S-35190A
www.ablic.com
3-WIRE REAL-TIME CLOCK
© ABLIC Inc., 2004-2018
Rev.4.2_04
The S-35190A is a 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 can be used for various power supplies from
main supply to backup battery. Due to the 0.25 A current consumption and wide range of power supply voltage at time
keeping, the S-35190A 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 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.
Features
*1.
Low current consumption:
0.25 A typ. (VDD = 3.0 V, Ta = 25C)
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 oscillation circuit (built-in Cd, external Cg)
*1
Lead-free, Sn 100%, halogen-free
Refer to " Product Name Structure" for details.
Applications
Mobile game device
Mobile AV device
Digital still camera
Digital video camera
Electronic power meter
DVD recorder
TV, VCR
Mobile phone, PHS
Packages
8-Pin SOP (JEDEC)
8-Pin TSSOP
SNT-8A
1
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
Block Diagram
XIN
XOUT
Divider,
Oscillation
circuit
Timing generator
Clock correction register
Status register 1
INT register 1
INT controller 1
INT
Comparator 1
Real-time data register
Day of
Second Minute Hour the week Day Month Year
Status register 2
Comparator 2
Free register
VDD
Low power supply
voltage detector
Power-on
detection circuit
INT register 2
Shift register
Constant-voltage
circuit
VSS
Figure 1
2
INT controller 2
Serial
interface
SIO
SCK
CS
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
Product Name Structure
1. Product name
1. 1
8-Pin SOP (JEDEC), 8-Pin TSSOP
S-35190A -
xxxx
x
Environmental code
U:
Lead-free (Sn 100%), halogen-free
G:
Lead-free (for details, please contact our sales office)
Package name (abbreviation) and IC packing specification*1
J8T1: 8-Pin SOP (JEDEC), Tape
T8T1: 8-Pin TSSOP, Tape
Product name
*1.
1. 2
Refer to the tape drawing.
SNT-8A
S-35190A -
I8T1
U
Environmental code
U:
Lead-free (Sn 100%), halogen-free
Package name (abbreviation) and IC packing specification*1
I8T1: SNT-8A, Tape
Product name
*1.
Refer to the tape drawing.
2. Packages
Table 1
Package Name
Environmental code = G
8-Pin SOP (JEDEC)
Environmental code = U
Environmental code = G
8-Pin TSSOP
Environmental code = U
SNT-8A
Package Drawing Codes
Dimension
FJ008-A-P-SD
FJ008-A-P-SD
FT008-A-P-SD
FT008-A-P-SD
PH008-A-P-SD
Tape
FJ008-D-C-SD
FJ008-D-C-SD
FT008-E-C-SD
FT008-E-C-SD
PH008-A-C-SD
Reel
FJ008-D-R-SD
FJ008-D-R-S1
FT008-E-R-SD
FT008-E-R-S1
PH008-A-R-SD
Land
PH008-A-L-SD
3
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
Pin Configurations
Table 2
1. 8-Pin SOP (JEDEC)
Pin No
Top view
2
XOUT
6
3
XIN
5
4
VSS
5
CS
Input pin for
chip select
6
SCK
Input pin for
serial clock
7
SIO
I/O pin for
serial data
VDD
Pin for positive
power supply
2
7
3
4
S-35190A-J8T1x
2. 8-Pin TSSOP
Top view
8
7
6
5
Figure 3
8
I/O
Output pin for
Output
interrupt signal
Connection
pins for quartz
crystal
GND pin
INT
8
1
2
3
4
Description
1
1
Figure 2
Symbol
List of Pins
Configuration
Nch open-drain output
(no protective diode at VDD)
CMOS input
(built-in pull-down resistor.
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
3. SNT-8A
Top view
Figure 4
8
7
6
5
S-35190A-I8T1U
Remark 1. x: G or U
2. Please select products of environmental code = U for Sn 100%, halogen-free products.
4
Input
S-35190A-T8T1x
1
2
3
4
Rev.4.2_04
3-WIRE REAL-TIME CLOCK
S-35190A
Pin Functions
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 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 (quartz crystal connect) pins
Connect a quartz crystal 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
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
Equivalent Circuits of Pins
SIO
SCK
Figure 5
SCK pin
CS
SIO pin
INT
Figure 7
6
Figure 6
CS pin
Figure 8
INT pin
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
Absolute Maximum Ratings
Table 3
Item
Power supply voltage
Symbol
VDD
Input voltage
VIN
Output voltage
VOUT
Applied Pin
Absolute Maximum Rating
VSS 0.3 to VSS 6.5
Unit
V
CS, SCK , SIO
VSS 0.3 to VSS 6.5
V
SIO, INT
VSS 0.3 to VSS 6.5
V
Operating ambient
40 to 85
C
Topr
temperature*1
Storage temperature
Tstg
55 to 125
C
*1. Conditions with no condensation or frost. Condensation or frost causes short-circuiting between pins, resulting in a
malfunction.
Caution
The absolute maximum ratings are rated values exceeding which the product could suffer physical
damage. These values must therefore not be exceeded under any conditions.
Recommended Operation Conditions
Table 4
(VSS = 0 V)
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Power supply voltage*1
VDD
Ta = 40C to 85C
1.3
3.0
5.5
V
Time keeping power
Ta = 40C to 85C
VDET 0.15
5.5
V
VDDT
supply voltage*2
Quartz crystal CL value
CL
6
7
pF
*1. The power supply voltage that allows communication under the conditions shown in Table 9 of " AC Electrical
Characteristics".
*2. The power supply voltage that allows time keeping. For the relationship with VDET (low power supply voltage detection
voltage), refer to " Characteristics (Typical Data)".
Oscillation Characteristics
Table 5
(Ta = 25C, VDD = 3.0 V, VSS = 0 V, VT-200 quartz crystal (CL = 6 pF, 32.768 kHz) manufactured by Seiko Instruments Inc.)
Item
Oscillation start voltage
Oscillation start time
IC-to-IC frequency
deviation*1
Frequency voltage
deviation
External capacitance
Internal oscillation
capacitance
*1. Reference value
Symbol
VSTA
tSTA
IC
Condition
Within 10 seconds
Min.
1.1
Typ.
Max.
5.5
1
Unit
V
s
10
10
ppm
V
VDD = 1.3 V to 5.5 V
3
3
ppm/V
Cg
Applied to XIN pin
9.1
pF
Cd
Applied to XOUT pin
8
pF
7
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
DC Electrical Characteristics
Table 6
DC Characteristics (VDD = 3.0 V)
(Ta = 40C to 85C, VSS = 0 V, VT-200 quartz crystal (CL = 6 pF, 32.768 kHz, Cg = 9.1 pF) manufactured by Seiko Instruments Inc.)
Item
Symbol
Applied Pin
Condition
Min.
Typ.
Max.
Unit
Current
IDD1
Out of communication
0.25
0.93
A
consumption 1
During communication
Current
A
3.3
8
IDD2
consumption 2
( SCK = 100 kHz)
Input current
leakage 1
Input current
leakage 2
Input current 1
Input current 2
Input current 3
Output current
leakage 1
Output current
leakage 2
Input voltage 1
IIZH
SCK , SIO
VIN = VDD
0.5
0.5
A
IIZL
SCK , SIO
VIN = VSS
0.5
0.5
A
IIH1
IIH2
IIH3
CS
CS
CS
VIN = VDD
VIN = 0.4 V
VIN = 1.0 V
2
40
6
100
215
16
300
A
A
A
IOZH
SIO, INT
VOUT = VDD
0.5
0.5
A
IOZL
SIO, INT
VOUT = VSS
0.5
0.5
A
VIH
CS, SCK , SIO
0.8 VDD
VSS 5.5
V
Input voltage 2
VIL
CS, SCK , SIO
Output current 1
IOL1
Output current 2
Power supply
voltage detection
voltage
IOL2
INT
SIO
VSS 0.3
0.2 VDD
V
VOUT = 0.4 V
3
5
mA
VOUT = 0.4 V
5
10
mA
0.65
1
1.35
V
VDET
Table 7
DC Characteristics (VDD = 5.0 V)
(Ta = 40C to 85C, VSS = 0 V, VT-200 quartz crystal (CL = 6 pF, 32.768 kHz, Cg = 9.1 pF) manufactured by Seiko Instruments Inc.)
Item
Symbol
Applied Pin
Condition
Min.
Typ.
Max.
