PIC18F2450/4450
DS39760A-page 50
Advance Information
2006 Microchip Technology Inc.
INDF2
2450
4450
N/A
POSTINC2
2450
4450
N/A
POSTDEC2
2450
4450
N/A
PREINC2
2450
4450
N/A
PLUSW2
2450
4450
N/A
FSR2H
2450
4450
---- 0000
---- uuuu
FSR2L
2450
4450
xxxx xxxx
uuuu uuuu
STATUS
2450
4450
---x xxxx
---u uuuu
TMR0H
2450
4450
0000 0000
uuuu uuuu
TMR0L
2450
4450
xxxx xxxx
uuuu uuuu
T0CON
2450
4450
1111 1111
uuuu uuuu
OSCCON
2450
4450
0--- q-00
0--- 0-q0
u--- u-qu
HLVDCON
2450
4450
0-00 0101
u-uu uuuu
WDTCON
2450
4450
---- ---0
---- ---u
RCON(4)
2450
4450
0q-1 11q0
0q-q qquu
uq-u qquu
TMR1H
2450
4450
xxxx xxxx
uuuu uuuu
TMR1L
2450
4450
xxxx xxxx
uuuu uuuu
T1CON
2450
4450
0000 0000
u0uu uuuu
uuuu uuuu
TMR2
2450
4450
0000 0000
uuuu uuuu
PR2
2450
4450
1111 1111
T2CON
2450
4450
-000 0000
-uuu uuuu
ADRESH
2450
4450
xxxx xxxx
uuuu uuuu
ADRESL
2450
4450
xxxx xxxx
uuuu uuuu
ADCON0
2450
4450
--00 0000
--uu uuuu
ADCON1
2450
4450
--00 qqqq
--uu uuuu
ADCON2
2450
4450
0-00 0000
u-uu uuuu
CCPR1H
2450
4450
xxxx xxxx
uuuu uuuu
CCPR1L
2450
4450
xxxx xxxx
uuuu uuuu
CCP1CON
2450
4450
--00 0000
--uu uuuu
SPBRG
2450
4450
0000 0000
uuuu uuuu
RCREG
2450
4450
0000 0000
uuuu uuuu
TXREG
2450
4450
0000 0000
uuuu uuuu
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
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’.
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