Real Time Clock Module
Real time clock module
High-Stability I2C-Bus INTERFACE REAL TIME CLOCK MODULE
RX - 8025 SA / NB
Product number (please...
Description
Real time clock module
High-Stability I2C-Bus INTERFACE REAL TIME CLOCK MODULE
RX - 8025 SA / NB
Product number (please contact us) RX - 8025 SA : Q41802551xxxx00 RX - 8025 NB : Q41802591xxxx00
Built-in 32.768 kHz quartz oscillator :
Frequency adjusted for high accuracy (± 5 ×10−6 / Ta = +25 °C) Interface Type : I2C-Bus Interface (400 kHz) Operating voltage range : 1.70 V to 5.5 V Wide Timekeeper voltage range : 1.15 V to 5.5 V Various detection Functions : Ex. Oscillation stop detection function Low backup current : 0.48 µA / 3 V (Typ.) 32.768kHz frequency output function : C-MOS output With Control Pin The various functions include full calendar, alarm, timer. Complies with EU RoHS directive *The I C-Bus is a trademark of Philips Electronics N.V.
2
RX-8025SA
RX-8025NB
* Refer to the application manual for details.
Actual size
http://www.epsondevice.com
■ Block diagram
FOUT FOE
32 kHz Output Control Comparator_W Alarm_W Register ( Min,Hour,Week ) Voltage Detect Comparator_D Alarm_D Register ( Min,Hour )
■ Overview
Features built-in 32.768 kHz quartz oscillator
VDD
Frequency adjusted for high accuracy. ( ± 5 ×10−6 / Ta = +25 °C ) ( Equivalent to 13 seconds of monthly deviation )
The various detection function
Power supply voltage monitoring function (with selectable detection threshold ) Stop detection function Power-on reset detection function
OSC
Divider Correc -tion
Div.
Time Counter
( Sec,Min,Hour,Week,Day,Month,Year )
OSC Det...
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