www.DataSheet4U.com
Real time clock module
High-Stability I2C-Bus INTERFACE REAL TIME CLOCK MODULE
RX - 8025 SA / NB
...
www.DataSheet4U.com
Real time clock module
High-Stability I2C-Bus INTERFACE REAL TIME CLOCK MODULE
RX - 8025 SA / NB
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.) Actual size 32.768 kHz frequency output function : C-MOS output With Control Pin RX-8025SA The various functions include full calendar, alarm, timer. Lead(Pb)-free : Contains high melting temperature type solder (Pb85 %) exempted by RoHS directive. * The I2C-Bus is a trademark of Philips Electronics N.V.
RX-8025NB
Block diagram
Alarm_W Register ( Min,Hour,Week )
Overview
Features built-in 32.768 kHz quartz oscillator
Frequency adjusted for high accuracy. ( ± 5 ×10−6 / Ta = +25 °C ) ( Equivalent to 13 seconds of monthly deviation )
FOUT FOE
32 kHz Output Control
Comparator_W
Voltage Detect
VDD
Comparator_D
Alarm_D Register ( Min,Hour )
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 Detect / INTA / INTB
Address Decoder
Address Register I/O Control
Alarm function an...