S-35390A-I8T1G Seiko Instruments, S-35390A-I8T1G Datasheet - Page 31

• Manufacturer Part Number: S-35390A-I8T1G
• Description: IC REAL TIME CLOCK 2WIRE SNT-8A
• Manufacturer: Seiko Instruments
• Type: Clock/Calendarr

Specifications of S-35390A-I8T1G

• 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: SNT-8A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Other names: 728-1059-2; S-35390A-I8T1G

Rev.3.0
(2) Data Write in S-35390A
After detecting a start condition, S-35390A receives device code and command. The S-35390A enters the
Write-data mode by the Read/Write bit “0”. Input data from B7 to B0 in 1-byte. The S-35390A outputs an
acknowledgment signal (“L”) every moment that 1-byte data is input. After receiving the acknowledgment signal
which is for the last byte-data, input a stop condition to the S-35390A to finish access.
_00
SDA
SCL
3-byte data
Device code + command
: Output from S-35390A
: Input from master device
0
Figure 36 Example of Data Write 1 (1-Byte Data Register)
1
Figure 37 Example of Data Read 2 (3-Byte Data Register)
1
SDA
1
SCL
1-byte data
0
0
Device code + command
1
1 0
: Output from S-35390A
: Input from master device
R/W
0
B7
9
1
1
Seiko Instruments Inc.
1
0
0
0
0 0
B0
R/W
B7
18
B7
9
B0
B0
18
B7
2-WIRE REAL-TIME CLOCK
27
B0
36
S-35390A
31