
2004 Microchip Technology Inc.
Preliminary
DS39637A-page 49
PIC18F2480/2580/4480/4580
TABLE 4-4:
INITIALIZATION CONDITIONS FOR ALL REGISTERS
Register
Applicable Devices
Power-on Reset,
Brown-out Reset
MCLR Resets,
WDT Reset,
RESET
Instruction,
Stack Resets
Wake-up via WDT
or Interrupt
TOSU
TOSH
TOSL
STKPTR
PCLATU
PCLATH
PCL
TBLPTRU
TBLPTRH
TBLPTRL
TABLAT
PRODH
PRODL
INTCON
INTCON2
INTCON3
INDF0
POSTINC0
POSTDEC0
PREINC0
PLUSW0
FSR0H
FSR0L
WREG
INDF1
POSTINC1
POSTDEC1
PREINC1
PLUSW1
FSR1H
FSR1L
Legend:
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
2480 2580 4480 4580
u
= unchanged,
x
= unknown,
-
= unimplemented bit, read as ‘
0
’,
q
= value depends on condition.
Shaded cells indicate conditions do not apply for the designated device.
One or more bits in the INTCONx or PIRx registers will be affected (to cause wake-up).
When the wake-up is due to an interrupt and the GIEL or GIEH bit is set, the PC is loaded with the interrupt
vector (0008h or 0018h).
When the wake-up is due to an interrupt and the GIEL or GIEH bit is set, the TOSU, TOSH and TOSL are
updated with the current value of the PC. The STKPTR is modified to point to the next location in the
hardware stack.
See Table 4-3 for Reset value for specific condition.
Bits 6 and 7 of PORTA, LATA and TRISA are enabled, depending on the oscillator mode selected. When
not enabled as PORTA pins, they are disabled and read ‘
0
’.
This register reads all ‘
0
’s until ECAN technology is set up in Mode 1 or Mode 2.
---0 0000
---0 0000
---0 uuuu
(3)
uuuu uuuu
(3)
uuuu uuuu
(3)
uu-u uuuu
(3)
0000 0000
0000 0000
0000 0000
00-0 0000
0000 0000
uu-0 0000
---0 0000
---0 0000
---u uuuu
0000 0000
0000 0000
0000 0000
0000 0000
uuuu uuuu
PC + 2
(2)
--00 0000
--00 0000
--uu uuuu
0000 0000
0000 0000
0000 0000
0000 0000
uuuu uuuu
uuuu uuuu
0000 0000
0000 0000
uuuu uuuu
xxxx xxxx
xxxx xxxx
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
(1)
uuuu -u-u
(1)
uu-u u-uu
(1)
N/A
N/A
N/A
N/A
N/A
0000 000x
0000 000u
1111 -1-1
11-0 0-00
N/A
N/A
N/A
N/A
N/A
1111 -1-1
11-0 0-00
N/A
N/A
N/A
N/A
N/A
---- 0000
---- 0000
---- uuuu
xxxx xxxx
uuuu uuuu
uuuu uuuu
xxxx xxxx
N/A
N/A
N/A
N/A
N/A
uuuu uuuu
N/A
N/A
N/A
N/A
N/A
uuuu uuuu
N/A
N/A
N/A
N/A
N/A
---- 0000
xxxx xxxx
---- 0000
uuuu uuuu
---- uuuu
uuuu uuuu
Note 1:
2:
3:
4:
5:
6: