S-80830C Datasheet, PDF (32/54 Pages) Seiko Instruments Inc – ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR

ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-808xxC Series
Rev.3.2_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 23 Measurement Condition for Response Time Figure 24 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 25 to 26 can be easily constructed with the help of the S-808xxC series,
that has low operating voltage, a high-precision detection voltage and hysteresis.
VDD1
VDD2
VDD
S-
808xxCL
Microcomputer
S-
808xxCN
Microcomputer
VSS
VSS
(Only for Nch open-drain products)
Figure 25 Reset Circuit Example(S-808xxCL)
Figure 26 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.
32
Seiko Instruments Inc.