s-35392a Seiko Instruments Inc., s-35392a Datasheet - Page 18

• Manufacturer Part Number: s-35392a
• Description: 2-wire Real-time Clock
• Manufacturer: Seiko Instruments Inc.

18
2-WIRE REAL-TIME CLOCK
S-35392A
Register Status After Initialization
The status of each register after initialization is as follows.
SDA
SCL
Real-time data register :
Status register 1 :
Status register 2 :
INT1 register :
INT2 register :
Clock correction register :
Free register :
Device code + command
0
1
1
1
Write to status register 1
: Input from master device
0
: Output from S-35392A
0
0
0 0
Write “1” to reset flag and SC0.
Figure 19 Status Register 1 Data at Initialization
B7 B5
R / W
1
9
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 19.)
“00h”
“00h”
“00h”
“00h”
“00h”
0
1
0
0
0
Seiko Instruments Inc.
0 0
18
0
Device code + command
0
1
1
1
Read from status register 1
0
0
0
0 1
B7 B5 : Not reset
R / W
9
L
L
H
L
L
L
L L
18
0
Rev.1.3
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