Unit
Current
IDD1
Out of communication
A
0.3
1.1
consumption 1
During communication
Current
A
IDD2
6
14
consumption 2
( SCK = 100 kHz)
8
Input current
leakage 1
Input current
leakage 2
Input current 1
Input current 2
Input current 3
Output current
leakage 1
Output current
leakage 2
Input voltage 1
IIZH
SCK , SIO
VIN = VDD
0.5
0.5
A
IIZL
SCK , SIO
VIN = VSS
0.5
0.5
A
IIH1
IIH2
IIH3
CS
CS
CS
VIN = VDD
VIN = 0.4 V
VIN = 2.0 V
8
40
16
150
610
50
350
A
A
A
IOZH
SIO, INT
VOUT = VDD
0.5
0.5
A
IOZL
SIO, INT
VOUT = VSS
0.5
0.5
A
VIH
CS, SCK , SIO
0.8 VDD
VSS 5.5
V
Input voltage 2
VIL
CS, SCK , SIO
VSS 0.3
0.2 VDD
V
Output current 1
IOL1
Output current 2
Power supply
voltage detection
voltage
IOL2
VDET
INT
SIO
VOUT = 0.4 V
5
8
mA
VOUT = 0.4 V
6
13
mA
0.65
1
1.35
V
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
AC Electrical Characteristics
VDD
Table 8 Measurement Conditions
Input pulse voltage
Input pulse rise / fall time
Output determination voltage
Output load
VIH = 0.8 VDD, VIL = 0.2 VDD
20 ns
VOH = 0.8 VDD, VOL = 0.2 VDD
80 pF pull-up resistor 10 k
R = 10 k
SIO
C = 80 pF
Remark
The power supplies of the IC
and load have the same
electrical potential.
Figure 9 Output Load Circuit
Table 9
AC Electrical Characteristics
(Ta = 40C to 85C)
VDD*2 3.0 V
VDD*2 1.3 V
Unit
Item
Symbol
Min.
Typ.
Max.
Min.
Typ.
Max.
Clock pulse width
tSCK
5
250000
1
250000
s
Setup time before CS rise
tDS
1
0.2
s
Hold time after CS rise
tCSH
1
0.2
s
Input data setup time
tISU
1
0.2
s
Input data hold time
tIHO
1
0.2
s
Output data definition time*1
tACC
3.5
1
s
Setup time before CS fall
tCSS
1
0.2
s
Hold time after CS fall
tDH
1
0.2
s
Input rise / fall time
tR, tF
0.1
0.05
s
*1. Since the output format of the SIO pin is Nch open-drain output, output data definition time is determined by the values
of the load resistance (RL) and load capacity (CL) outside the IC. Therefore, use this value only as a reference value.
*2. Regarding the power supply voltage, refer to " Recommended Operation Conditions".
9
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
CS
tDS
tCSH
tCSS
tDH
SCK
tDS
tDH
SIO
Figure 10 Timing Diagram 1 during 3-wire Communication
tISU
tR
80%
SCK
tF
80%
20%
20%
tIHO
Input data
80%
80%
20%
20%
Figure 11 Timing Diagram 2 during 3-wire Communication
tSCK
tSCK
SCK
50%
20%
50%
50%
tACC
Output data
80%
80%
20%
20%
Figure 12 Timing Diagram 3 during 3-wire Communication
10
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
Configuration of Data Communication
1. Data communication
After setting the CS pin "H", transmit the 4-bit fixed code "0110", after that, transmit a 3-bit command and 1-bit read / write
command. Next, data is output or input from B7. Regarding details, refer to " Serial Interface".
Read / write bit
Fixed code
0
1
1
Command
0
C2
C1
C0
R/W
B2
B1
B0
1-byte data
B7
B6
B5
B4
B3
Figure 13 Data Communication
11
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
2. Configuration of command
8 types of command are available for the S-35190A. The S-35190A reads / writes the various registers by inputting these
fixed codes and commands. The S-35190A does not perform any operation with any codes and commands other than
those below. However, in case that the fixed codes or the commands are failed to be recognized in the 1st byte but are
successfully recognized in the 2nd and higher bytes, the commands are executed.
Table 10 List of Commands
Fixed
Code
C2 C1 C0
0
0
0
0
0
0
1
1
0
1
1
*1.
*2.
*3.
*4.
*5.
*6.
12
0
0
Status register 1 access
Status register 2 access
Data
B7
B6
*1
B5
B4
*2
12 / 24 SC0
INT1FE INT1ME INT1AE
RESET
B3
*2
SC1
B2
*3
INT1
INT2
BLD
Y4
M4
D4
W4
H4
m4
s4
Y8
M8
D8
*6
H8
m8
s8
Y10
M10
D10
*6
H10
m10
s10
Y20
*6
D20
*6
H20
m20
s20
SC3
0
Real-time data 1 access
(year data to)
1
Real-time data 2 access
(hour data to)
H1
m1
s1
H2
m2
s2
H4
m4
s4
H8
m8
s8
H10
m10
s10
H20
m20
s20
AM / PM
m40
s40
W1
H1
m1
W2
H2
m2
W4
H4
m4
*6
H8
m8
*6
H10
m10
*6
H20
m20
*6
0
INT register 1 access
(alarm time 1: week / hour / minute)
(INT1AE = 1, INT1ME = 0,
INT1FE = 0)
INT register 1 access
(output of user-set frequency)
(INT1ME = 0, INT1FE = 1)
1 Hz
2 Hz
4 Hz
8 Hz
16 Hz
W1
H1
m1
W2
H2
m2
W4
H4
m4
*6
H8
m8
*6
H10
m10
1
INT register 2 access
(alarm time 2: week / hour / minute)
(INT2AE = 1)
POC*4
Y2
M2
D2
W2
H2
m2
s2
SC2
*2
B0
*4
*5
INT2AE TEST
Y40
Y80
*6
*6
*6
*6
*6
*6
*6
AM / PM
*6
m40
*6
s40
32kE
*2
B1
*3
Y1
M1
D1
W1
H1
m1
s1
0110
1
Command
Description
A1WE
AM / PM A1HE
A1mE
m40
SC4 *2 SC5 *2
*6
H20
m20
*6
*6
*6
SC6 *2
*6
A2WE
AM / PM A2HE
A2mE
m40
V6
V7
F6
F7
1 1 0 Clock correction register access
V0
V1
V2
V3
V4
V5
1 1 1 Free register access
F0
F1
F2
F3
F4
F5
Write-only flag. The S-35190A initializes by writing "1" in this register.
Scratch bit. This is a register which is available for read / write operations and can be used by users freely.
Read-only flag. Valid only when using the alarm function. When the alarm time matches, this flag is set to "1", and it is
cleared to "0" when reading.
Read-only flag. "POC" is set to "1" when power is applied. It is cleared to "0" when reading. Regarding "BLD", refer to
" Low Power Supply Voltage Detection Circuit".
Test bit for ABLIC Inc. Be sure to set to "0" in use.
No effect when writing. It is "0" when reading.
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
Configuration of Registers
1. Real-time data register
The real-time data register is a 7-byte register that stores the data of year, month, day, day of the week, hour, minute, and
second in the BCD code. To write / read real-time data 1 access, transmit / receive the data of year in B7, month, day, day
of the week, hour, minute, second in B0, in 7-byte. When you skip the procedure to access the data of year, month, day,
day of the week, read / write real-time data 2 accesses. In this case, transmit / receive the data of hour in B7, minute,
second in B0, in 3-byte.
The S-35190A transfers a set of data of time to the real-time data register when it recognizes a reading instruction.
Therefore, the S-35190A keeps precise time even if time-carry occurs during the reading operation of the real-time data
register.
Year data (00 to 99)
Start bit of real-time data 1 data access
Y1
Y2
Y4
Y8
Y10
Y20
Y40
B7
Y80
B0
Month data (01 to 12)
M1
M2
M4
M8
M10
0
0
B7
0
B0
Day data (01 to 31)
D1
D2
D4
D8
D10
D20
0
B7
0
B0
Day of the week data (00 to 06)
W1
W2
W4
0
0
0
0
B7
0
B0
Hour data (00 to 23 or 00 to 11)
Start bit of real-time data 2 data access
H1
H2
H4
H8
H10
H20 AM / PM
B7
0
B0
Minute data (00 to 59)
m1
m2
m4
m8
m10
m20
m40
B7
0
B0
Second data (00 to 59)
s1
s2
s4
s8
s10
s20
s40
B7
0
B0
Figure 14
Real-time Data Register
13
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
Year data (00 to 99): Y1, Y2, Y4, Y8, Y10, Y20, Y40, Y80
Sets the lower two digits of the Western calendar year (00 to 99) and links together with the auto calendar
function until 2099.
Example: 2053 (Y1, Y2, Y4, Y8, Y10, Y20, Y40, Y80) = (1, 1, 0, 0, 1, 0, 1, 0)
Month data (01 to 12): M1, M2, M4, M8, M10
Example: December (M1, M2, M4, M8, M10, 0, 0, 0) = (0, 1, 0, 0, 1, 0 ,0 ,0)
Day data (01 to 31): D1, D2, D4, D8, D10, D20
The count value is automatically changed by the auto calendar function.
1 to 31: Jan., Mar., May, July, Aug., Oct., Dec., 1 to 30: April, June, Sep., Nov.
