2002 Microchip Technology Inc.
Preliminary
DS30485A-page 25
PIC18FXX39
TABLE 3-1:
TIME-OUT IN VARIOUS SITUATIONS
REGISTER 3-1:
RCON REGISTER BITS AND POSITIONS
TABLE 3-2:
STATUS BITS, THEIR SIGNIFICANCE AND THE INITIALIZATION CONDITION FOR
RCON REGISTER
Oscillator
Configuration
Power-up(2)
Brown-out
Wake-up from
SLEEP or
Oscillator Switch
PWRTE = 0
PWRTE = 1
HS with PLL enabled(1)
72 ms + 1024 TOSC
+ 2ms
1024 TOSC
+ 2 ms
72 ms(2) + 1024 TOSC
+ 2 ms
1024 TOSC + 2 ms
HS, XT, LP
72 ms + 1024 TOSC
1024 TOSC
72 ms(2) + 1024 TOSC
1024 TOSC
EC
72 ms
—
72 ms(2)
—
External RC
72 ms
—
72 ms(2)
—
Note 1: 2 ms is the nominal time required for the 4x PLL to lock.
2: 72 ms is the nominal power-up timer delay, if implemented.
R/W-0
U-0
R/W-1
R-1
R/W-0
IPEN
—
—RI
TO
PD
POR
BOR
bit 7
bit 0
Condition
Program
Counter
RCON
Register
RI
TO
PD
POR
BOR
STKFUL
STKUNF
Power-on Reset
0000h
0--1 1100
1
0
u
MCLR Reset during normal
operation
0000h
0--u uuuu
u
Software Reset during normal
operation
0000h
0--0 uuuu
0
u
Stack Full Reset during normal
operation
0000h
0--u uu11
u
1
Stack Underflow Reset during
normal operation
0000h
0--u uu11
u
1
u
MCLR Reset during SLEEP
0000h
0--u 10uu
u
1
0
u
WDT Reset
0000h
0--u 01uu
1
0
1
u
WDT Wake-up
PC + 2
u--u 00uu
u
0
u
Brown-out Reset
0000h
0--1 11u0
1
0
u
Interrupt wake-up from SLEEP
PC + 2(1)
u--u 00uu
u
1
0
u
Legend: u = unchanged, x = unknown, - = unimplemented bit, read as '0'
Note 1: When the wake-up is due to an interrupt and the GIEH or GIEL bits are set, the PC is loaded with the
interrupt vector (0x000008h or 0x000018h).
