S-35399A02 Datasheet, PDF (40/55 Pages) Seiko Instruments Inc – 2-WIRE REAL-TIME CLOCK

2-WIRE REAL-TIME CLOCK
S-35399A02
Rev.1.0_00
(5) Clock-correction register access
1
9
18
SCL
SDA
R/W
0 110110
Code +
command
I/O mode switching
B7
B0
Clock
correction data
I/O mode switching
*1. Set NO_ACK = 1 in Read.
Figure 51 Clock-Correction Register Access
(6) Free register access
1
9
18
SCL
SDA
R/W
0 110111
Code +
command
I/O mode switching
B7
B0
Free register
data
I/O mode switching
*1. Set NO_ACK = 1 in Read.
Figure 52 Free Register Access
(7) Up counter access
Access to the up counter is Read-only. Users cannot Write in this counter with Write operation.
1
9
18
27
36
SCL
SDA
Read only
0 11 1 0 0 0 1
Code + command
B7
B0
Count data
B7
B0
Count data
I/O mode switching
I/O mode switching
Figure 53 Up Counter Access
40
Seiko Instruments Inc.