PIC18F258 Datasheet, PDF(32/384 Page) Microchip Technology – High Performance, 28/40-Pin Enhanced FLASH Microcontrollers with CAN

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PIC18F258 Datasheet, PDF (32/384 Pages) Microchip Technology – High Performance, 28/40-Pin Enhanced FLASH Microcontrollers with CAN

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PIC18FXX8

TABLE 3-3: INITIALIZATION CONDITIONS FOR ALL REGISTERS

Register

Applicable Devices

Power-on Reset,

Brown-out Reset

MCLR Reset

WDT Reset

RESET Instruction

Stack Resets

Wake-up via WDT

or Interrupt

TOSU

TOSH

TOSL

STKPTR

PCLATU

PIC18F2X8 PIC18F4X8

PIC18F2X8 PIC18F4X8

PIC18F2X8 PIC18F4X8

PIC18F2X8 PIC18F4X8

PIC18F2X8 PIC18F4X8

---0 0000

0000 0000

0000 0000

00-0 0000

---0 0000

---0 0000

0000 0000

0000 0000

uu-0 0000

---0 0000

---0 uuuu(3)

uuuu uuuu(3)

uuuu uuuu(3)

uu-u uuuu(3)

---u uuuu

PCLATH

PCL

TBLPTRU

TBLPTRH

TBLPTRL

TABLAT

PIC18F2X8 PIC18F4X8

PIC18F2X8 PIC18F4X8

PIC18F2X8 PIC18F4X8

PIC18F2X8 PIC18F4X8

PIC18F2X8 PIC18F4X8

PIC18F2X8 PIC18F4X8

0000 0000

0000 0000

--00 0000

0000 0000

0000 0000

0000 0000

0000 0000

0000 0000

--00 0000

0000 0000

0000 0000

0000 0000

uuuu uuuu

PC + 2(2)

--uu uuuu

uuuu uuuu

uuuu uuuu

uuuu uuuu

PRODH

PRODL

INTCON

INTCON2

INTCON3

INDF0

PIC18F2X8 PIC18F4X8

PIC18F2X8 PIC18F4X8

PIC18F2X8 PIC18F4X8

PIC18F2X8 PIC18F4X8

PIC18F2X8 PIC18F4X8

PIC18F2X8 PIC18F4X8

xxxx xxxx

xxxx xxxx

0000 000x

111- -1-1

11-- 0-00

N/A

uuuu uuuu

uuuu uuuu

0000 000u

111- -1-1

11-- 0-00

N/A

uuuu uuuu

uuuu uuuu

uuuu uuuu(1)

uuuu -u-u(1)

uu-u u-uu(1)

N/A

POSTINC0

PIC18F2X8 PIC18F4X8

N/A

N/A

N/A

POSTDEC0

PREINC0

PLUSW0

FSR0H

FSR0L

WREG

PIC18F2X8 PIC18F4X8

PIC18F2X8 PIC18F4X8

PIC18F2X8 PIC18F4X8

PIC18F2X8 PIC18F4X8

PIC18F2X8 PIC18F4X8

PIC18F2X8 PIC18F4X8

N/A

N/A

N/A

---- 0000

xxxx xxxx

xxxx xxxx

N/A

N/A

N/A

---- 0000

uuuu uuuu

uuuu uuuu

N/A

N/A

N/A

---- uuuu

uuuu uuuu

uuuu uuuu

INDF1

PIC18F2X8 PIC18F4X8

N/A

N/A

N/A

POSTINC1

PIC18F2X8 PIC18F4X8

N/A

N/A

N/A

POSTDEC1

PIC18F2X8 PIC18F4X8

N/A

N/A

N/A

PREINC1

PIC18F2X8 PIC18F4X8

N/A

N/A

N/A

PLUSW1

PIC18F2X8 PIC18F4X8

N/A

N/A

N/A

Legend: u = unchanged, x = unknown, - = unimplemented bit, read as â0â, 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 3-2 for RESET value for specific condition.

5: Bit 6 of PORTA, LATA, and TRISA are enabled in ECIO and RCIO Oscillator modes only. In all other

Oscillator modes, they are disabled and read â0â.

6: Values for CANSTAT also apply to to its other instances (CANSTATRO1 through CANSTATRO4).

DS41159B-page 30

Preliminary

ï£© 2002 Microchip Technology Inc.

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