1 to 29: Feb. (leap year), 1 to 28: Feb. (non-leap year)
Example: 29 (D1, D2, D4, D8, D10, D20, 0, 0) = (1, 0, 0, 1, 0, 1, 0, 0)
Day of the week data (00 to 06): W1, W2, W4
A septenary up counter. Day of the week is counted in the order of 00, 01, 02, …, 06, and 00. Set up day of the
week and the count value.
Hour data (00 to 23 or 00 to 11): H1, H2, H4, H8, H10, H20, AM / PM
In 12-hour mode, write 0; AM, 1; PM in the AM / PM bit. In 24-hour mode, users can write either 0 or 1. 0 is
read when the hour data is from 00 to 11, and 1 is read when from 12 to 23.
Example (12-hour mode): 11 p.m.
Example (24-hour mode): 22
(H1, H2, H4, H8, H10, H20, AM / PM, 0) = (1, 0, 0, 0, 1, 0, 1, 0)
(H1, H2, H4, H8, H10, H20, AM / PM, 0) = (0, 1, 0, 0, 0, 1, 1, 0)
Minute data (00 to 59): m1, m2, m4, m8, m10, m20, m40
Example: 32 minutes (m1, m2, m4, m8, m10, m20, m40, 0) = (0, 1, 0, 0, 1, 1, 0, 0)
Example: 55 minutes (m1, m2, m4, m8, m10, m20, m40, 0) = (1, 0, 1, 0, 1, 0, 1, 0)
Second data (00 to 59): s1, s2, s4, s8, s10, s20, s40
Example: 19 seconds (s1, s2, s4, s8, s10, s20, s40, 0) = (1, 0, 0, 1, 1, 0, 0, 0)
14
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
2.
Status register 1
Status register 1 is a 1-byte register that is used to display and set various modes. The bit configuration is shown below.
B7
B6
B5
B4
B3
B2
B1
B0
RESET
12 / 24
SC0
SC1
INT1
INT2
BLD
POC
W
R/W
R/W
R/W
R
R
R
R
R:
W:
R / W:
Figure 15
Read
Write
Read / write
Status Register 1
B0: POC
This flag is used to confirm whether the power is on. The power-on detection circuit operates at power-on and B0 is
set to "1". This flag is read-only. Once it is read, it is automatically set to "0". When this flag is "1", be sure to initialize.
Regarding the operation after power-on, refer to " Power-on Detection Circuit and Register Status".
B1: BLD
This flag is set to "1" when the power supply voltage decreases to the level of detection voltage (VDET) or less. Users
can detect a drop in the power supply voltage. Once this flag is set to "1", it is not set to "0" again even if the power
supply increases to the level of detection voltage (VDET) or more. This flag is read-only. When this flag is "1", be sure to
initialize. Regarding the operation of the power supply voltage detection circuit, refer to " Low Power Supply
Voltage Detection Circuit".
B2: INT2, B3: INT1
This flag indicates the time set by alarm and when the time has reached it. This flag is set to "1" when the time that
users set by using the alarm interrupt function has come. The INT1 flag at alarm 1 interrupt mode and the INT2 flag at
alarm 2 interrupt mode are set to "1". Set "0" in INT1AE (B5 in the status register 2) or in INT2AE (B1 in the status
register 2) after reading "1" in the INT1 flag or in the INT2 flag. This flag is read-only. Once this flag is read, it is set to
"0" automatically.
B4: SC1, B5: SC0
These flags are SRAM type registers, they are 2 bits as a whole, can be freely set by users.
B6: 12 / 24
This flag is used to set 12-hour or 24-hour mode. Set the flag ahead of write operation of the real-time data register in
case of 24-hour mode.
0: 12-hour mode
1: 24-hour mode
B7: RESET
The internal IC is initialized by setting this bit to "1". This bit is write-only. It is always "0" when reading. When applying
the power supply voltage to the IC, be sure to write "1" to this bit to initialize the circuit. Regarding each status of
registers after initialization, refer to " Register Status After Initialization".
15
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
3. Status register 2
Status register 2 is a 1-byte register that is used to display and set various modes. The bit configuration is shown below.
B7
B6
B5
B4
B3
B2
B1
B0
INT1FE
INT1ME
INT1AE
32kE
SC2
SC3
INT2AE
TEST
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R / W: Read / write
Figure 16
Status Register 2
B0: TEST
This is a test flag for ABLIC Inc. Be sure to set this flag to "0" in use. If this flag is set to "1", be sure to initialize to set
"0".
B1: INT2AE
This is an enable bit for alarm 2 interrupt. When this bit is "0", alarm 2 interrupt is disabled. When it is "1", it is enabled.
To use alarm 2 interrupt, access the INT register 2 after enabling this flag.
Caution Note that alarm 2 interrupt is output from the INT pin regardless of the settings in flags B4 to B7.
B2: SC3, B3: SC2
These are 2-bit SRAM type registers that can be freely set by users.
B4: 32kE, B5: INT1AE, B6: INT1ME, B7: INT1FE
These bits are used to select the output mode for the INT pin. Table 11 shows how to select the mode. To use alarm
1 interrupt, access the INT register 1 after setting the alarm 1 interrupt mode.
Table 11 Output Modes for INT Pin
32kE
*1.
16
INT1AE
INT1ME
0
0
0
*1
0
0
*1
0
1
0
0
1
0
1
0
0
1
1
*1
*1
1
Don't care (both of 0 and 1 are acceptable).
INT1FE
0
1
0
1
0
1
*1
INT Pin Output Mode
No interrupt
Output of user-set frequency
Per-minute edge interrupt
Minute-periodical interrupt 1 (50% duty)
Alarm 1 interrupt
Minute-periodical interrupt 2
32.768 kHz output
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
4.
INT register 1 and INT register 2
The INT register 1 is to set up the output of user-set frequency, or to set up alarm 1 interrupt. The INT register 2 is for
setting alarm 2 interrupt. Users are able to switch the output mode by using the status register 2. If selecting to use the
output mode for alarm interrupt by status register 2; this register works as the alarm-time data register. In the INT register
1, if selecting the output of user-set frequency by status register 2; this register works as the data register to set the
frequency for clock output. From the INT pin, a clock pulse and alarm interrupt are output, according to the or-condition
that these two registers have.
4. 1
Alarm interrupt
Users can set the alarm time (the data of day of the week, hour, minute) by using the INT register 1 and 2 which are
3-byte data registers. The configuration of register is as well as the data register of day of the week, hour, minute, in
the real-time data register; is expressed by the BCD code. Do not set a nonexistent day. Users are necessary to set
up the alarm-time data according to the 12 / 24 hour expression that they set by using the status register 1.
INT register 1
W1
W2
INT register 2
W4
0
0
B7
H1
H2
H4
H8
0
0
A1WE
W1
B0
B7
/ A1HE
H10 H20 AM
PM
B7
B0
m1
m2
m4
m8
H1
m1
B0
B7
Figure 17
0
0
0
0
A2WE
B0
H2
H4
H8
B7
m10 m20 m40 A1mE
B7
W4
W2
H10 H20 AM / A2HE
PM
B0
m2
m4
m8 m10 m20 m40 A2mE
B0
INT Register 1 and INT Register 2 (Alarm-Time Data)
The INT register 1 has A1WE, A1HE, A1mE at B0 in each byte. It is possible to make data valid; the data of day of the
week, hour, minute which are in the corresponding byte; by setting these bits to "1". This is as well in A2WE, A2HE,
A2mE in the INT register 2.
Setting example: alarm time "7:00 pm" in the INT register 1
(1)
12-hour mode (status register 1 B6 = 0)
set up 7:00 PM
Data written to INT register 1
*1
*1
*1
*1
*1
Day of the week
Hour
1
1
1
0
0
Minute
0
0
0
0
0
B7
*1. Don't care (both of 0 and 1 are acceptable).
(2)
*1
0
0
*1
1
0
0
1
1
B0
*1
0
0
*1
1*2
0
0
1
1
B0
24-hour mode (status register 1 B6 = 1)
set up 19:00 PM
Data written to INT register 1
*1
*1
*1
*1
*1
Day of the week
Hour
1
0
0
1
1
Minute
0
0
0
0
0
B7
*1. Don't care (both of 0 and 1 are acceptable).
*2. Set up AM / PM flag along with the time setting.
17
3-WIRE REAL-TIME CLOCK
S-35190A
4. 2
Rev.4.2_04
Output of user-set frequency
The INT register 1 is a 1-byte data register to set up the output frequency. Setting each bit B7 to B3 in the register to
"1", the frequency which corresponds to the bit is output in the AND-form. SC4 to SC6 is 3-bit SRAM type registers
that can be freely set by users.
