S-35192A Datasheet, PDF (27/41 Pages) Seiko Instruments Inc – 3-WIRE REAL-TIME CLOCK

Rev.1.2_00
3-WIRE REAL-TIME CLOCK
S-35192A
(4) INT register 1 access and INT register 2 access
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.
CS
1
8
16
24
32
SCK
*1
X 011010
SIO
R/W
B7
B0 B7
B0 B7
B0
Fixed code +
command
During reading: Output mode switching
Day of the
week data
*1. 0 : INT register 1 selected
1 : INT register 2 selected
Hour data
Minute data
During reading:
Input mode switching
Figure 28 INT Register 1 Access and INT Register 2 Access
CS
1
8
16
SCK
SIO
R/W
X 0110100
B7
B0
Fixed code +
command
Free register data
During reading: Output mode switching
During reading:
Input mode switching
Figure 29 INT Register 1 (Free Register Data) Access
Seiko Instruments Inc.
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