s-35399a02 Seiko Instruments Inc., s-35399a02 Datasheet - Page 11

• Manufacturer Part Number: s-35399a02
• Description: 2-wire Real-time Clock
• Manufacturer: Seiko Instruments Inc.

*1. Write-only flag. The S-35399A02 initializes by writing “1” in this register.
*2. Scratch bit. A R/W-enabled, user-free register.
*3. Read-only flag. Valid only when using the alarm function. When the alarm time matches, this flag is set to “1”, and it is
*4. Read-only flag. “POC” is set to “1” when power is applied. It is cleared to “0” when Read. Regarding “BLD”, refer to “
*5. Test bit for SII. Be sure to set “0” in use.
*6. No effect by Write. It is “0” when Read.
*7. The up counter is a Read-only register.
Rev.1.0
Code
0110
0111
2. Configuration of command
cleared to “0” when Read.
Low Power Supply Voltage Detection Circuit ”.
13 types of command are available for the S-35399A02, The S-35399A02 does Read/Write the various registers by
inputting these codes and commands. The S-35399A02 does not perform any operation with any codes and commands
other than those below.
C2 C1 C0
0
0
0
0
1
1
1
1
0
0
0
1
1
_00
0
0
1
1
0
0
1
1
0
0
1
0
0
0
1
0
1
0
1
0
1
0
1
0
0
1
Status register 1 access
Status register 2 access
Real-time data 1 access
(year data to)
Real-time data 2 access
(hour data to)
INT1 register access
(alarm time 1: week/hour/minute)
(INT1AE = 1, INT1ME = 0,
INT1FE = 0)
INT1 register access
(output of user-set frequency)
(INT1ME = 0, INT1FE = 1)
INT2 register access
(alarm time 2: week/hour/minute)
(INT2AE = 1, INT2ME = 0,
INT2FE = 0)
INT2 register access
(output of user-set frequency)
(INT2ME = 0, INT2FE = 1)
Clock correction register access
Free register access
Up counter access
FOUT setting register 1 access
FOUT setting register 2 access
Alarm expansion register 1 access
(alarm time 1 : year/month/day)
Alarm expansion register 2 access
(alarm time 2 : year/month/day)
Command
Description
*7
Table 9 List of Command
Seiko Instruments Inc.
RESET
256 Hz 512 Hz 1 kHz
INT1FE INT1ME INT1AE
C64k
C256
1 Hz
1 Hz
1 Hz
W1
W1
W1
M1
m1
m1
m1
m1
M1
M1
B7
Y1
D1
H1
H1
H1
H1
V0
C1
Y1
D1
Y1
D1
F0
s1
s1
*1
C128k
12
C512
2 Hz
2 Hz
2 Hz
W2
W2
W2
M2
m2
m2
m2
m2
M2
M2
B6
Y2
D2
H2
H2
H2
H2
V1
C2
Y2
D2
Y2
D2
F1
s2
s2
/
24
C256k
SC0
4 Hz
4 Hz
4 Hz
C1k
W4
W4
W4
M4
m4
m4
m4
m4
M4
M4
B5
Y4
D4
H4
H4
H4
H4
V2
C4
Y4
D4
Y4
D4
F2
s4
s4
*2
C512k
SC1
2 kHz
32kE
8 Hz
8 Hz
8 Hz
C2k
M8
m8
m8
m8
m8
M8
M8
B4
Y8
D8
−
H8
H8
−
H8
−
H8
V3
C8
Y8
D8
Y8
D8
F3
s8
s8
2-WIRE REAL-TIME CLOCK
*6
*6
*6
*2
Data
INT2FE INT2ME INT2AE TEST
INT1
16 Hz
16 Hz
16 Hz
4 kHz
C1M
M10
m10
m10
m10
m10
M10
M10
Y10
D10
H10
H10
H10
H10
C4k
C16
Y10
D10
Y10
D10
s10
s10
B3
−
−
−
V4
F4
*6
*6
*6
*3
SC2
SC5
INT2
32 Hz
8 kHz 16 kHz 32 kHz
C2M
m20
m20
m20
m20
Y20
D20
H20
H20
H20
H20
C8k
C32
Y20
D20
Y20
D20
s20
s20
B2
−
−
−
−
V5
F5
−
−
*6
*6
*6
*6
*6
*6
*3
*2
*2
S-35399A02
AM
AM
AM
AM
SC3
SC6
64 Hz 128 Hz
BLD
A1YE
A2YE
C16k
C4M
m40
m40
m40
m40
Y40
C64
Y40
Y40
s40
s40
−
−
−
−
−
V6
−
−
B1
F6
/
/
/
/
*6
*6
*6
*6
*6
*6
*6
PM
PM
PM
PM
*4
*2
*2
POC
A1WE
SC4
A2WE
SC7
A1mE
A2mE
A1ME
A2ME
A1HE
A2HE
A1DE
A2DE
C128
C32k
C8M
Y80
Y80
Y80
B0
−
−
−
−
−
−
−
−
−
V7
F7
*6
*6
*6
*6
*6
*6
*6
*6
*6
*4
*2
*2
*5
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