Datasheet

PIC18F6525/6621/8525/8621
DS39612C-page 342  2003-2013 Microchip Technology Inc.
FIGURE 27-9: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND
POWER-UP TIMER TIMING
FIGURE 27-10: BROWN-OUT RESET TIMING
171 TalH2csL Chip Enable Active to ALE  ——10ns
171A TubL2oeH AD Valid to Chip Enable Active 0.25 TCY – 20 — — ns
Param.
No
Symbol Characteristics Min Typ Max Units
VDD
MCLR
Internal
POR
PWRT
Time-out
OSC
Time-out
Internal
Reset
Watchdog
Timer
Reset
33
32
30
31
34
I/O Pins
34
Note: Refer to Figure 27-4 for load conditions.
VDD
BVDD
35
VBGAP = 1.2V
V
IRVST
Enable Internal
Internal Reference
36
Reference Voltage
Voltage Stable