S-35390A-J8T1G Seiko Instruments, S-35390A-J8T1G Datasheet - Page 33

• Manufacturer Part Number: S-35390A-J8T1G
• Description: IC RTC I2C 2-WIRE 8-SOP
• Manufacturer: Seiko Instruments
• Type: Clock/Calendarr

Specifications of S-35390A-J8T1G

• Time Format: HH:MM:SS (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 1.3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Other names: 728-1006-2

Rev.3.0
(4) INT1 register access and INT2 register access
In Read/Write the INT1 and INT2 registers, data varies depending on the setting of the status register 2. Be sure to
Read/Write 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.
Caution Users cannot use both functions of alarm 1 interrupt and output of user-set frequency for the
Regarding details of each data, refer to “4. INT1 register and INT2 register” in “ Configuration of Register”.
*1. 0 : INT1 register selected, 1 : INT2 register selected
*2. Set NO_ACK = 1 in Read.
*3. Transmit ACK = 0 from the master device to the S-35390A in Read.
*1. 0 : INT1 register selected, 1 : INT2 register selected
*2. Set NO_ACK = 1 in Read.
_00
Figure 42 INT1 Register and INT2 Register (Data Register for Output Frequency) Access
SDA
SCL
INT
I/O mode switching
1
pin and
SDA
SCL
0
Device code +
Figure 41 INT1 Register Access and INT2 Register Access
I/O mode switching
1
1
command
1
0
*1
INT
1
0
2
0
Device code +
1
pin simultaneously.
1
command
1
R/W
*1
0
9
B7
Day of the week
1
Seiko Instruments Inc.
0
data
R/W
I/O mode switching
9
B0
B7
Frequency
setting data
18
B7
Hour data
B0
I/O mode switching
18
B0
27
2-WIRE REAL-TIME CLOCK
B7
Minute data
B0
36
S-35390A
33