PIC16F5X
TABLE 5-3: RESET CONDITIONS FOR ALL REGISTERS
Register
Address
Power-on Reset
MCLR or WDT Reset
W
N/A
xxxx xxxx
uuuu uuuu
TRIS
N/A
1111 1111
1111 1111
OPTION
N/A
--11 1111
--11 1111
INDF
00h
xxxx xxxx
uuuu uuuu
TMR0
01h
xxxx xxxx
uuuu uuuu
PCL
02h
1111 1111
1111 1111
STATUS
FSR(1)
FSR(2)
FSR(3)
03h
0001 1xxx
000q quuu
04h
111x xxxx
111u uuuu
04h
1xxx xxxx
1uuu uuuu
04h
xxxx xxxx
uuuu uuuu
PORTA
05h
---- xxxx
---- uuuu
PORTB
PORTC(4)
PORTD(5)
PORTE(5)
06h
xxxx xxxx
uuuu uuuu
07h
xxxx xxxx
uuuu uuuu
08h
xxxx xxxx
uuuu uuuu
09h
xxxx ----
uuuu ----
Legend: u = unchanged, x = unknown, – = unimplemented, read as ‘0’, q = see tables in Table 5-1 for possible
values.
Note 1: PIC16F54 only.
2: PIC16F57 only.
3: PIC16F59 only.
4: General purpose register file on PIC16F54.
5: General purpose register file on PIC16F54 and PIC16F57.
FIGURE 5-1:
VDD
SIMPLIFIED BLOCK DIAGRAM OF ON-CHIP RESET CIRCUIT
POR
MCLR/VPP
WDT
Module
DRT
Reset
MCLR
Filter
S
R
Q
Chip Reset
DS41213D-page 24
© 2007 Microchip Technology Inc.