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PIC17C4X Datasheet, PDF (19/240 Pages) Microchip Technology – High-Performance 8-Bit CMOS EPROM/ROM Microcontroller
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PIC17C4X
TABLE 4-4: INITIALIZATION CONDITIONS FOR SPECIAL FUNCTION REGISTERS
Register
Address
Power-on 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 (4)
0Dh
TBLPTRH (4)
0Eh
TBLPTRL (5)
0Dh
TBLPTRH (5)
0Eh
BSR
0Fh
0000 0000
xxxx xxxx
0000h
0000 0000
1111 xxxx
0000 000-
--11 11--
0000 0000
0000 0000
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
0000 0000
0000 0000
0000 0000
0000 0000
uuuu uuuu
0000h
0000 0000
1111 uuuu
0000 000-
--11 qq--
0000 0000
0000 0000
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
0000 0000
0000 0000
0000 0000
0000 0000
uuuu uuuu
PC + 1(2)
uuuu uuuu
1111 uuuu
0000 000-
--uu qq--
uuuu uuuu(1)
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
Bank 0
PORTA
10h
DDRB
11h
PORTB
12h
RCSTA
13h
RCREG
14h
TXSTA
15h
TXREG
16h
SPBRG
17h
0-xx xxxx
1111 1111
xxxx xxxx
0000 -00x
xxxx xxxx
0000 --1x
xxxx xxxx
xxxx xxxx
0-uu uuuu
1111 1111
uuuu uuuu
0000 -00u
uuuu uuuu
0000 --1u
uuuu uuuu
uuuu uuuu
uuuu 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
---- -111
---- -111
---- -uuu
PORTE
15h
---- -xxx
---- -uuu
---- -uuu
PIR
16h
0000 0010
0000 0010
uuuu uuuu(1)
PIE
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, PIR 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 4-3 for reset value of specific condition.
4: Only applies to the PIC17C42.
5: Does not apply to the PIC17C42.
© 1996 Microchip Technology Inc.
DS30412C-page 19
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