S-35399A03 Datasheet, PDF (20/51 Pages) Seiko Instruments Inc – 2-WIRE REAL-TIME CLOCK

2-WIRE REAL-TIME CLOCK
S-35399A03
Rev.1.0_00
„ Register Statuses After Initialization
The status of each register after initialization is as follows.
Real-time data register :
Status register 1 :
Status register 2 :
INT1 register :
INT2 register :
Clock correction register :
Free register 1 :
Free register 2 :
Free register 3 :
Up counter :
Alarm expansion register 1 :
Alarm expansion register 2 :
00 (Y), 01 (M), 01 (D), 0 (day of the week), 00 (H), 00 (M), 00 (S)
“0 B6 B5 B4 0 0 0 0 b”
(In B6, B5, B4, the data of B6, B5, B6 in the status register 1 at initialization is set.
Refer to Figure 21.)
“00h”
“00h”
“00h”
“00h”
“00h”
“00h”
“00h”
Is not initialized and continues counting.
“00h”
“00h”
SCL
SDA
Write to status register 1
1
9
18
Read from status register 1
1
9
18
R/W
0 11 0 0000 1 0 1 0 000 0 0
R/W
0 1 1 0 0 0 0 1 L LH LL L LL 0
Code + command _{B7 B5}
Code + comman _{B7 B5 : Not reset}
Write “1” to reset flag and SC0.
: Output from S-35399A03
: Input from master device
Figure 21 Data of Status Register 1 at Initialization
20
Seiko Instruments Inc.