3-WIRE REAL-TIME CLOCK
S-35190A
Rev.2.4_00
(2) Output of user-set frequency
The INT register 1 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. SC4 to SC6 is 3-bit SRAM type registers
that can be freely set by users.
B6
B5
B4
B3
B2
B1
B0
B7
16 Hz
R/W
SC4
R/W
SC5
R/W
SC6
R/W
1 Hz
R/W
2 Hz
R/W
4 Hz
R/W
8 Hz
R/W
R/W: Read/Write
Figure 18 INT Register 1 (Data Register for Output Frequency)
Example: B7 to B3 = 50h
16 Hz
8 Hz
4 Hz
2 Hz
1 Hz
INT pin output
Status register 2
• Set to INT1FE = 1
Figure 19 Example of Output from INT Register 1 (Data Register for Output Frequency)
16
Seiko Instruments Inc.
SII [ SEIKO INSTRUMENTS INC ]