B7
B6
B5
B4
B3
B2
B1
B0
1 Hz
2 Hz
4 Hz
8 Hz
16 Hz
SC4
SC5
SC6
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R / W: Read / write
Figure 18 INT Register 1 (Data Register for Output Frequency)
Example: B7 to B3 = 50h
16 Hz
8 Hz
4 Hz
2 Hz
1 Hz
INT pin output
Status register 2
• Set to INT1FE = 1
Figure 19
Example of Output from INT Register 1 (Data Register for Output Frequency)
1 Hz clock output is synchronized with second-counter of the S-35190A.
INT pin output (1 Hz)
Second-counter
n
n1
Figure 20 1 Hz Clock Output and Second-counter
18
n2
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
5. Clock correction register
The clock correction register is a 1-byte register that is used to correct advance / delay of the clock. When not using this
function, set this register to "00h". Regarding the register values, refer to " Function of Clock Correction".
B7
B6
B5
B4
B3
B2
B1
B0
V0
V1
V2
V3
V4
V5
V6
V7
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R / W: Read / write
Figure 21
Clock Correction Register
6. Free register
The free register is a 1-byte SRAM type register that can be set freely by users.
B7
B6
B5
B4
B3
B2
B1
B0
F0
F1
F2
F3
F4
F5
F6
F7
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R / W: Read / write
Figure 22
Free Register
19
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
Power-on Detection Circuit and Register Status
The power-on detection circuit operates by power-on the S-35190A, as a result each register is cleared; each register is set
as follows.
Real-time data register:
Status register 1:
Status register 2:
INT register 1:
INT register 2:
Clock correction register:
Free register:
00 (Y), 01 (M), 01 (D), 0 (day of the week), 00 (H), 00 (M), 00 (S)
"01h"
"80h"
"80h"
"00h"
"00h"
"00h"
"1" is set in the POC flag (B0 in the status register 1) to indicate that power has been applied. To correct the oscillation
frequency, the status register 2 goes in the mode the output of user-set frequency, so that 1 Hz clock pulse is output from
the INT pin. When "1" is set in the POC flag, be sure to initialize. The POC flag is set to "0" due to initialization so that the
output of user-set frequency mode is cleared. (Refer to " Register Status After Initialization".)
For the regular operation of power-on detection circuit, as seen in Figure 23, the period to power-up the S-35190A is that
the voltage reaches 1.3 V within 10 ms after setting the IC’s power supply voltage at 0 V. When the power-on detection
circuit is not working normally is; the POC flag (B0 in the status register 1) is not in "1", or 1 Hz is not output from the INT pin.
In this case, power-on the S-35190A once again because the internal data may be in the indefinite status.
Moreover, regarding the processing right after power-on, refer to " Flowchart of Initialization and Example of Real-time
Data Set-up".
Within 10 ms
1.3 V
0V
*1
*1. 0 V indicates that there are no potential differences between the VDD
pin and VSS pin of the S-35190A.
Figure 23 How to Raise the Power Supply Voltage
20
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
Register Status After Initialization
The status of each register after initialization is as follows.
Real-time data register:
Status register 1:
Status register 2:
INT register 1:
INT register 2:
Clock correction register:
Free register:
00 (Y), 01 (M), 01 (D), 0 (day of the week), 00 (H), 00 (M), 00 (S)
"0 B6 B5 B4 0 0 0 0 b"
(In B6, B5, B4, the data of B6, B5, B6 in the status register 1 at initialization is set.
Refer to Figure 24.)
"00h"
"00h"
"00h"
"00h"
"00h"
Write to status register 1
Read from status register 1
CS
SCK
SIO
X 0 11 0 0 0 00 10 1 0 0 0 0 0
Fixed code command
B7 B5
0 1 1 0 0 0 0 1 0 0 1 0 0 0 00
Fixed code command B5: Not reset
Write "1" to reset flag and
SC0.
Figure 24
Status Register 1 Data at Initialization
21
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
Low Power Supply Voltage Detection Circuit
The S-35190A has a low power supply voltage detection circuit, so that users can monitor drops in the power supply
voltage by reading the BLD flag (B1 in the status register 1). There is a hysteresis width of approx. 0.15 V (typ.) between
detection voltage and release voltage (refer to " Characteristics (Typical Data)"). The low power supply voltage
detection circuit does the sampling operation only once in one sec for 15.6 ms.
If the power supply voltage decreases to the level of detection voltage (VDET) or less, "1" is set to the BLD flag so that
sampling operation stops. Once "1" is detected in the BLD flag, no sampling operation is performed even if the power
supply voltage increases to the level of release voltage or more, and "1" is held in the BLD flag.
Furthermore, the S-35190A does not initialize the internal circuit even if "1" is set to the BLD flag. If the BLD flag is "1" even
after the power supply voltage is recovered, the internal circuit may be in the indefinite status. In this case, be sure to
initialize the circuit. Without initializing, if the next BLD flag reading is done after sampling, the BLD flag gets reset to "0". In
this case, be sure to initialize although the BLD flag is in "0" because the internal circuit may be in the indefinite status.
VDD
Hysteresis width
0.15 V approximately
Detection voltage
Release
voltage
Time keeping power
supply voltage (min.)
BLD flag reading
Sampling pulse
15.6 ms
1s
1s
Stop
Stop
Stop
BLD flag
Figure 25 Timing of Low Power Supply Voltage Detection Circuit
Circuits Power-on and Low Power Supply Voltage Detection
Figure 26 shows the changes of the POC flag and BLD flag due to VDD fluctuation.
VDD
Low power supply voltage
detection voltage
POC flag
BLD flag
Status register 1
reading
Figure 26 POC Flag and BLD Flag
22
Low power supply voltage
detection voltage
VSS
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
Correction of Nonexistent Data and End-of-Month
When users write the real-time data, the S-35190A checks it. In case that the data is invalid, the S-35190A does the
following procedures.
1. Processing of nonexistent data
Table 12
Register
Year data
Month data
Day data
Day of the week data
24-hour
Hour data*1
12-hour
Minute data
Second data*2
Normal Data
00 to 99
01 to 12
01 to 31
0 to 6
0 to 23
0 to 11
00 to 59
00 to 59
Processing of Nonexistent Data
Nonexistent Data
XA to XF, AX to FX
00, 13 to 19, XA to XF
00, 32 to 39, XA to XF
7
24 to 29, 3X, XA to XF
12 to 20, XA to XF
60 to 79, XA to XF
60 to 79, XA to XF
Result
00
01
01
0
00
00
00
00
*1. In 12-hour mode, write the AM / PM flag (B1 in hour data in the real-time data register).
In 24-hour mode, the AM / PM flag in the real-time data register is omitted. However in the flag of reading, users are
able to read 0; 0 to 11, 1; 12 to 23.
*2. Processing of nonexistent data, regarding second data, is done by a carry pulse which is generated in 1 second, after
writing. At this point the carry pulse is sent to the minute-counter.
2. Correction of end-of-month
A nonexistent day, such as February 30 and April 31, is set to the first day of the next month.
23
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
INT Pin Output Mode
These are selectable for the INT pin output mode;
Alarm 1 interrupt, alarm 2 interrupt, the output of user-set frequency, per-minute edge interrupt output, minute-periodical
interrupt output 1 and 2, 32.768 kHz output.
In alarm 1 interrupt / output of frequency; set data in the INT register 1. In alarm 2 interrupt, set data in the INT register 2. To
swith the output mode, use the status register 2. Refer to "3. Status register 2" in " Configuration of Registers".
When switching the output mode, be careful of the output status of the pin. Especially, when using alarm interrupt / output of
frequency, switch the output mode after setting "00h" in the INT register 1 or 2. Alarm 2 interrupt is dependent from other
modes. Regardless of other settings of mode if alarm 2 interrupt was generated, be careful that "L" is output from the INT
pin. In 32.768 kHz output / per-minute edge interrupt output / minute-periodical interrupt output, it is unnecessary to set data
in the INT register 1 or 2 for users.
Refer to the followings regarding each operation of output modes.
1. Alarm interrupt output
Alarm interrupt output is the function to output "L" from the INT pin, at the alarm time which is set by user has come. If
setting the pin output to "H", turn off the alarm function by setting "0" in INT1AE / INT2AE in the status register 2.
To set the alarm time, set the data of day of the week, hour, minute in the INT register 1 or 2, set the data of year, month,
day in the INT register 1 or 2. Refer to "4. INT register 1 and INT register 2" in " Configuration of Register".
1. 1
Alarm setting of "W (day of the week), H (hour), m (minute)"
Status register 2 setting
Alarm 1 interrupt
32kE = 0, INT1ME = INT1FE = 0
Alarm 2 interrupt
None
INT register x alarm enable flag
AxHE = AxmE = AxWE = "1"
INT register 1
INT register 2
mx
Hx
Wx
Alarm interrupt
Comparator
Second Minute Hour Day of Day Month Year
the week
Real-time data
W (day of the week)
Real-time data H h (m 1) m 59 s H h m m 00 s 01 s
Change by program
59 s H h (m 1) m 00 s
Change by program Change by program
INT1AE / INT2AE
INT pin
*1
Alarm time matches
OFF
Period when alarm time matches
*1. If users clear INT1AE / INT2AE once; "L" is not output from the INT pin by setting INT1AE / INT2AE enable again,
within a period when the alarm time matches real-time data.
