S-35392A Datasheet, PDF (4/47 Pages) Seiko Instruments Inc – 2-WIRE REAL-TIME CLOCK

2-WIRE REAL-TIME CLOCK
S-35392A
„ Block Diagram
Rev.1.3_00
XIN
XOUT
Oscillator
Divider,
timing generator
Clock correction register
Status register 1
Status register 2
Free register
Low power supply
VDD
voltage detector
Power-on
detector
Constant-
voltage circuit
VSS
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
Figure 5
32KO
INT2
SDA
SCL
4
Seiko Instruments Inc.