Datasheet

PIC18F2455/2550/4455/4550
DS39632E-page 56 © 2009 Microchip Technology Inc.
IPR2 2455 2550 4455 4550 1111 1111 1111 1111 uuuu uuuu
PIR2 2455 2550 4455 4550 0000 0000 0000 0000 uuuu uuuu
(2)
PIE2 2455 2550 4455 4550 0000 0000 0000 0000 uuuu uuuu
IPR1 2455 2550 4455 4550 1111 1111 1111 1111 uuuu uuuu
2455 2550 4455 4550 -111 1111 -111 1111 -uuu uuuu
PIR1
2455 2550 4455 4550 0000 0000 0000 0000 uuuu uuuu
(2)
2455 2550 4455 4550 -000 0000 -000 0000 -uuu uuuu
PIE1 2455 2550 4455 4550 0000 0000 0000 0000 uuuu uuuu
2455 2550
4455 4550 -000 0000 -000 0000 -uuu uuuu
OSCTUNE 2455 2550 4455 4550 0--0 0000 0--0 0000 u--u uuuu
TRISE 2455 2550 4455 4550 ---- -111 ---- -111 ---- -uuu
TRISD
2455 2550 4455 4550 1111 1111 1111 1111 uuuu uuuu
TRISC 2455 2550 4455 4550 11-- -111 11-- -111 uu-- -uuu
TRISB 2455 2550 4455 4550 1111 1111 1111 1111 uuuu uuuu
TRISA
(5)
2455 2550 4455 4550 -111 1111
(5)
-111 1111
(5)
-uuu uuuu
(5)
LATE 2455 2550 4455 4550 ---- -xxx ---- -uuu ---- -uuu
LATD 2455 2550 4455 4550 xxxx xxxx uuuu uuuu uuuu uuuu
LATC 2455 2550 4455 4550 xx-- -xxx uu-- -uuu uu-- -uuu
LATB 2455 2550 4455 4550 xxxx xxxx uuuu uuuu uuuu uuuu
LATA
(5)
2455 2550 4455 4550 -xxx xxxx
(5)
-uuu uuuu
(5)
-uuu uuuu
(5)
PORTE 2455 2550 4455 4550 0--- x000 0--- x000 u--- uuuu
PORTD 2455 2550 4455 4550 xxxx xxxx uuuu uuuu uuuu uuuu
PORTC 2455 2550 4455 4550 xxxx -xxx uuuu -uuu uuuu -uuu
PORTB 2455 2550 4455 4550 xxxx xxxx uuuu uuuu uuuu uuuu
PORTA
(5)
2455 2550 4455 4550 -x0x 0000
(5)
-u0u 0000
(5)
-uuu uuuu
(5)
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’.