PIC18F2455_07 Datasheet, PDF (54/430 Pages) Microchip Technology – 28/40/44-Pin, High Performance, Enhanced Flash, USB Microcontrollers with nanoWatt Technology

PIC18F2455/2550/4455/4550
TABLE 4-4: INITIALIZATION CONDITIONS FOR ALL REGISTERS (CONTINUED)
Register
Applicable Devices
Power-on Reset,
Brown-out Reset
MCLR Resets,
WDT Reset,
RESET Instruction,
Stack Resets
Wake-up via WDT
or Interrupt
INDF2
2455 2550 4455 4550
N/A
N/A
N/A
POSTINC2 2455 2550 4455 4550
N/A
N/A
N/A
POSTDEC2 2455 2550 4455 4550
N/A
N/A
N/A
PREINC2
2455 2550 4455 4550
N/A
N/A
N/A
PLUSW2
2455 2550 4455 4550
N/A
N/A
N/A
FSR2H
2455 2550 4455 4550
---- 0000
---- 0000
---- uuuu
FSR2L
2455 2550 4455 4550
xxxx xxxx
uuuu uuuu
uuuu uuuu
STATUS
2455 2550 4455 4550
---x xxxx
---u uuuu
---u uuuu
TMR0H
2455 2550 4455 4550
0000 0000
0000 0000
uuuu uuuu
TMR0L
2455 2550 4455 4550
xxxx xxxx
uuuu uuuu
uuuu uuuu
T0CON
2455 2550 4455 4550
1111 1111
1111 1111
uuuu uuuu
OSCCON
2455 2550 4455 4550
0100 q000
0100 00q0
uuuu uuqu
HLVDCON 2455 2550 4455 4550
0-00 0101
0-00 0101
u-uu uuuu
WDTCON
RCON⁽⁴⁾
2455 2550 4455 4550
2455 2550 4455 4550
---- ---0
0q-1 11q0
---- ---0
0q-q qquu
---- ---u
uq-u qquu
TMR1H
2455 2550 4455 4550
xxxx xxxx
uuuu uuuu
uuuu uuuu
TMR1L
2455 2550 4455 4550
xxxx xxxx
uuuu uuuu
uuuu uuuu
T1CON
2455 2550 4455 4550
0000 0000
u0uu uuuu
uuuu uuuu
TMR2
2455 2550 4455 4550
0000 0000
0000 0000
uuuu uuuu
PR2
2455 2550 4455 4550
1111 1111
1111 1111
1111 1111
T2CON
2455 2550 4455 4550
-000 0000
-000 0000
-uuu uuuu
SSPBUF
2455 2550 4455 4550
xxxx xxxx
uuuu uuuu
uuuu uuuu
SSPADD
2455 2550 4455 4550
0000 0000
0000 0000
uuuu uuuu
SSPSTAT
2455 2550 4455 4550
0000 0000
0000 0000
uuuu uuuu
SSPCON1 2455 2550 4455 4550
0000 0000
0000 0000
uuuu uuuu
SSPCON2 2455 2550 4455 4550
0000 0000
0000 0000
uuuu uuuu
ADRESH
2455 2550 4455 4550
xxxx xxxx
uuuu uuuu
uuuu uuuu
ADRESL
2455 2550 4455 4550
xxxx xxxx
uuuu uuuu
uuuu uuuu
ADCON0
2455 2550 4455 4550
--00 0000
--00 0000
--uu uuuu
ADCON1
2455 2550 4455 4550
--00 0qqq
--00 0qqq
--uu uuuu
ADCON2
2455 2550 4455 4550
0-00 0000
0-00 0000
u-uu uuuu
Legend: 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.
Note 1: 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.
2: One or more bits in the INTCONx or PIRx registers will be affected (to cause wake-up).
3: 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).
4: See Table 4-3 for Reset value for specific condition.
5: PORTA<6>, LATA<6> and TRISA<6> are enabled depending on the oscillator mode selected. When not
enabled as PORTA pins, they are disabled and read ‘0’.
DS39632D-page 52
Preliminary
© 2007 Microchip Technology Inc.