as near as possible to the power source terminal of the crystal product (between Vcc - GND)

Video contents: Feature of RA8000CE / RA4000CE

Video contents: RA4000CE use case

White paper: Benefits of RTC Module in an Automotive Battery Management System

White paper: kHz-band DTCXO timekeeping accuracy in a temperature changing environment

White paper: RTC sub second functions and applications

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