S-35399A02 Datasheet, PDF (41/55 Pages) Seiko Instruments Inc – 2-WIRE REAL-TIME CLOCK

Rev.1.0_00
2-WIRE REAL-TIME CLOCK
S-35399A02
(8) FOUT setting register 1 access and FOUT setting register 2 access
1
9
18
SCL
SDA
*1
R/W
0 1110a b
Code +
command
I/O mode switching
B7
B0
FOUT
setting data
I/O mode switching
*1 To select register, use the following settings.
a
b
Register to select
0
1
FOUT setting register 1
1
0
FOUT setting register 2
*2. Set NO_ACK = 1 in Read.
Figure 54 FOUT Setting Register 1 Access and FOUT Setting Register 2 Access
(9) Alarm expansion register 1 access and alarm expansion register 2 access
Write in the alarm expansion register 1 (alarm expansion register 2) after setting the status register 2.
1
9
18
27
36
SCL
SDA
*1
R/W
0 1111 0
Code +
command
I/O mode switching
B7
B0 B7
B0 _B7
B0
Year data
Month data
Second data
I/O mode switching
*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.
Figure 55 Alarm Expansion Register 1 Access and Alarm Expansion Register 2 Access
Seiko Instruments Inc.
41