Datasheet

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PIC18F2X1X/4X1X

TABLE 4-4: INITIALIZATION CONDITIONS FOR ALL REGISTERS

Power-on Reset,

Brown-out

Reset

MCLR

Resets,

WDT Reset,

RESET

Instruction,

Stack Resets

Wake-up via

WDT

or Interrupt

TOSU 2410 2510 2515 2610 4410 4510 4515 4610 ---0 0000 ---0 0000 ---0 uuuu

(3)

TOSH 2410 2510 2515 2610 4410 4510 4515 4610 0000 0000 0000 0000 uuuu uuuu

(3)

TOSL 2410 2510 2515 2610 4410 4510 4515 4610 0000 0000 0000 0000 uuuu uuuu

(3)

STKPTR 2410 2510 2515 2610 4410 4510 4515 4610 00-0 0000 uu-0 0000 uu-u uuuu

(3)

PCLATU 2410 2510 2515 2610 4410 4510 4515 4610 ---0 0000 ---0 0000 ---u uuuu

PCLATH 2410 2510 2515 2610 4410 4510 4515 4610 0000 0000 0000 0000 uuuu uuuu

PCL 2410 2510 2515 2610 4410 4510 4515 4610 0000 0000 0000 0000 PC + 2

(2)

TBLPTRU 2410 2510 2515 2610 4410 4510 4515 4610 --00 0000 --00 0000 --uu uuuu

TBLPTRH 2410 2510 2515 2610 4410 4510 4515 4610 0000 0000 0000 0000 uuuu uuuu

TBLPTRL 2410 2510 2515 2610 4410 4510 4515 4610 0000 0000 0000 0000 uuuu uuuu

TABLAT 2410 2510 2515 2610 4410 4510 4515 4610 0000 0000 0000 0000 uuuu uuuu

PRODH 2410 2510 2515 2610 4410 4510 4515 4610 xxxx xxxx uuuu uuuu uuuu uuuu

PRODL 2410 2510 2515 2610 4410 4510 4515 4610 xxxx xxxx uuuu uuuu uuuu uuuu

INTCON 2410 2510 2515 2610 4410 4510 4515 4610 0000 000x 0000 000u uuuu uuuu

(1)

INTCON2 2410 2510 2515 2610 4410 4510 4515 4610 1111 -1-1 1111 -1-1 uuuu -u-u

(1)

INTCON3 2410 2510 2515 2610 4410 4510 4515 4610 11-0 0-00 11-0 0-00 uu-u u-uu

(1)

INDF0 2410 2510 2515 2610 4410 4510 4515 4610 N/A N/A N/A

POSTINC0 2410 2510 2515 2610 4410 4510 4515 4610 N/A N/A N/A

POSTDEC0 2410 2510 2515 2610 4410 4510 4515 4610 N/A N/A N/A

PREINC0 2410 2510 2515 2610 4410 4510 4515 4610 N/A N/A N/A

PLUSW0 2410 2510 2515 2610 4410 4510 4515 4610 N/A N/A N/A

FSR0H 2410 2510 2515 2610 4410 4510 4515 4610 ---- 0000 ---- 0000 ---- uuuu

FSR0L 2410 2510 2515 2610 4410 4510 4515 4610 xxxx xxxx uuuu uuuu uuuu uuuu

WREG 2410 2510 2515 2610 4410 4510 4515 4610 xxxx xxxx uuuu uuuu uuuu uuuu

INDF1 2410 2510 2515 2610 4410 4510 4515 4610 N/A N/A N/A

POSTINC1 2410 2510 2515 2610 4410 4510 4515 4610 N/A N/A N/A

POSTDEC1 2410 2510 2515 2610 4410 4510 4515 4610 N/A N/A N/A

PREINC1 2410 2510 2515 2610 4410 4510 4515 4610 N/A N/A N/A

PLUSW1 2410 2510 2515 2610 4410 4510 4515 4610 N/A N/A N/A

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: One or more bits in the INTCONx or PIRx registers will be affected (to cause wake-up).

2: 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).

3: 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.

4: See Table 4-3 for Reset value for specific condition.

5: 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’.