3-WIRE REAL-TIME CLOCK
S-35190A
Rev.2.4_00
(5) Clock correction register access
CS
1
8
16
SCK
R / W
B7
X
0 1 1 0 1 1 0
SIO
B0
Fixed code +
command
Clock correction
data
During reading:
Input mode switching
During reading: Output mode switching
Figure 39 Clock Correction Register Access
(6) Free register access
CS
1
8
16
SCK
SIO
R / W
X
0 1 1 0 1 1 1
B7
B0
Fixed code +
command
Free register data
During reading:
Input mode switching
During reading: Output mode switching
Figure 40 Free Register Access
Seiko Instruments Inc.
33