Supply Voltage Detection (Svd) Circuit And Heavy Load Protection Function; Configuration Of Svd Circuit - Epson S1C6S3N2 Technical Manual

CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (SVD Circuit and Heavy Load Protection Function)
Configuration of
SVD circuit
SVD circuit
Fig. 4.12.1

Configuration of SVD circuit

I-80
4.12 Supply Voltage Detection (SVD) Circuit
and Heavy Load Protection Function
The S1C6S3N2 Series has a built-in supply voltage detection
(SVD) circuit, so that the software can find when the source
voltage lowers. The configuration of the SVD circuit is
shown in Figure 4.12.1.
Turning the SVD operation ON/OFF is controlled through
the software (HLMOD, BLS). Moreover, when a drop in
source voltage (BLD = "1") is detected, SVD operation is
periodically performed by the hardware until the source
voltage is recovered (BLD = "0").
Because the power current consumption of the IC becomes
big when the SVD operation is turned ON, set the SVD
operation to OFF unless otherwise necessary.
See "7 ELECTRICAL CHARACTERISTICS" for the evaluation
voltage accuracy.
V
DD
Detection output
V
SS
One-shot control
EPSON
Address 076H
BLS
BLD
HLMOD
Address 076H
Sampling at
cycles of 2 Hz
S1C6S3N2 TECHNICAL HARDWARE