Datasheet

PIC18(L)F2X/4XK22
DS41412F-page 64  2010-2012 Microchip Technology Inc.
FIGURE 4-3: TIME-OUT SEQUENCE ON POWER-UP (MCLR TIED TO VDD, VDD RISE < TPWRT)
FIGURE 4-4: TIME-OUT SEQUENCE ON POWER-UP (MCLR
NOT TIED TO VDD): CASE 1
TABLE 4-2: TIME-OUT IN VARIOUS SITUATIONS
Oscillator
Configuration
Power-up
(2)
and Brown-out
Exit from
Power-Managed Mode
PWRTEN = 0 PWRTEN = 1
HSPLL 66 ms
(1)
+ 1024 TOSC + 2
ms
(2)
1024 TOSC + 2 ms
(2)
1024 TOSC + 2 ms
(2)
HS, XT, LP 66 ms
(1)
+ 1024 TOSC 1024 TOSC 1024 TOSC
EC, ECIO 66 ms
(1)
——
RC, RCIO 66 ms
(1)
——
INTIO1, INTIO2 66 ms
(1)
——
Note 1: 66 ms (65.5 ms) is the nominal Power-up Timer (PWRT) delay.
2: 2 ms is the nominal time required for the PLL to lock.
TPWRT
TOST
VDD
MCLR
INTERNAL POR
PWRT TIME-OUT
OST TIME-OUT
INTERNAL RESET
TPWRT
TOST
VDD
MCLR
INTERNAL POR
PWRT TIME-OUT
OST TIME-OUT
INTERNAL RESET