RA-4565SA (For Automotive Serial Interface Real Time Clock Module)

RA-4565SARA-4565SA

Complies with EU RoHS directive. automotive
  • Built in frequency adjusted 32.768 kHz crystal unit.
  • Interface Type
    4-wire serial interface
  • Wide operating voltage range
    1.6V to 5.5V
  • Wide voltage for long time keeping
    1.5V to 5.5V
    Ta=-40°C to +125°C
  • Extended operating temperature range
    -40°C to +125°C
  • 32.768 kHz frequency output function
    Open drain output with Control Pin
  • 32.768 kHz Clock/calendar function, auto leap year correction function, alarm interrupt function, etc.
  • Conforms to AEC-Q200

Block diagram

Block diagram

Overview

  • Wide operating temperature range
    • -40 °C to +125 °C
  • Clocking-status detection function
    • It can judge the validity of data after backup operation return by a status of VL-bit.
  • 32.768 kHz frequency output function
    • CLKOUT pin output (Open Drain output )
    • Output frequency can be selected as 32.768 kHz, 1024 Hz, 32 Hz, or 1 Hz.
  • The various interrupt function
    • Timer function can be set up between 1/4096 second and 255 minutes.
    • Alarm function can be set to day of week,day, hour, or minute.

Pin function

Terminal Directions Functions
CE Input Chip enabled input.
CLK Input Serial clock input.
Dl Input Data input.
DO Output Data output.
CLKOUT Output The CLKOUT pin is a clock output(open drain output)pin with control
output.(Output frequency can be selected as 32.768kHz,1024Hz,32Hz,or 1Hz.)
The CLKOE pin is an input pin used to control the output mode of the CLKOUT output pin.
During the initial power-on (when power is applied from 0V ), if the CLKOE input pin is at high level (= H), the power-on reset function
selects 32.768kHz as the frequency.
CLKOE Input
/INT Output Interrupts output by Alarm and Timer events. (Open drain output)
VDD - VDD
GND - GND

Terminal connection / External dimensions

Terminal connection External dimensions(Unit: mm)

Metal may be exposed on the top or bottom of this product. This will not affect any quality, reliability or electrical spec.


Specifications *Refer to application manual for details.

Recommend Operating Conditions

Item Symbol Conditions Min. Typ. Max. Unit
Operating voltage VDD - 1.6 3.0 5.5 V
Timekeeper voltage VCLK - 1.5 3.0 5.5 V
Operating temperature TOPR - -40 +25 +125 °C

Frequency characteristics

Item Symbol Conditions Rating Unit
Frequency stability Δ f/f Ta=+25°C VDD=3.0V 5±23 *1 ×10-6
Oscillation start up time tSTA Ta=+25°C VDD=1.6V 1.5 Max. s
Ta = -40°C to +125°C VDD=3.0V 3.0 Max. s

*1 ) ;Equivalent to 1 minutes of monthly deviation.

Current consumption under backup mode.

Item Symbol Conditions Min. Typ. Max. Unit
Standby current. lBK fSCL = 0 Hz
CLKOE = "L"
VDD = 5 V
+125°C   1.0 2.0 µA
-40 to +85°C   0.6 1.2
fSCL = 0 Hz
CLKOE = "L"
VDD = 3 V
+125°C   0.8 1.6 µA
-40 to +85°C   0.5 1.0
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