S-35190A H Series
www.sii-ic.com
© SII Semiconductor Corporation, 2011-2015
FOR AUTOMOTIVE 105°C OPERATION
3-WIRE REAL-TIME CLOCK
Rev.2.2
_01
The S-35190A H Series is a 105°C operation CMOS 3-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-35190A 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-35190A 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-35190A 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
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*1.
Low current consumption:
0.25
μA
typ. (V
DD
= 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
3-wire (MICROWIRE) 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 C
d
, external C
g
)
Operating temperature range:
Ta =
−40°C
to
+105°C
Lead-free (Sn 100%), halogen-free
AEC-Q100 qualified
*1
Contact our sales office for details.
Packages
•
•
8-Pin SOP (JEDEC)
8-Pin TSSOP
1
FOR AUTOMOTIVE 105°C OPERATION 3-WIRE REAL-TIME CLOCK
S-35190A H Series
Block Diagram
Rev.2.2
_01
XIN
XOUT
Divider,
Oscillation
circuit
Timing generator
INT register 1
INT controller 1
Clock correction register
Status register 1
Status register 2
Comparator 1
Real-time data register
Day of
Second Minute Hour the week Day Month Year
INT
Comparator
2
Free register
Low power supply
voltage detector
Power-on
detection circuit
Constant-voltage
circuit
VSS
INT register 2
VDD
INT controller 2
SIO
SCK
CS
Shift register
Serial
interface
Figure 1
2
Rev.2.2
_01
FOR AUTOMOTIVE 105°C OPERATION 3-WIRE REAL-TIME CLOCK
S-35190A H Series
AEC-Q100 Qualified
This IC supports AEC-Q100 for the operation temperature grade 2.
Contact our sales office for details of AEC-Q100 reliability specification.
Product Name Structure
1. Product name
S-35190A H
-
xxxx
U
Environmental Code
U:
Lead-free (Sn 100%), halogen-free
Package name (abbreviation) and IC packing specification
*1
J8T2: 8-Pin SOP (JEDEC), Tape
T8T2: 8-Pin TSSOP, Tape
Operating temperature
H:
Ta =
−40°C
to
+105°C
Product name
*1.
Refer to the tape drawing.
2. Packages
Table 1
Package Name
8-PinSOP (JEDEC)
8-Pin TSSOP
Package Drawing Codes
Tape
FJ008-D-C-SD
FT008-E-C-SD
Reel
FJ008-D-R-S1
FT008-E-R-S1
Dimension
FJ008-A-P-SD
FT008-A-P-SD
3
FOR AUTOMOTIVE 105°C OPERATION 3-WIRE REAL-TIME CLOCK
S-35190A H Series
Pin Configurations
1. 8-Pin SOP (JEDEC)
Top view
1
2
3
4
8
7
6
5
Rev.2.2
_01
Table 2
Pin No
1
Symbol
Description
I/O
List of Pins
Configuration
INT
XOUT
XIN
VSS
CS
2
3
4
5
6
Output pin for
Output
interrupt signal
Connection
−
pin for crystal
oscillator
GND pin
−
Input pin for
chip select
Input pin for
serial clock
I/O pin for
serial data
Pin for positive
power supply
Nch open-drain output
(no protective diode at VDD)
−
−
Figure 2
S-35190AH-J8T2U
SCK
SIO
VDD
2. 8-Pin TSSOP
7
Top view
1
2
3
4
8
7
6
5
CMOS input
(built-in pull-down resistor.
Input
no protective diode at VDD)
CMOS input
Input
(no protective diode at VDD)
Nch open-drain output
Bi-directional (no protective diode at VDD)
CMOS input
−
−
8
Figure 3
S-35190AH-T8T2U
4
Rev.2.2
_01
Pin Functions
FOR AUTOMOTIVE 105°C OPERATION 3-WIRE REAL-TIME CLOCK
S-35190A H Series
1. CS (input for chip select) pin
This pin is to input chip select, has a pull-down resistor. Communication is available when this pin is in "H". If not using
communication, set this pin "L" or open.
2.
SCK
(input for serial clock) pin
This pin is to input a clock pulse for serial interface. When the CS pin is in "H", the SIO pin inputs / outputs data by
synchronizing with the clock pulse. When the CS pin is in "L" or open, the
SCK
pin does not accept inputting a clock
pulse.
3. SIO (I/O for serial data) pin
This is a data input / output pin of serial interface. When the CS pin is in "H", the SIO pin inputs / outputs data by
synchronizing with a clock pulse from the
SCK
pin. The status is in "High-Z" when the CS pin is in "L" or open, so that
the S-35190A H Series does not transmit data. Setting the CS pin to "H" level from "L" or open, this SIO pin goes in the
input status so that it receives the command data. This pin has CMOS input and Nch open drain output.
4. XIN, XOUT (crystal oscillator connect) pin
Connect a crystal oscillator between XIN and XOUT.
5.
INT
(output for interrupt signal) pin
This pin outputs a signal of interrupt, or a clock pulse. By using the status register 2, users can select either of; alarm 1
interrupt, alarm 2 interrupt, output of user-set frequency, minute-periodical interrupt 1, minute-periodical interrupt 2, or
32.768 kHz output. This pin has Nch open drain output.
6. VDD (positive power supply) pin
Connect this VDD pin with a positive power supply. Regarding the values of voltage to be applied, refer to
"
Recommended Operation Conditions
".
7. VSS pin
Connect the VSS pin to GND.
5
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