Datasheet

DIMENSIONS
RV-8523-C3
Real Time Clock Module with I
2
C Bus
All dimensions in mm typical
DESCRIPTION:
This RTC IC has been specially designed to achieve an ultra-low power
consumption of typically 130nA @ V
DD
3.0V in time-keeping mode.
The very small SMT ceramic-package combines the 32.768 kHz crystal
unit with the CMOS-based oscillator and real-time-clock circuitry.
The calendar function tracks year, month, date, and day-of-the-week
with built-in century and leap-year fl ags. The clock function tracks minute
and second in 24-hour format. Programmable alarm setting, dual timer
functions and integrated switch-over circuitry to backup supply voltage
increase fl exibility.
For pick-and-place equipment, the parts are available in 12 mm tape:
7” (178 mm) reel with 1'000 or 3'000 parts
13” (330 mm) reel with 10'000 parts
Ultra low power consumption 130nA
Xtal integrated solution.
Frequency-Offset Trimming Register
Backup supply switchover circuitry
Miniature SMT ceramic package
Very tight frequency tolerance
I
2
C Bus Interface (fast mode 1 MHz)
Programmable Clock-output
Low aging
Time keeping mode down to 1.2 V
Programmable alarm, timer and
interrupt functions
Package: Recommended Solder Pad:
BLOCK DIAGRAM:
CLKOUT
&
Interrupt
CONTROL
OSC
I
2
C-BUS
2-wire
Serial
Interface
FREQUENCY
DIVIDER
and
OFFSET
COMPENSATION
SYSTEM
CONTROL
LOGIC
32.768 kHz
Xtal
CLKOUT
INT_2
SCL
V
DD
V
SS
POWER
CONTROL
V
BACKUP
SDA
5
2
6
1
8
7
3
4
INT_1
Control 0 00
Timer A Clock
Timer & CLKOUT
Frequency Offset
Day Alarm
Hour Alarm
Minute Alarm
Years
Months
Weekdays
Days
Hours
Minutes
Seconds
Control 2
Control 1
Weekday Alarm
Timer B
Timer B Clock
Timer A
13
100% leadfree, RoHS - compliant
max.0,9
max.0,9
2,50
2,50
3,70
3,70
0,8
0,8
0,6
0,6
0,1
0,1
0,3
0,3
0,5
0,5
0,8
0,8
0,8
0,8
0,8
0,8
0,8
0,8
0,8
0,8
1,4
1,4
0,8
0,8
3,0
3,0
3,70
3,70
1 2
910 8
54
67
3