S-35192A Datasheet, PDF (30/41 Pages) Seiko Instruments Inc – 3-WIRE REAL-TIME CLOCK

3-WIRE REAL-TIME CLOCK
S-35192A
„ Examples of Application Circuits
10 kΩ
VDD
32KO
CS
S-35192A
VSS
SIO
SCK
XIN XOUT
V_CC
VCC
CPU
VSS
Rev.1.2_00
System
power supply
C_g
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 33 Application Circuit 1
VDD
32KO
CS
S-35192A
VSS
SIO
SCK
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 34 Application Circuit 2
Caution The above connection diagrams do not guarantee operation. Set the constants after performing
sufficient evaluation using the actual application.
30
Seiko Instruments Inc.