Figure 27
24
Alarm Interrupt Output Timing
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
1. 2
Alarm setting of "H (hour)"
Status register 2 setting
Alarm 1 interrupt
32kE = 0, INT1ME = INT1FE = 0
Alarm 2 interrupt
None
INT register x alarm enable flag
AxWE = AxmE = "0", AxHE = "1"
INT register 1
INT register 2
mx Hx Wx Dx Mx
Yx
Alarm interrupt
Comparator
Second Minute Hour
Day of
Day
the week
Month Year
Real-time data
Real-time data
(H 1) h 59 m 59 s
Change by program
H h 00 m 00 s 01 s
Change by program
INT1AE / INT2AE
*1
Alarm time matches
INT pin
59 s H h 01 m 00 s
H h 59 m 59 s
Change by program
Change by program
OFF
Alarm time
*2
matches
(H 1) h 00 m 00 s
*1
OFF
Period when alarm time matches
*1. If users clear INT1AE / INT2AE once; "L" is not output from the INT pin by setting INT1AE / INT2AE enable again,
within a period when the alarm time matches real-time data.
*2. If turning the alarm output on by changing the program, within the period when the alarm time matches real-time data,
"L" is output again from the INT pin when the minute is counted up.
Figure 28
Alarm Interrupt Output Timing
2. Output of user-set frequency
The output of user-set frequency is the function to output the frequency which is selected by using data, from the INT pin,
in the AND-form. Set up the data of frequency in the INT register 1.
Refer to "4. INT register 1 and INT register 2" in " Configuration of Register".
Status register 2 setting
32kE = 0, INT1AE = Don’t care (0 or 1), INT1ME = 0
Change by program
INT1FE
Free-run output starts
OFF
INT pin
Figure 29 Output Timing of User-set Frequency
25
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
3. Per-minute edge interrupt output
Per-minute edge interrupt output is the function to output "L" from the INT pin, when the first minute-carry processing is
done, after selecting the output mode. To set the pin output to "H", set "0" in INT1ME in the status register 2 to turn off the
output mode of per-minute edge interrupt.
Status register 2 setting
• 32kE = 0, INT1AE = Don’t care (0 or 1), INT1FE = 0
Change by program
INT1ME
Minute-carry processing
Minute-carry
processing
OFF
INT pin
"L" is output again if this period is within 7.81 ms*1.
*1. Pin output is set to "H" by disabling the output mode within 7.81 ms, because the signal of this procedure is
maintained for 7.81 ms. Note that pin output is set to "L" by setting the output mode enable again.
Figure 30 Timing of Per-Minute Edge Interrupt Output
4. Minute-periodical interrupt output 1
The minute-periodical interrupt 1 is the function to output the one-minute clock pulse (Duty 50%) from the INT pin, when
the first minute-carry processing is done, after selecting the output mode.
Status register 2 setting
Change by program (OFF)
32kE = 0, INT1AE = 0
INT1FE,
INT1ME
Minute-carry
processing
Minute-carry
processing
Minute-carry
processing
Minute-carry
processing
Minute-carry
processing
30 s
30 s
30 s
30 s
INT pin
30 s
30 s
30 s
30 s
30 s
"L" is output again if this period is within 7.81 ms*1.
"H" is output again if this period is 7.81 ms or longer.
"L" is output at the next minute-carry processing.
*1. Setting the output mode disable makes the pin output "H", while the output from the INT pin is in "L". Note that pin
output is set to "L" by setting the output mode enable again.
Figure 31 Timing of Minute-periodical Interrupt Output 1
26
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
5. Minute-periodical interrupt output 2
The output of minute-periodical interrupt 2 is the function to output "L", for 7.81 ms, from the INT pin, synchronizing with
the first minute-carry processing after selecting the output mode. However, during a reading operation in the real-time
data register, the procedure delays at 0.5 seconds max. thus output "L" from the INT pin also delays at 0.5 seconds max.
during writing in the real-time data register, some delay is made in the output period due to write timing and the
second-data of writing.
(1)
During normal operation
Minute-carry processing
Minute-carry processing
Minute-carry processing
INT pin
7.81 ms
(2)
7.81 ms
60 s
7.81 ms
60 s
During reading operation in the real-time data register
(Normal minutecarry processing) Minute-carry processing
Minute-carry processing
Minute-carry processing
INT pin
0.5 s max.
7.81 ms
7.81 ms
60 s
60 s
7.81 ms
Serial
communication
Real-time data
read command
(3)
Real-time
Real-time data Real-time
data reading read command data reading
During writing operation in the real-time data register
Minute-carry processing
Minute-carry processing
Minute-carry processing
INT pin
7.81 ms
55 s
45 s
7.81 ms
10 s
30 s
7.81 ms
80 s
50 s
Real-time data
write timing
Second data of writing: "50" s
Second data of writing: "10" s
The output period is shorter.
The output period is longer.
Figure 32 Timing of Minute-periodical Interrupt Output 2
27
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
6. Operation of power-on detection circuit
When power is applied to the S-35190A, the power-on detection operates to set "1" in the POC flag (B0 in the status
register 1). A 1 Hz clock pulse is output from the INT pin.
Status register 2 setting
32kE = 0, INT1AE = INT1ME = 0,
Change by reset command
INT1FE
OFF
INT pin
0.5 s
0.5 s
Figure 33 Output Timing of INT Pin during Operation of Power-on Detection Circuit
Function of Clock Correction
The function of clock correction is to correct advance / delay of the clock due to the deviation of oscillation frequency, in
order to make a high precise clock. For correction, the S-35190A adjusts the clock pulse by using a certain part of the
dividing circuit, not adjusting the frequency of the quartz crystal. Correction is performed once every 20 seconds (or 60
seconds). The minimum resolution is approx. 3 ppm (or approx. 1 ppm) and the S-35190A corrects in the range of 195.3
ppm to 192.2 ppm (or of 65.1 ppm to 64.1 ppm) (Refer to Table 13). Users can set up this function by using the clock
correction register. Regarding how to calculate the setting data, refer to "1. How to calculate". When not using this
function, be sure to set "00h".
Table 13 Function of Clock Correction
Item
Correction
Minimum resolution
Correction range
28
B0 = 0
Every 20 seconds
3.052 ppm
195.3 ppm to 192.2 ppm
B0 = 1
Every 60 seconds
1.017 ppm
65.1 ppm to 64.1 ppm
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
1. How to calculate
1. 1
If current oscillation frequency > target frequency (in case the clock is fast)
*1
Correction value = 128 Integral value
Caution
(Current oscillation frequency
*3
*2
actual measurement value ) (Target oscillation frequency )
(Current oscillation frequency
*2
actual measurement value )
*4
(Minimum resolution )
The figure range which can be corrected is that the calculated value is from 0 to 64.
*1. Convert this value to be set in the clock correction register. For how to convert, refer to "(1)
example 1".
Calculation
*2. Measurement value when 1 Hz clock pulse is output from the INT pin.
*3. Target value of average frequency when the clock correction function is used.
*4. Refer to "Table 13 Function of Clock Correction".
(1)
Calculation example 1
In case of current oscillation frequency actual measurement value = 1.000070 [Hz], target oscillation frequency =
1.000000 [Hz], B0 = 0 (Minimum resolution = 3.052 ppm)
(1.000070) (1.000000)
Correction value = 128 Integral value
(1.000070) (3.052 106)
= 128 Integral value (22.93) = 128 22 = 106
Convert the correction value "106" to 7-bit binary and obtain "1101010b".
Reverse the correction value "1101010b" and set it to B7 to B1 of the clock correction register.
Thus, set the clock correction register:
(B7, B6, B5, B4, B3, B2, B1, B0) = (0, 1, 0, 1, 0, 1, 1, 0)
1. 2
If current oscillation frequency < target frequency (in case the clock is slow)
Correction value = Integral value
Caution
(1)
(Current oscillation frequency
(Target oscillation frequency) actual measurement value)
(Current oscillation frequency
actual measurement value)
1
(Minimum resolution)
The figure range which can be corrected is that the calculated value is from 0 to 62.
Calculation example 2
In case of current oscillation frequency actual measurement value = 0.999920 [Hz], target oscillation frequency =
1.000000 [Hz]. B0 = 0 (Minimum resolution = 3.052 ppm)
(1.000000) (0.999920)
Correction value = Integral value
1
(0.999920) (3.052 10-6)
= Integral value (26.21) 1 = 26 1 = 27
Thus, set the clock correction register:
(B7, B6, B5, B4, B3, B2, B1, B0) = (1, 1, 0, 1, 1, 0, 0, 0)
(2)
Calculation example 3
In case of current oscillation frequency actual measurement value = 0.999920 [Hz], target oscillation frequency =
1.000000 [Hz], B0 = 1 (Minimum resolution = 1.017 ppm)
(1.000000) (0.999920)
Correction value = Integral value
1
0.999920
(
) (1.017 10-6)
= Integral value (78.66) 1
This calculated value exceeds the correctable range 0 to 62.
