PIC18F2220 Datasheet, PDF (53/388 Pages) Microchip Technology – 28/40/44-Pin High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

PIC18F2220/2320/4220/4320
FIGURE 4-6:
SLOW RISE TIME (MCLR TIED TO VDD, VDD RISE > TPWRT)
5V
VDD
0V
1V
MCLR
Internal POR
TPWRT
PWRT Time-out
TOST
OST Time-out
Internal Reset
FIGURE 4-7:
TIME-OUT SEQUENCE ON POR W/ PLL ENABLED (MCLR TIED TO VDD)
VDD
MCLR
Internal POR
PWRT Time-out
OST Time-out
TPWRT
TOST
TPLL
PLL Time-out
Internal Reset
Note:
TOST = 1024 clock cycles.
TPLL ≈ 2 ms max. First three stages of the PWRT timer.
 2003 Microchip Technology Inc.
DS39599C-page 51