Datasheet
2010 Microchip Technology Inc. DS39616D-page 55
PIC18F2331/2431/4331/4431
FSR1H 2331 2431 4331 4431 ---- 0000 ---- uuuu ---- uuuu
FSR1L 2331 2431 4331 4431 xxxx xxxx uuuu uuuu uuuu uuuu
BSR 2331 2431 4331 4431 ---- 0000 ---- 0000 ---- uuuu
INDF2 2331 2431 4331 4431 N/A N/A N/A
POSTINC2 2331 2431 4331 4431 N/A N/A N/A
POSTDEC2 2331 2431 4331 4431 N/A N/A N/A
PREINC2 2331 2431 4331 4431 N/A N/A N/A
PLUSW2 2331 2431 4331 4431 N/A N/A N/A
FSR2H 2331 2431 4331 4431 ---- 0000 ---- uuuu ---- uuuu
FSR2L 2331 2431 4331 4431 xxxx xxxx uuuu uuuu uuuu uuuu
STATUS 2331 2431 4331 4431 ---x xxxx ---u uuuu ---u uuuu
TMR0H 2331 2431 4331 4431 0000 0000 0000 0000 uuuu uuuu
TMR0L 2331 2431 4331 4431 xxxx xxxx uuuu uuuu uuuu uuuu
T0CON 2331 2431 4331 4431 1111 1111 1111 1111 uuuu uuuu
OSCCON 2331 2431 4331 4431 0000 q000 0000 q000 uuuu uuuu
LVDCON 2331 2431 4331 4431 --00 0101 --00 0101 --uu uuuu
WDTCON 2331 2431 4331 4431 0--- ---0 0--- ---0 u--- ---u
RCON
(4)
2331 2431 4331 4431 0--1 11q0 0--q qquu u--u qquu
TMR1H 2331 2431 4331 4431 xxxx xxxx uuuu uuuu uuuu uuuu
TMR1L 2331 2431 4331 4431 xxxx xxxx uuuu uuuu uuuu uuuu
T1CON 2331 2431 4331 4431 0000 0000 u0uu uuuu uuuu uuuu
TMR2 2331 2431 4331 4431 0000 0000 0000 0000 uuuu uuuu
PR2 2331 2431 4331 4431 1111 1111 1111 1111 1111 1111
T2CON 2331 2431 4331 4431 -000 0000 -000 0000 -uuu uuuu
SSPBUF 2331 2431 4331 4431 xxxx xxxx uuuu uuuu uuuu uuuu
SSPADD 2331 2431 4331 4431 0000 0000 0000 0000 uuuu uuuu
SSPSTAT 2331 2431 4331 4431 0000 0000 0000 0000 uuuu uuuu
SSPCON 2331 2431 4331 4431 0000 0000 0000 0000 uuuu uuuu
TABLE 5-3: 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: 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 5-2 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’.
6: Bit 3 of PORTE and LATE are enabled if MCLR
functionality is disabled. When not enabled as the PORTE
pin, they are disabled and read as ‘0’. The 28-pin devices do not have only RE3 implemented.