B0 = "1" (minimum resolution = 1.017 ppm) indicates the correction is impossible.
29
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
2. Setting values for registers and correction values
Table 14
Table 15
30
Setting Values for Registers and Correction Values (Minimum Resolution: 3.052 ppm (B0 = 0))
B7
B6
B5
B4
B3
B2
B1
B0
1
0
1
1
1
0
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
1
0
1
0
1
1
0
0
1
1
0
0
0
0
1
1
1
0
0
0
1
1
1
0
0
0
1
1
1
0
0
0
1
1
1
0
0
0
0
0
0
0
1
0
1
0
0
0
0
0
0
0
0
1
1
1
0
0
0
1
1
1
0
0
0
0
0
0
1
1
1
0
0
0
Correction Value
[ppm]
192.3
189.2
186.2
6.1
3.1
0
3.1
6.1
9.2
189.2
192.3
195.3
Rate
[s / day]
16.61
16.35
16.09
0.53
0.26
0
0.26
0.53
0.79
16.35
16.61
16.88
Setting Values for Registers and Correction Values (Minimum Resolution: 1.017 ppm (B0 = 1))
B7
B6
B5
B4
B3
B2
B1
B0
1
0
1
1
1
0
1
1
1
1
1
1
1
1
1
0
0
0
1
1
1
0
1
0
1
0
1
1
0
0
1
1
0
0
0
0
1
1
1
0
0
0
1
1
1
0
0
0
1
1
1
0
0
0
1
1
1
1
1
1
1
1
1
0
1
0
1
0
0
0
0
0
0
0
0
1
1
1
0
0
0
1
1
1
0
0
0
0
0
0
1
1
1
1
1
1
Correction Value
[ppm]
64.1
63.1
62.0
2.0
1.0
0
1.0
2.0
3.0
63.1
64.1
65.1
Rate
[s / day]
5.54
5.45
5.36
0.18
0.09
0
0.09
0.18
0.26
5.45
5.54
5.62
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
3. How to confirm a setting value for a register and the result of correction
The S-35190A does not adjust the frequency of the quartz crystal by using the function of clock correction. Therefore
users cannot confirm if it is corrected or not by measuring output 32.768 kHz. When the function of clock correction is
being used, the cycle of 1 Hz clock pulse output from the INT pin changes once in 20 times or 60 times, as shown in
Figure 34.
INT pin
(1 Hz output)
a
a
a
19 times or 59 times
b
a
Once
In case of B0 = 0: a = 19 times, b = Once
In case of B0 = 1: a = 59 times, b = Once
Figure 34 Confirmation of the clock correction
Measure a and b by using the frequency counter*1. Calculate the average frequency (Tave) based on the measurement
results.
B0 = 0, Tave = (a 19 + b) 20
B0 = 1, Tave = (a 59 + b) 60
Calculate the error of the clock based on the average frequency (Tave). The following shows an example for confirmation.
Confirmation example: When B0 =0, 66h is set
Measurement results: a = 1.000080 Hz, b = 0.998493 Hz
Clock Correction Register Setting Value
Average frequency [Hz]
Before correction 00 h (Tave = a)
1.000080
After correction
66 h (Tave = (a 19 + b) 20) 1.00000065
Per Day [s]
86393
86399.9
Calculating the average frequency allows to confirm the result of correction.
*1. Use a high-accuracy frequency counter of 7 digits or more.
Caution
Measure the oscillation frequency under the usage conditions.
31
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
Serial Interface
The S-35190A receives various commands via 3-wire serial interface to read / write data. Regarding transmission is as
follows.
1. Data reading
When data is input from the SIO pin in synchronization with the falling of the SCK clock after setting the CS pin to "H", the
data is loaded internally in synchronization with the next rising of the SCK clock. When R / W bit = "1" is loaded at the
eighth rising of the SCK clock, the status of data reading is entered. Data corresponding to each command is then output
in synchronization with the falling of the subsequent SCK clock input. When the SCK clock is less than 8, the IC is in
the clock-wait status, and no processing is performed.
2. Data writing
When data is input from the SIO pin in synchronization with the falling of the SCK clock after setting the CS pin to "H", the
data is loaded internally in synchronization with the next rising of the SCK clock. When R / W bit = "0" is loaded at the
eighth rising of the SCK clock, the status of data writing is entered. In this status, the data, which is input in
synchronization with the falling of the subsequent SCK clock input, is written to registers according to each command. In
data writing, input a clock pulse which is equivalent to the byte of the register. As well as reading, when the SCK clock is
less than 8, the IC is in the clock-wait status, and no processing is performed.
3. Data access
3. 1
Real-time data 1 access
CS
1
8
16
56
64
B7
B0
SCK
R/W
SIO
X 0110010
B7
Fixed code
command
B0
Year data
When reading: Output mode switching
Figure 35
32
Real-Time Data 1 Access
Second data
When reading:
Input mode switching
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
3. 2
Real-time data 2 access
CS
16
8
1
24
32
SCK
R/W
SIO
X 01100 11
B7
Fixed code
command
B0 B7
B0 B7
Minute data
Hour data
B0
Second data
When reading: Output mode switching
Figure 36
3. 3
When reading:
Input mode switching
Real-Time Data 2 Access
Status register 1 access and status register 2 access
CS
1
16
8
SCK
*1
SIO
R/W
X 011000
B7
Fixed code
command
When reading: Output mode switching
B0
Status data
When reading:
Input mode switching
*1. 0: Status register 1 selected
1: Status register 2 selected
Figure 37
Status Register 1 Access and Status Register 2 Access
33
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
3. 4 INT register 1 access and INT register 2 access
In read / write the INT register 1, data varies depending on the setting of the status register 2. Be sure to read / write
the INT register 1 after setting the status register 2. When setting the alarm by using the status register 2, these
registers work as 3-byte alarm time data registers, in other statuses, they work as 1-byte registers. When outputting
the user-set frequency, they are the data registers to set up the frequency.
Read / write the INT register 2 after setting INT2AE in the status register 2. When INT2AE is in "1", the INT register 2
works as for setting the 3-byte alarm time data. The INT register 2 does not have the function to output the user-set
frequency. Regarding details of each data, refer to "4. INT register 1 and INT register 2" in " Configuration of
Register".
Caution
Users cannot use both functions of alarm 1 interrupt and the output of user-set frequency
simultaneously.
CS
1
8
16
24
32
SCK
R/W
*1
SIO
X 011010
B7
Fixed code
command
When reading: Output mode switching
B0 B7
Day of the
week data
B0 B7
Hour data
B0
Minute data
When reading:
Input mode switching
*1. 0: INT register 1 selected
1: INT register 2 selected
Figure 38
INT Register 1 Access and INT Register 2 Access
CS
1
8
16
SCK
R/W
SIO
X 0110100
B7
Fixed code
command
B0
Frequency setting
data
When reading:
Input mode switching
When reading: Output mode switching
Figure 39 INT Register 1 (Data Register for output frequency) Access
34
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
3. 5
Clock correction register access
CS
1
8
16
SCK
R/W
SIO
X 0110110
B7
Fixed code
command
B0
Clock correction
data
When reading:
Input mode switching
When reading: Output mode switching
Figure 40
3. 6
Clock Correction Register Access
Free register access
CS
1
8
16
SCK
R/W
SIO
X 0110111
B7
Fixed code
command
B0
Free register data
When reading: Output mode switching
Figure 41
When reading:
Input mode switching
Free Register Access
35
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
Flowchart of Initialization and Example of Real-time Data Set-up
Figure 42 is a recommended flowchart when the master device shifts to a normal operation status and initiates
communication with the S-35190A. Regarding how to apply power, refer to " Power-on Detection Circuit and Register
Status". It is unnecessary for users to comply with this flowchart of real-time data strictly. And if using the default data at
initializing, it is also unnecessary to set up again.
START
Read status register 1
NO
POC = 1
YES
Wait for 0.5 s
*1
NO
BLD = 0
YES
Initialize
(status register 1 B7 = 1)
Read real-time data 1
Read status register 1
NO
POC = 0
YES
NO
BLD = 0
YES
Set 24-hour / 12-hour mode
to status register 1
Read status register 1
Confirm data in status
register 1
NG
OK
Set real-time data 1
Read real-time data 1
*2
Confirm data in real-time
data 1
NG
OK
END
*1.
*2.
Do not communicate for 0.5 seconds since the power-on detection circuit is in operation.
Reading the real-time data 1 should be completed within 1 second after setting the real-time data 1.
Figure 42
36
Example of Initialization Flowchart
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
Examples of Application Circuits
VCC
10 k
System power supply
VCC
INT
VDD
S-35190A
10 k
CS
CPU
SIO
VSS
SCK
VSS
XOUT
XIN
Cg
Caution
1.
