S-35399A02 Datasheet, PDF (5/55 Pages) Seiko Instruments Inc – 2-WIRE REAL-TIME CLOCK

Rev.1.0_00
„ Block Diagram
XIN
XOUT
Oscillator
Divider,
timing generator
Clock correction
register
Status
register 1
Status
register 2
FOUT setting
register 1
FOUT setting
register 2
Free register
24-bit
binary
up counter
Low power
VDD
supply voltage
detector
Constant-
voltage circuit
2-WIRE REAL-TIME CLOCK
S-35399A02
32.768 kHz controller
INT1 controller
INT1 register
Alarm expansion
register 1
Comparator 1
Second Minute Hour Day of Day Month Year
week
Real-time data register
Comparator 2
INT2 register
Alarm expansion
register 2
INT2 controller
Shift register
Serial
interface
Power-on
detector
Figure 8
CTRL
F32K
VDDL
FOUT
INT1
INT2
SDA
SCL
VSS
Seiko Instruments Inc.
5