S3C8235 Datasheet, PDF (297/340 Pages) Samsung semiconductor – 8-BIT CMOS MICROCONTROLLERS USERS MANUAL


      




 



The S3C8238/C8235/F8235 micro-controller has a built-in VLD(Voltage Level Detector) circuit which allows
detection of power voltage drop through software. Turning the VLD operation on and off can be controlled by
software. Because the IC consumes a large amount of current during VLD operation. It is recommended that the
VLD operation should be kept OFF unless it is necessary. Also the VLD criteria voltage can be set by the software.
The criteria voltage can be set by matching to one of the 3 kinds of voltage 2.4V, 3.3V or 4.5V (VDD reference
voltage).
The VLD block works only when VLDCON.2 is set. If VDD level is lower than the reference voltage selected with
VLDCON.1-.0, VLDCON.3 will be set. If VDD level is higher, VLDCON.3 will be cleared. Please do not operate the
VLD block for minimize power current consumption.
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