2.
Because the I/O pin has no protective diode on the VDD side, the relation of VCC VDD is possible.
But pay careful attention to the specifications.
Start communication under stable condition after power-on the power supply in the system.
Figure 43
Application Circuit 1
System power supply
10 k
VCC
INT
CS
VDD
10 k
S-35190A
SCK
VSS
XIN
CPU
SIO
VSS
XOUT
Cg
Caution Start communication under stable condition after power-on the power supply in the system.
Figure 44
Caution
Application Circuit 2
The above connection diagrams do not guarantee operation. Set the constants after performing
sufficient evaluation using the actual application.
37
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
Adjustment of Oscillation Frequency
1. Configuration of crystal oscillation circuit
Since the crystal oscillation circuit is sensitive to external noise (the clock accuracy is affected), the following measures
are essential for optimizing the configuration.
Place the S-35190A, quartz crystal, and external capacitor (Cg) as close to each other as possible.
Increase the insulation resistance between pins and the substrate wiring patterns of XIN and XOUT.
Do not place any signal or power lines close to the crystal oscillation circuit.
Locating the GND layer immediately below the crystal oscillation circuit is recommended.
Locate the bypass capacitor adjacent to the power supply pin of the S-35190A.
Parasitic capacitance*3
XIN
Rf
Cg
Quartz crystal: 32.768 kHz
CL = 6 pF*1
Cg = None*2 to 9.1 pF
Parasitic capacitance*3
Rd
XOUT
Rf = 100 M (typ.)
Rd = 100 k (typ.)
Cd = 8 pF (typ.)
Cd
S-35190A
*1. When setting the value for the quartz crystal's CL as 7 pF, connect Cd externally if necessary.
*2. The crystal oscillation circuit operates even when Cg is not connected. Note that the oscillation frequency is in the
direction that it advances.
*3. Design the board so that the parasitic capacitance is within 5 pF.
Figure 45
Connection Diagram 1
1
Quartz crystal
Cg
Figure 46
Caution
38
S-35190A
8
2 XOUT
7
3 XIN
6
4 VSS
5
Locate the GND layer in the
layer immediately below
Connection Diagram 2
1. When using the quartz crystal with a CL exceeding the rated value (7 pF) (e.g: CL = 12.5 pF), oscillation
operation may become unstable. Use a quartz crystal with a CL value of 6 pF or 7 pF.
2. Oscillation characteristics are subject to the variation of each component such as substrate parasitic
capacitance, parasitic resistance, quartz crystal, and Cg. When configuring a crystal oscillation
circuit, pay sufficient attention for them.
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
2. Measurement of oscillation frequency
When the S-35190A is turned on, the internal power-on detection circuit operates and a signal of 1 Hz is output from the
INT pin to select the quartz crystal and optimize the Cg value. Turn the power on and measure the signal with a
frequency counter following the circuit configuration shown in Figure 47.
If 1 Hz signal is not output, the power-on detection circuit does not operate normally. Turn off the power and then turn it on
again. For how to apply power, refer to " Power-on Detection Circuit and Register Status".
Remark If the error range is 1 ppm in relation to 1 Hz, the time is shifted by approximately 2.6 seconds per month
(calculated using the following expression).
10–6 (1 ppm) 60 seconds 60 minutes 24 hours 30 days = 2.592 seconds
VDD
10 kΩ
10 kΩ
XIN
SIO
SCK
Cg
S-35190A
10 kΩ
XOUT
INT
Open
Frequency
counter
CS
VSS
Figure 47
Caution
Configuration of Oscillation Frequency Measurement Circuit
1. Use a high-accuracy frequency counter of 7 digits or more.
2. Measure the oscillation frequency under the usage conditions.
3. Since the 1 Hz signal continues to be output, initialization must be executed during normal
operation.
39
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
3. Adjustment of oscillation frequency
3. 1
Adjustment by setting Cg
Matching of the quartz crystal with the nominal frequency must be performed with the parasitic capacitance on the
board included. Select a quartz crystal and optimize the Cg value in accordance with the flowchart below.
START
Select a quartz crystal*1
Variable
capacitance
YES
Trimmer capacitor
NO
Fixed capacitor
Set to center
of variable
capacitance*3
Set Cg
NO
Frequency
Cg in
specification
YES
Optimal
value*2
Change Cg
NO
NO
YES
Make fine adjustment
of frequency using
variable capacitance
YES
END
*1. Request a quartz crystal for a matching evaluation between the IC and the quartz crystal. The recommended
quartz crystal characteristic values are, CL value (load capacitance) = 6 pF, R1 value (equivalent serial resistance)
= 50 k max.
*2. The Cg value must be selected on the actual PCB since it is affected by parasitic capacitance. Select the external
Cg value in a range of 0 pF to 9.1 pF.
*3. Adjust the rotation angle of the variable capacitance so that the capacitance value is slightly smaller than the
center, and confirm the oscillation frequency and the center value of the variable capacitance. This is done in
order to make the capacitance of the center value smaller than one half of the actual capacitance value because a
smaller capacitance value increases the frequency variation.
Figure 48
Caution
40
Quartz Crystal Setting Flow
1. The oscillation frequency varies depending on the ambient temperature and power supply
voltage. Refer to " Characteristics (Typical Data)".
2. The 32.768 kHz quartz crystal operates more slowly at an operating temperature higher or lower
than20C to 25C. Therefore, it is recommended to set the oscillator to operate slightly faster
at normal temperature.
Rev.4.2_04
3-WIRE REAL-TIME CLOCK
S-35190A
Precautions
Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic
protection circuit.
ABLIC Inc. claims no responsibility for any disputes arising out of or in connection with any infringement by products
including this IC of patents owned by a third party.
41
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
Characteristics (Typical Data)
1. Standby current vs. VDD characteristics
2. Current consumption when 32.768 kHz is
output vs. VDD characteristics
Ta = 25C, CL = 6 pF
IDD1
[A]
Ta = 25C, CL = 6 pF
1.0
1.0
0.8
0.8
0.6
IDD3
[A]
0.4
0.2
0
0.6
0.4
0.2
0
1
2
3
VDD [V]
4
5
0
6
3. Current consumption during operation
vs. Input clock characteristics
0
2
1
3
VDD [V]
4
5
6
4. Standby current
vs. Temperature characteristics
Ta = 25C, CL = 6 pF
CL = 6 pF
1.0
30
0.9
25
0.8
VDD = 5.0 V
20
IDD2
[A]
0.7
0.6
IDD1
0.5
[A]
0.4
15
VDD = 3.0 V
10
0.3
0.2
5
0
VDD = 5.0 V
VDD = 3.0 V
0.1
0
200
400
600
800
SCK frequency [kHz]
0
–40 –25
1000
5. Standby current vs. Cg characteristics
0
100
0.9
80
0.8
60
0.7
40
f/f
[ppm]
VDD = 5.0 V
VDD = 5.0 V
20
0
VDD = 3.0 V
–20
–40
0.2
–60
VDD = 3.0 V
0.1
–80
0
0
42
75 85
Ta = 25C, CL = 6 pF
1.0
0.3
50
6. Oscillation frequency vs. Cg characteristics
Ta 25C, CL = 6 pF
0.6
IDD1
0.5
[A]
0.4
25
Ta [C]
2
4
6
Cg [pF]
8
10
–100
0
2
4
6
Cg [pF]
8
10
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
7. Oscillation frequency
vs. VDD characteristics
8. Oscillation frequency
vs. Temperature characteristics
Ta = 25C, Cg = 7.5 pF
Cg = 7.5 pF
50
20
40
0
30
–20
20
f/f
[ppm]
VDD 3.0 V
–40
10
f/f
–60
[ppm]
–80
0
10
20
–100
30
–120
40
50
VDD 5.0 V
0
1
2
3
4
5
6
–140
–40 –25
0
VDD [V]
9. Oscillation start time vs. Cg characteristics
25
Ta [C]
75 85
50
10. Output current characteristics 1
(VOUT vs. IOL1)
INT pin, Ta = 25C
Ta = 25C
50
500
450
40
400
350
VDD = 5.0 V
300
tSTA
250
[ms]
200
VDD = 5.0 V
150
VDD = 3.0 V
IOL1
[mA]
100
30
VDD = 3.0 V
20
10
50
0
0
2
4
6
Cg [pF]
8
10
11. Output current characteristics 2
(VOUT vs. IOL2)
0
0
1
2
VOUT [V]
50
CS pin, Ta = 25C
800
700
40
VDD = 5.0 V
600
VDD = 5.0 V
30
20
500
IIH
400
[A]
300
VDD = 3.0 V
VDD = 3.0 V
200
10
0
4
12. CS pin input current characteristics
SIO pin, Ta = 25C
IOL2
[mA]
3
100
0
0
0.5
1
1.5
VOUT [V]
2
2.5
0
1
2
3
4
VIN [V]
5
6
43
3-WIRE REAL-TIME CLOCK
S-35190A
Rev.4.2_04
13. BLD detection, release voltage, VDDT (min.)
vs. Temperature characteristics
CL = 6 pF
1.4
Release voltage
1.2
1.0
Detection voltage
0.8
BLD
[V] 0.6
VDDT (min.)
