S-19100N12H-M5T2U Datasheet, PDF (25/45 Pages) Seiko Instruments Inc – BUILT-IN DELAY CIRCUIT

FOR AUTOMOTIVE 105°C OPERATION VOLTAGE DETECTOR BUILT-IN DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.2.0_01
S-19100xxxH Series
 Application Circuit Examples
1. Microcomputer reset circuits
In microcomputers, when the power supply voltage is lower than the minimum operation voltage, an unspecified
operation may be performed or the contents of the memory register may be lost. When power supply voltage
returns to the normal level, the microcomputer needs to be initialized. Otherwise, the microcomputer may
malfunction after that. Reset circuits to protect microcomputer in the event of current being momentarily switched
off or lowered.
Using the S-19100xxxH Series which has the low minimum operation voltage, a high-accuracy detection voltage
and hysteresis, reset circuits can be easily constructed as seen in Figure 26 and Figure 27.
VDD
VDD1
VDD2
S-19100C
Microcomputer
S-19100N
Microcomputer
VSS
VSS
Figure 26 Example of Reset Circuit
(CMOS Output Product)
Figure 27 Example of Reset Circuit
(Nch Open-drain Output Product)
Caution The above connection diagram and constant will not guarantee successful operation.
Perform thorough evaluation using the actual application to set the constant.
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