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| PIC17C75X Datasheet, PDF (25/320 Pages) Microchip Technology – High-Performance 8-Bit CMOS EPROM Microcontrollers | |||
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PIC17C75X
TABLE 5-4: INITIALIZATION CONDITIONS FOR SPECIAL FUNCTION REGISTERS
Register
Address
Power-on Reset
Brown-out Reset
MCLR Reset
WDT Reset
Wake-up from SLEEP
through interrupt
Unbanked
INDF0
00h
FSR0
01h
PCL
02h
PCLATH
03h
ALUSTA
04h
T0STA
05h
CPUSTA(3)
06h
INTSTA
07h
INDF1
08h
FSR1
09h
WREG
0Ah
TMR0L
0Bh
TMR0H
0Ch
TBLPTRL
0Dh
TBLPTRH
0Eh
BSR
0Fh
N.A.
xxxx xxxx
0000h
0000 0000
1111 xxxx
0000 000-
--11 1100(4)
0000 0000
N.A.
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
0000 0000
0000 0000
0000 0000
N.A.
uuuu uuuu
0000h
0000 0000
1111 uuuu
0000 000-
--11 qquu(4)
0000 0000
N.A.
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
0000 0000
0000 0000
0000 0000
N.A.
uuuu uuuu
PC + 1(2)
uuuu uuuu
1111 uuuu
0000 000-
--uu qquu(4)
uuuu uuuu(1)
N.A.
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
Bank 0
PORTA
10h
0-xx xxxx
0-uu uuuu
DDRB
11h
1111 1111
1111 1111
PORTB
12h
xxxx xxxx
uuuu uuuu
RCSTA1
13h
0000 -00x
0000 -00u
RCREG1
14h
xxxx xxxx
uuuu uuuu
TXSTA1
15h
0000 --1x
0000 --1u
TXREG1
16h
xxxx xxxx
uuuu uuuu
SPBRG1
17h
xxxx xxxx
uuuu uuuu
u-uu uuuu
uuuu uuuu
uuuu uuuu
uuuu -uuu
uuuu uuuu
uuuu --uu
uuuu uuuu
uuuu uuuu
Bank 1
DDRC
10h
1111 1111
1111 1111
uuuu uuuu
PORTC
11h
xxxx xxxx
uuuu uuuu
uuuu uuuu
DDRD
12h
1111 1111
1111 1111
uuuu uuuu
PORTD
13h
xxxx xxxx
uuuu uuuu
uuuu uuuu
DDRE
14h
---- 1111
---- 1111
---- uuuu
PORTE
15h
---- xxxx
---- uuuu
---- uuuu
PIR1
16h
x000 0010
u000 0010
uuuu uuuu(1)
PIE1
17h
0000 0000
0000 0000
uuuu uuuu
Legend: u = unchanged, x = unknown, - = unimplemented read as '0', q = value depends on condition.
Note 1: One or more bits in INTSTA, PIR1, PIR2 will be affected (to cause wake-up).
2: When the wake-up is due to an interrupt and the GLINTD bit is cleared, the PC is loaded with the interrupt
vector.
3: See Table 5-3 for reset value of speciï¬c condition.
4: If Brown-out is enabled, else the BOR bit is unknown.
© 1997 Microchip Technology Inc.
Preliminary
DS30264A-page 25
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