Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller QFN 44 (8x8) 8-Bit 48 MHz I/O number 35

PIC18F2455/2550/4455/4550

UEP15 2455 2550 4455 4550 ---0 0000 ---0 0000 ---u uuuu

UEP14 2455 2550 4455 4550 ---0 0000 ---0 0000 ---u uuuu

UEP13 2455 2550 4455 4550 ---0 0000 ---0 0000 ---u uuuu

UEP12 2455 2550 4455 4550 ---0 0000 ---0 0000 ---u uuuu

UEP11 2455 2550 4455 4550 ---0 0000 ---0 0000 ---u uuuu

UEP10 2455 2550 4455 4550 ---0 0000 ---0 0000 ---u uuuu

UEP9 2455 2550 4455 4550 ---0 0000 ---0 0000 ---u uuuu

UEP8 2455 2550 4455 4550 ---0 0000 ---0 0000 ---u uuuu

UEP7 2455 2550 4455 4550 ---0 0000 ---0 0000 ---u uuuu

UEP6 2455 2550 4455 4550 ---0 0000 ---0 0000 ---u uuuu

UEP5 2455 2550 4455 4550 ---0 0000 ---0 0000 ---u uuuu

UEP4 2455 2550 4455 4550 ---0 0000 ---0 0000 ---u uuuu

UEP3 2455 2550 4455 4550 ---0 0000 ---0 0000 ---u uuuu

UEP2 2455 2550 4455 4550 ---0 0000 ---0 0000 ---u uuuu

UEP1 2455 2550 4455 4550 ---0 0000 ---0 0000 ---u uuuu

UEP0 2455 2550 4455 4550 ---0 0000 ---0 0000 ---u uuuu

UCFG 2455 2550 4455 4550 00-0 0000 00-0 0000 uu-u uuuu

UADDR 2455 2550 4455 4550 -000 0000 -000 0000 -uuu uuuu

UCON 2455 2550 4455 4550 -0x0 000- -0x0 000- -uuu uuu-

USTAT 2455 2550 4455 4550 -xxx xxx- -xxx xxx- -uuu uuu-

UEIE 2455 2550 4455 4550 0--0 0000 0--0 0000 u--u uuuu

UEIR 2455 2550 4455 4550 0--0 0000 0--0 0000 u--u uuuu

UIE 2455 2550 4455 4550 -000 0000 -000 0000 -uuu uuuu

UIR 2455 2550 4455 4550 -000 0000 -000 0000 -uuu uuuu

UFRMH 2455 2550 4455 4550 ---- -xxx ---- -xxx ---- -uuu

UFRML 2455 2550 4455 4550 xxxx xxxx xxxx xxxx uuuu uuuu

SPPCON

2455 2550 4455 4550 ---- --00 ---- --00 ---- --uu

SPPEPS 2455 2550 4455 4550 00-0 0000 00-0 0000 uu-u uuuu

SPPCFG

2455 2550 4455 4550 0000 0000 0000 0000 uuuu uuuu

SPPDATA

2455 2550 4455 4550 0000 0000 0000 0000 uuuu uuuu

TABLE 4-4: INITIALIZATION CONDITIONS FOR ALL REGISTERS (CONTINUED)

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’.