s-35399a03 Seiko Instruments Inc., s-35399a03 Datasheet - Page 9

• Manufacturer Part Number: s-35399a03
• Description: 2-wire Real-time Clock
• Manufacturer: Seiko Instruments Inc.

*1. Write-only flag. The S-35399A03 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-35399A03, The S-35399A03 does Read/Write the various registers by
inputting these codes and commands. The S-35399A03 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 1 access
Up counter access
Free register 2 access
Free register 3 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 Command List
Seiko Instruments Inc.
RESET
INT1FE INT1ME INT1AE
C64k
C256
1 Hz
1 Hz
F10
F20
F30
W1
W1
W1
M1
m1
m1
m1
m1
M1
M1
B7
Y1
D1
H1
H1
H1
H1
V0
C1
Y1
D1
Y1
D1
s1
s1
*1
C128k
12
C512
2 Hz
2 Hz
F21
F31
F11
W2
W2
W2
M2
m2
m2
m2
m2
M2
M2
B6
Y2
D2
H2
H2
H2
H2
V1
C2
Y2
D2
Y2
D2
s2
s2
/
24
C256k
SC0
4 Hz
4 Hz
F12
C1k
F22
F32
W4
W4
W4
M4
m4
m4
m4
m4
M4
M4
B5
Y4
D4
H4
H4
H4
H4
V2
C4
Y4
D4
Y4
D4
s4
s4
*2
C512k
SC1
32kE
8 Hz
8 Hz
F13
C2k
F23
F33
M8
m8
m8
m8
m8
M8
M8
B4
Y8
D8
−
H8
H8
−
H8
−
H8
V3
C8
Y8
D8
Y8
D8
s8
s8
2-WIRE REAL-TIME CLOCK
*6
*6
*6
*2
Data
INT2FE INT2ME INT2AE TEST
INT1
16 Hz
16 Hz
C1M
M10
m10
m10
m10
m10
M10
M10
Y10
D10
H10
H10
H10
H10
C4k
C16
Y10
D10
Y10
D10
F14
F24
F34
s10
s10
B3
−
−
−
V4
*6
*6
*6
*3
SC2
SC5
INT2
C2M
m20
m20
m20
m20
Y20
D20
H20
H20
H20
H20
C8k
C32
Y20
D20
Y20
D20
F15
F25
F35
s20
s20
B2
−
−
−
−
V5
−
−
*6
*6
*6
*6
*6
*6
*3
*2
*2
S-35399A03
AM
AM
AM
AM
SC3
SC6
BLD
A1YE
A2YE
C16k
C4M
m40
m40
m40
m40
Y40
C64
Y40
Y40
F16
F26
F36
s40
s40
−
−
−
−
−
V6
−
−
B1
/
/
/
/
*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
C32k
C128
C8M
Y80
F17
F27
F37
Y80
Y80
B0
−
−
−
−
−
−
−
−
−
V7
*6
*6
*6
*6
*6
*6
*6
*6
*6
*4
*2
*2
*5
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