PIC16C55X(A)
FIGURE 7-11: EXTERNAL POWER-ON
RESET CIRCUIT (FOR SLOW
VDD POWER-UP)
VDD
VDD
D
R
R1
MCLR
PIC16C55X(A)
C
Note 1: External power-on reset circuit is required
only if VDD power-up slope is too slow.
The diode D helps discharge the capaci-
tor quickly when VDD powers down.
2: < 40 kΩ is recommended to make sure
that voltage drop across R does not vio-
late the device’s electrical specification.
3: R1 = 100Ω to 1 kΩ will limit any current
flowing into MCLR from external capaci-
tor C in the event of MCLR/VPP pin break-
down due to Electrostatic Discharge
(ESD) or Electrical Overstress (EOS).
DS40143B-page 44
Preliminary
1997 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
