IN1307 Datasheet, PDF (1/38 Pages) IK Semicon Co., Ltd – Programmable rectangular output signal

TECHNICAL DATA
CMOS IC OF REAL TIME WATCH
WITH SERIAL INTERFACE, 64 Х 8 RAM
IN1307
FUNCTIONS AND FEATURES
 Count of seconds, minutes, hours, week days, date, months
and years with consideration of the leap years (before 2100);
 56 bytes of the power self-sufficient RAM for the data storage;
 Two-wire consecutive interface;
 Programmable rectangular output signal;
 Automatic determination of the supply voltage drop and the
switching diagram;
 Consumption of less than 500 nА in the back-up supply mode
with the operating generator;
 Temperature range of the industrial application: -40С – 85С
 Accuracy is better than ±1 minute per month
SOP-8
DIP-8
T_A = -40 to+ 85C
for all packages
Device
IN1307N
IN1307DT
IN1307D
Ordering Information
Operating
Temperature Range
Package
TA = -40°C ~+85°C
for all packages
DIP-8
SOP-8
SOP-8
Packing
Tube
Tape& Reel
Tube
DESCRIPTION
IN1307 is essentially the binary – decimal digital watch with a calendar, it has the additional
56 bytes of the power self-sufficient static RAM and possesses the low power consumption. The
addresses and data are applied consecutively via the two-wire bi-directional bus. The microcircuit
is intended for count of the real time in hours, minutes and seconds, count of week days, date,
month and year. The last day of the month is automatically adjusted for the months of less, than 31
days, including correction for the leap year. The watches function in the 24-hour format or in the
12-hour format with the AM / PM-indicator. IN1307 has the built-in power supply control circuit,
which determines the supply disruption and automatically switches over the device into the battery
mode.
PIN DISCRIPTION
Pin
Symbol
I/O
Pin Description
1
X1
In
Pin for connection of the quartz resonator
2
X2
In
Pin for connection of the quartz resonator
3
VBAT
In
Pin for battery
4
GND
In
Ground pin
5
SDA
Bi
Input / output of serial data
6
SCL
In
Input of the consecutive cycle signal
7
SQW/OUT
Out
Output of rectangular signal
8
VCC
In
Power supply pin
2013, December, Ver.04