PIC16C505T-20I/SL View Datasheet(PDF) - Microchip Technology
Part Name
Description
Manufacturer
PIC16C505T-20I/SL Datasheet PDF : 85 Pages
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PIC16C505
FIGURE 7-7: SIMPLIFIED BLOCK DIAGRAM OF ON-CHIP RESET CIRCUIT
VDD
RB3/MCLR/VPP
Power-Up
Detect
POR (Power-On Reset)
Pin Change
SLEEP
Wake-up on
pin change
MCLRE
On-Chip
DRT OSC
WDT Time-out
RESET
8-bit Asynch
S
Ripple Counter
(Start-Up Timer)
R
FIGURE 7-8: TIME-OUT SEQUENCE ON POWER-UP (MCLR PULLED LOW)
Q
Q
CHIP RESET
VDD
MCLR
INTERNAL POR
TDRT
DRT TIME-OUT
INTERNAL RESET
FIGURE 7-9: TIME-OUT SEQUENCE ON POWER-UP (MCLR TIED TO VDD): FAST VDD RISE TIME
VDD
MCLR
INTERNAL POR
DRT TIME-OUT
INTERNAL RESET
TDRT
© 1999 Microchip Technology Inc.
DS40192C-page 33
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