S-35199A01 Datasheet, PDF (43/54 Pages) Seiko Instruments Inc – 3-WIRE REAL-TIME CLOCK

Rev.1.0_00
„ Examples of Application Circuits
10 kΩ
VDDL
INT
VDD
CS
S-35199A01
VSS
SIO
SCK
CTRL
FOUT
XIN XOUT _F32K
C_g
3-WIRE REAL-TIME CLOCK
S-35199A01
V_CC
VCC
CPU
System power
supply
VSS
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 52 Application Circuit 1
VDDL
INT
VDD
CS
S-35199A01 _SIO
VSS
XIN
SCK
CTR
FOUTL
XOUT F32K
10 kΩ
10 kΩ
C_g
VCC
System power
supply
CPU
VSS
Caution Start communication under stable condition after power-on the power supply in the system.
Figure 53 Application Circuit 2
Caution The above connection diagrams do not guarantee operation. Set the constants after performing
sufficient evaluation using the actual application.
Seiko Instruments Inc.
43