s-35399a02 Seiko Instruments Inc., s-35399a02 Datasheet - Page 41

• Manufacturer Part Number: s-35399a02
• Description: 2-wire Real-time Clock
• Manufacturer: Seiko Instruments Inc.

Rev.1.0
(8) FOUT setting register 1 access and FOUT setting register 2 access
(9) Alarm expansion register 1 access and alarm expansion register 2 access
*1. 0 : Alarm expansion register 1 access, 1 : Alarm expansion register 2 access
*2. Transmit ACK = 0 from the master device to the S-35399A02 in Read.
*3. Set NO_ACK = 1 in Read.
Write in the alarm expansion register 1 (alarm expansion register 2) after setting the status register 2.
_00
Figure 55 Alarm Expansion Register 1 Access and Alarm Expansion Register 2 Access
SDA
SCL
Figure 54 FOUT Setting Register 1 Access and FOUT Setting Register 2 Access
I/O mode switching
SCL
SDA
0
1
1
I/O mode switching
command
Code +
1
1
*1
1
*1 To select register, use the following settings.
*2. Set NO_ACK = 1 in Read.
0
a
0
1
0
1
1
command
Code +
1
R/W
*1
9
1
b
1
0
B7
Seiko Instruments Inc.
0
Year data
a b
FOUT setting register 1
FOUT setting register 2
R/W
I/O mode switching
B0
9
Register to select
B7
FOUT
setting data
18
B7
Month data
B0
I/O mode switching
18
B0
2-WIRE REAL-TIME CLOCK
27
B7
Second data
B0
36
S-35399A02
41