3-WIRE REAL-TIME CLOCK
S-35190A
Rev.2.4_00
(2) Real-time data 2 access
CS
SCK
SIO
16
24
8
32
1
R / W
X
0 1 1 0 0 1 1
B7
B0 B7
B0 B7
B0
Fixed code +
command
Minute data
Hour data
Second data
During reading:
During reading: Output mode switching
Input mode switching
Figure 35 Real-Time Data 2 Access
(3) Status register 1 access and status register 2 access
CS
16
1
8
SCK
SIO
R / W
*1
X 0 1 1 0 0 0
B7
B0
Fixed code +
command
During reading: Output mode switching
Status data
During reading:
Input mode switching
*1. 0 : Status register 1 selected
1 : Status register 2 selected
Figure 36 Status Register 1 Access and Status Register 2 Access
Seiko Instruments Inc.
31
SII [ SEIKO INSTRUMENTS INC ]
