s-35392a Seiko Instruments Inc., s-35392a Datasheet - Page 15

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

Rev.1.3
INT2 pin output
(2) Free register (INT1 register)
(3) Output of user-set frequency (INT2 register)
The INT1 register is a 1-byte SRAM type register that can be set freely by users.
The INT2 register is a 1-byte data register to set up the output frequency. Setting each bit B7 to B3 in the register to
“1”, the frequency which corresponds to the bit is output in the AND-form. SC11 to SC13 in the INT2 register are 3-bit
SRAM type registers that can be freely set by users.
_00
Example: B7 to B3 = 50h
16 Hz
R/W
R/W
1 Hz
SC3
8 Hz
4 Hz
2 Hz
1 Hz
B7
B7
Figure 15 Example of Output from INT2 Register (Data Register for Output Frequency)
2 Hz
R/W
SC4
R/W
B6
B6
Status register 2
•
Figure 14 INT2 Register (Data Register for Output Frequency)
Set to INT2FE = 1
R/W
R/W
4 Hz
SC5
B5
B5
Figure 13 INT1 Register (Free Register)
Seiko Instruments Inc.
R/W
R/W
SC6
8 Hz
B4
B4
16 Hz
R/W
R/W
SC7
B3
B3
R/W: Read/Write
SC11
SC8
R/W
R/W
B2
B2
R/W: Read/Write
2-WIRE REAL-TIME CLOCK
SC12
SC9
R/W
R/W
B1
B1
SC10
SC13
R/W
R/W
B0
B0
S-35392A
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