S35390A-H Datasheet, PDF (1/51 Pages) Seiko Instruments Inc – FOR AUTOMOTIVE 105°C OPERATION 2-WIRE REAL-TIME CLOCK

S-35390A H Series
www.sii-ic.com
© SII Semiconductor Corporation, 2011-2015
FOR AUTOMOTIVE 105°C OPERATION
2-WIRE REAL-TIME CLOCK
Rev.2.2_01
The S-35390A H Series is a 105°C operation CMOS 2-wire real-time clock IC which operates with the very low current
consumption in the wide range of operation voltage. The operation voltage is 1.3 V to 5.5 V so that the S-35390A H Series
can be used for various power supplies from main supply to backup battery. Due to the 0.25 μA current consumption and wide
range of power supply voltage at time keeping, the S-35390A H Series makes the battery life longer. In the system which
operates with a backup battery, the included free registers can be used as the function for user's backup memory. Users
always can take back the information in the registers which is stored before power-off the main power supply, after the voltage
is restored.
The S-35390A H Series has the function to correct advance / delay of the clock data speed, in the wide range, which is
caused by the crystal oscillation circuit's frequency deviation. Correcting according to the temperature change by combining
this function and a temperature sensor, it is possible to make a high precise clock function which is not affected by the
ambient temperature.
Caution This product can be used in vehicle equipment and in-vehicle equipment. Before using the product in the
purpose, contact to SII Semiconductor Corporation is indispensable.
 Features
• Low current consumption:
0.25 μA typ. (VDD = 3.0 V, Ta = +25°C)
• Wide range of operating voltage:
1.3 V to 5.5 V
• Built-in clock correction function
• Built-in free user register
• 2-wire (I²C-bus) CPU interface
• Built-in alarm interrupter
• Built-in flag generator during detection of low power voltage or at power-on
• Auto calendar up to the year 2099, automatic leap year calculation function
• Built-in constant voltage circuit
• Built-in 32.768 kHz crystal oscillator (built-in Cd, external Cg)
• Operating temperature range:
Ta = −40°C to +105°C
• Lead-free (Sn 100%), halogen-free
• AEC-Q100 qualified^*1
*1. Contact our sales office for details.
 Packages
• 8-Pin SOP (JEDEC)
• 8-Pin TSSOP
1