S-35392A Datasheet, PDF (36/47 Pages) Seiko Instruments Inc – 2-WIRE REAL-TIME CLOCK

2-WIRE REAL-TIME CLOCK
S-35392A
„ Examples of Application Circuits
10 kΩ
VDD
32KO
INT2
VSS
S-35392A
SDA
SCL
10 kΩ
XIN XOUT
C_g
V_CC
VCC
CPU
VSS
Rev.1.3_00
System
power supply
Caution 1. Because the I/O pin has no protective diode on the VDD side, the relation of V_CC ≥ V_DD is possible,
but pay careful attention to the specifications.
2. Start communication under stable condition after power-on the power supply in the system.
Figure 43 Application Circuit 1
VDD
32KO
INT2
S-35392A
VSS
SDA
SCL
XIN XOUT
10 kΩ
10 kΩ
VCC
System power
supply
CPU
VSS
C_g
Caution Start communication under stable condition after power-on the power supply in the system.
Figure 44 Application Circuit 2
Caution The above connection diagrams do not guarantee operation. Set the constants after performing
sufficient evaluation using the actual application.
36
Seiko Instruments Inc.