s-35399a02 Seiko Instruments Inc., s-35399a02 Datasheet - Page 17

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

Rev.1.0
INT2 pin output
(2) Output of user-set frequency
The INT1 and INT2 registers are 1-byte data registers 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. SC2 to SC4 in the INT1 register,
and SC5 to SC7 in the INT2 register are 3-bit SRAM type registers that can be freely set by users.
INT1 pin or
_00
Example: B7 to B3 = 50h
R / W
16 Hz
1 Hz
1 Hz
R/W
8 Hz
4 Hz
2 Hz
1 Hz
B7
B7
Figure 18 Example of output from INT1 register (Data register for output frequency)
R / W
2 Hz
2 Hz
R/W
B6
B6
Status register 2
•
Set to INT1FE or INT2FE = 1
Figure 16 INT1 Register (Data register for output frequency)
Figure 17 INT2 Register (Data register for output frequency)
R / W
R/W
4 Hz
4 Hz
B5
B5
R / W
8 Hz
8 Hz
R/W
Seiko Instruments Inc.
B4
B4
R / W
16 Hz
16 Hz
R/W
B3
B3
R/W: Read/Write
R / W
SC2
SC5
R/W
B2
B2
R/W: Read/Write
2-WIRE REAL-TIME CLOCK
R / W
SC3
SC6
R/W
B1
B1
R / W
R/W
SC4
SC7
B0
B0
S-35399A02
17