© 1999 Scenix Semiconductor, Inc. All rights reserved. - 26 - www.scenix.com SX18AC  / SX20AC / SX28AC MCLR  pin   breakdown   due  to   Electrostatic   Discharge
(ESD) or Electrical Overstress (EOS). 13.0    BROWN-OUT DETECTOR The   on-chip   brown-out   detection   circuitry   resets   the
device when V_dd dips below the specified brown-out volt-
age.  The  device  is  held  in  reset  as  long  as  V_dd  stays
below the brown-out voltage. The device will come out of
reset when V_dd rises above the brown-out voltage. The
brown-out  level  is  preset  to  approximately  4.2V  at  the
factory.  The  brown-out  circuit  can  be  disabled  through
BOR0 and BOR1 bits contained in the FUSEX Word reg-
ister. Figure 12-5. External Power-On Reset Circuit (For Slow V_dd Power-up) V_dd R C MCLR D R1