Datasheet

PIC18F6520/8520/6620/8620/6720/8720
DS39609B-page 38  2004 Microchip Technology Inc.
FIGURE 3-6: SLOW RISE TIME (MCLR TIED TO VDD VIA 1 kΩ RESISTOR)
FIGURE 3-7: TIME-OUT SEQUENCE ON POR W/PLL ENABLED
(MCLR
TIED TO VDD VIA 1 kΩ RESISTOR)
VDD
MCLR
INTERNAL POR
PWRT TIME-OUT
OST TIME-OUT
INTERNAL RESET
0V
5V
T
PWRT
TOST
TPWRT
TOST
VDD
MCLR
IINTERNAL POR
PWRT TIME-OUT
OST TIME-OUT
INTERNAL RESET
PLL TIME-OUT
TPLL
Note: TOST = 1024 clock cycles.
T
PLL ≈ 2 ms max. First three stages of the PWRT timer.