s-35190a Seiko Instruments Inc., s-35190a Datasheet - Page 16

• Manufacturer Part Number: s-35190a
• Description: 3-wire Real-time Clock
• Manufacturer: Seiko Instruments Inc.

16
3-WIRE REAL-TIME CLOCK
S-35190A
INT pin output
(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.
Example: B7 to B3 = 50h
16 Hz
8 Hz
4 Hz
2 Hz
1 Hz
Figure 19 Example of Output from INT Register 1 (Data Register for Output Frequency)
1 Hz
R/W
B7
Figure 18 INT Register 1 (Data Register for Output Frequency)
2 Hz
R/W
B6
Status register 2
• Set to INT1FE = 1
4 Hz
R/W
B5
Seiko Instruments Inc.
8 Hz
R/W
B4
16 Hz
R/W
B3
SC4
R/W
B2
SC5
R/W: Read/Write
B1
R/W
SC6
R/W
B0
Rev.2.4
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