S-35390A Datasheet, PDF (4/54 Pages) Seiko Instruments Inc – 2-WIRE REAL-TIME CLOCK

2-WIRE REAL-TIME CLOCK
S-35390A
„ Block Diagram
Rev.2.4_00
XIN
XOUT
Oscillator
Diviver,
timing generator
VDD
VSS
Clock correction register
Status register 1
Status register 2
Free register
Low power supply
voltage detector
Power-on
detector
Constant-voltage
circuit
INT1 register
INT1
controller
Comparator 1
Real-time data register
Second Minute Hour ^{Day of} Day Month Year
the week
Comparator 2
INT2 register
Shift register
INT2
controller
Serial
interface
INT1
INT2
SDA
SCL
Figure 7
4
Seiko Instruments Inc.