Supply Voltage Detector (Svd); Outline Of The Svd Module - Epson S1C17704 Technical Manual

23 Supply Voltage Detector (SVD)

23.1 Outline of the SVD module

The S1C17704 is equipped with a supply voltage detector (SVD) to detect supply voltage drop. The SVD module
allows software to turn the circuit on and off, to set an evaluate voltage level and to read the detection results. Also
it can generate an interrupt when voltage drop has been detected.
Figure 23.1.1 shows the structure of the SVD module.
OSC1 clock
V
DD
To ITC
S1C17704 TECHNICAL MANUAL
SVD enable
Compare
SVDC[3:0] voltage
setup circuit
Interrupt enable
Figure 23.1.1 Structure of SVD Module
EPSON
23 SUPPLY VOLTAGE DETECTOR (SVD)
SVDEN
Detection
Voltage
comparator
SVDDT
SVDIE Interrupt
control circuit
SVD interrupt request
SVD
result
23-1