PIC18F2455_07 Datasheet, PDF (57/430 Pages) Microchip Technology – 28/40/44-Pin, High Performance, Enhanced Flash, USB Microcontrollers with nanoWatt Technology

PIC18F2455/2550/4455/4550
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
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
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’.
© 2007 Microchip Technology Inc.
Preliminary
DS39632D-page 55