S-808XXC Datasheet, PDF (34/58 Pages) Seiko Instruments Inc – SUPER-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR

SUPER-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-808xxC Series
Rev.4.3_00
1 µs
V_IH
Input voltagae
V_IL
t_pHL
V_DD
Output voltage
1 µs
t_pLH
VDD
R^*1
V_DD
S-808xxC OUT
100 kΩ
V Series
VSS
C_OUT
V
V_DD×90 % _{*1. R is unnecessary for CMOS output products.}
V_DD×10 %
V_IH=10 V, V_IL=0.95 V
Figure 25 Measurement Condition for Response Time Figure 26 Measurement Circuit for Response Time
Caution The above connection diagram and constants do not guarantee correct operation. Perform
sufficient evaluation using the actual application to set the constants.
„ Application Circuit Examples
1. Microcomputer Reset Circuits
If the power supply voltage to a microcomputer falls below the specified level, an unspecified operation may
be performed or the contents of the memory register may be lost. When power supply voltage returns to
normal, the microcomputer needs to be initialized before normal operations can be done.
Reset circuits protect microcomputers in the event of current being momentarily switched off or lowered.
Reset circuits shown in Figures 27 to 28 can be easily constructed with the help of the S-808xxC series,
that has low operating voltage, a high-precision detection voltage and hysteresis.
VDD
S-
808xxCL
Microcomputer
VDD1
VDD2
S-
808xxCN
Microcomputer
VSS
VSS
Figure 27 Reset Circuit Example(S-808xxCL)
(Only for Nch open-drain products)
Figure 28 Reset Circuit Example (S-808xxCN)
Caution The above connection diagram and constants do not guarantee correct operation. Perform
sufficient evaluation using the actual application to set the constants.
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Seiko Instruments Inc.