0.4
0.2
0
40 25
44
0
25
Ta [C]
50
75 85
5.02±0.2
8
5
1
4
1.27
0.20±0.05
0.4±0.05
No. FJ008-A-P-SD-2.2
TITLE
SOP8J-D-PKG Dimensions
FJ008-A-P-SD-2.2
No.
ANGLE
UNIT
mm
ABLIC Inc.
4.0±0.1(10 pitches:40.0±0.2)
2.0±0.05
ø1.55±0.05
0.3±0.05
ø2.0±0.05
8.0±0.1
2.1±0.1
6.7±0.1
1
8
4
5
Feed direction
No. FJ008-D-C-SD-1.1
TITLE
SOP8J-D-Carrier Tape
No.
FJ008-D-C-SD-1.1
ANGLE
UNIT
mm
ABLIC Inc.
60°
2±0.5
13.5±0.5
Enlarged drawing in the central part
ø21±0.8
2±0.5
ø13±0.2
No. FJ008-D-R-SD-1.1
TITLE
SOP8J-D-Reel
No.
FJ008-D-R-SD-1.1
QTY.
ANGLE
UNIT
mm
ABLIC Inc.
2,000
60°
2±0.5
13.5±0.5
Enlarged drawing in the central part
ø21±0.8
2±0.5
ø13±0.2
No. FJ008-D-R-S1-1.0
TITLE
SOP8J-D-Reel
No.
FJ008-D-R-S1-1.0
QTY.
ANGLE
UNIT
mm
ABLIC Inc.
4,000
+0.3
3.00 -0.2
8
5
1
4
0.17±0.05
0.2±0.1
0.65
No. FT008-A-P-SD-1.2
TITLE
TSSOP8-E-PKG Dimensions
No.
FT008-A-P-SD-1.2
ANGLE
UNIT
mm
ABLIC Inc.
4.0±0.1
2.0±0.05
ø1.55±0.05
0.3±0.05
+0.1
8.0±0.1
ø1.55 -0.05
(4.4)
+0.4
6.6 -0.2
1
8
4
5
Feed direction
No. FT008-E-C-SD-1.0
TITLE
TSSOP8-E-Carrier Tape
FT008-E-C-SD-1.0
No.
ANGLE
UNIT
mm
ABLIC Inc.
13.4±1.0
17.5±1.0
Enlarged drawing in the central part
ø21±0.8
2±0.5
ø13±0.5
No. FT008-E-R-SD-1.0
TITLE
TSSOP8-E-Reel
No.
FT008-E-R-SD-1.0
QTY.
ANGLE
UNIT
mm
ABLIC Inc.
3,000
13.4±1.0
17.5±1.0
Enlarged drawing in the central part
ø21±0.8
2±0.5
ø13±0.5
No. FT008-E-R-S1-1.0
TITLE
TSSOP8-E-Reel
FT008-E-R-S1-1.0
No.
QTY.
ANGLE
UNIT
mm
ABLIC Inc.
4,000
1.97±0.03
8
7
6
5
3
4
+0.05
1
0.5
2
0.08 -0.02
0.48±0.02
0.2±0.05
No. PH008-A-P-SD-2.1
TITLE
SNT-8A-A-PKG Dimensions
No.
PH008-A-P-SD-2.1
ANGLE
UNIT
mm
ABLIC Inc.
+0.1
ø1.5 -0
2.25±0.05
4.0±0.1
2.0±0.05
ø0.5±0.1
0.25±0.05
0.65±0.05
4.0±0.1
4 321
5 6 78
Feed direction
No. PH008-A-C-SD-2.0
TITLE
SNT-8A-A-Carrier Tape
No.
PH008-A-C-SD-2.0
ANGLE
UNIT
mm
ABLIC Inc.
12.5max.
9.0±0.3
Enlarged drawing in the central part
ø13±0.2
(60°)
(60°)
No. PH008-A-R-SD-1.0
TITLE
SNT-8A-A-Reel
No.
PH008-A-R-SD-1.0
QTY.
ANGLE
UNIT
mm
ABLIC Inc.
5,000
0.52
2.01
2
0.52
0.2 0.3
1.
2.
1
(0.25 mm min. / 0.30 mm typ.)
(1.96 mm ~ 2.06 mm)
1.
2.
3.
4.
0.03 mm
SNT
1. Pay attention to the land pattern width (0.25 mm min. / 0.30 mm typ.).
2. Do not widen the land pattern to the center of the package (1.96 mm to 2.06mm).
Caution 1. Do not do silkscreen printing and solder printing under the mold resin of the package.
2. The thickness of the solder resist on the wire pattern under the package should be 0.03 mm
or less from the land pattern surface.
3. Match the mask aperture size and aperture position with the land pattern.
4. Refer to "SNT Package User's Guide" for details.
1.
2.
(0.25 mm min. / 0.30 mm typ.)
(1.96 mm ~ 2.06 mm)
TITLE
No. PH008-A-L-SD-4.1
SNT-8A-A
-Land Recommendation
PH008-A-L-SD-4.1
No.
ANGLE
UNIT
mm
ABLIC Inc.
Disclaimers (Handling Precautions)
1.
All the information described herein (product data, specifications, figures, tables, programs, algorithms and
application circuit examples, etc.) is current as of publishing date of this document and is subject to change without
notice.
2.
The circuit examples and the usages described herein are for reference only, and do not guarantee the success of
any specific mass-production design.
ABLIC Inc. is not liable for any losses, damages, claims or demands caused by the reasons other than the products
described herein (hereinafter "the products") or infringement of third-party intellectual property right and any other
right due to the use of the information described herein.
3.
ABLIC Inc. is not liable for any losses, damages, claims or demands caused by the incorrect information described
herein.
4.
Be careful to use the products within their ranges described herein. Pay special attention for use to the absolute
maximum ratings, operation voltage range and electrical characteristics, etc.
ABLIC Inc. is not liable for any losses, damages, claims or demands caused by failures and / or accidents, etc. due to
the use of the products outside their specified ranges.
5.
Before using the products, confirm their applications, and the laws and regulations of the region or country where they
are used and verify suitability, safety and other factors for the intended use.
6.
When exporting the products, comply with the Foreign Exchange and Foreign Trade Act and all other export-related
laws, and follow the required procedures.
7.
The products are strictly prohibited from using, providing or exporting for the purposes of the development of
weapons of mass destruction or military use. ABLIC Inc. is not liable for any losses, damages, claims or demands
caused by any provision or export to the person or entity who intends to develop, manufacture, use or store nuclear,
biological or chemical weapons or missiles, or use any other military purposes.
8.
The products are not designed to be used as part of any device or equipment that may affect the human body, human
life, or assets (such as medical equipment, disaster prevention systems, security systems, combustion control
systems, infrastructure control systems, vehicle equipment, traffic systems, in-vehicle equipment, aviation equipment,
aerospace equipment, and nuclear-related equipment), excluding when specified for in-vehicle use or other uses by
ABLIC, Inc. Do not apply the products to the above listed devices and equipments.
ABLIC Inc. is not liable for any losses, damages, claims or demands caused by unauthorized or unspecified use of
the products.
9.
In general, semiconductor products may fail or malfunction with some probability. The user of the products should
therefore take responsibility to give thorough consideration to safety design including redundancy, fire spread
prevention measures, and malfunction prevention to prevent accidents causing injury or death, fires and social
damage, etc. that may ensue from the products' failure or malfunction.
The entire system in which the products are used must be sufficiently evaluated and judged whether the products are
allowed to apply for the system on customer's own responsibility.
10. The products are not designed to be radiation-proof. The necessary radiation measures should be taken in the
product design by the customer depending on the intended use.
11. The products do not affect human health under normal use. However, they contain chemical substances and heavy
metals and should therefore not be put in the mouth. The fracture surfaces of wafers and chips may be sharp. Be
careful when handling these with the bare hands to prevent injuries, etc.
12. When disposing of the products, comply with the laws and ordinances of the country or region where they are used.
13. The information described herein contains copyright information and know-how of ABLIC Inc. The information
described herein does not convey any license under any intellectual property rights or any other rights belonging to
ABLIC Inc. or a third party. Reproduction or copying of the information from this document or any part of this
document described herein for the purpose of disclosing it to a third-party is strictly prohibited without the express
permission of ABLIC Inc.
14. For more details on the information described herein or any other questions, please contact ABLIC Inc.'s sales
representative.
15. This Disclaimers have been delivered in a text using the Japanese language, which text, despite any translations into
the English language and the Chinese language, shall be controlling.
2.4-2019.07
www.ablic.com
工商网监
湘ICP备2023018690号
