S-35192A-I8T1G SII [Seiko Instruments Inc], S-35192A-I8T1G Datasheet - Page 27

• Manufacturer Part Number: S-35192A-I8T1G
• Description: 3-WIRE REAL-TIME CLOCK
• Manufacturer: SII [Seiko Instruments Inc]

Rev.1.2
(4) INT register 1 access and INT register 2 access
During reading: Output mode switching
In Read/Write the INT register 1, data varies depending on the setting of the status register 2. Be sure to Read/Write
the INT register 1 after setting the status register 2. When setting the alarm by using the status register 2, these
registers work as 3-byte alarm-time data registers, in other statuses, they work as 1-byte free registers.
Read/Write the INT register 2 after setting INT2AE in the status register 2. When INT2AE is in “1”, the INT register 2
works as for setting the 3-byte alarm-time data. Regarding details of each data, refer to “ 4. INT register 1 and INT
register 2 ” in “ Configuration of Register ”.
Caution Users cannot use both functions of alarm 1 function and the free register data simultaneously.
During reading: Output mode switching
*1. 0 : INT register 1 selected
_00
1 : INT register 2 selected
SCK
SIO
CS
Figure 28 INT Register 1 Access and INT Register 2 Access
X
CS
SCK
SIO
Figure 29 INT Register 1 (Free Register Data) Access
0
Fixed code +
1
1
command
1
0
*1
X
1
0
0
Fixed code +
1
1
command
1
8
Seiko Instruments Inc.
B7
0
R / W
Day of the
week data
1
0
0
8
R/W
B7
B0
Free register data
16
B7
Hour data
16
B0
B0
24
B7
3-WIRE REAL-TIME CLOCK
Minute data
During reading:
Input mode switching
32
B0
During reading:
Input mode switching
S-35192A
27