RX8025SA

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...