PIC16C745/765
TABLE 13-7: INITIALIZATION CONDITIONS FOR ALL REGISTERS
Power-on Reset
Brown-out Reset
MCLR Resets
WDT Reset
Wake-up via WDT or
Interrupt
Register
W
xxxx xxxx
N/A
uuuu uuuu
N/A
uuuu uuuu
N/A
INDF
TMR0
PCL
xxxx xxxx
0000h
uuuu uuuu
0000h
uuuu uuuu
PC + 1(2)
000q quuu(3)
uuuu uuuu
--0u 0000
uuuu uuuu
uu-- -uuu
uuuu uuuu
uuuq quuu(3)
uuuu uuuu
--uu uuuu
uuuu uuuu
uu-- -uuu
uuuu uuuu
STATUS
0001 1xxx
FSR
xxxx xxxx
--0x 0000
xxxx xxxx
xx-- -xxx
xxxx xxxx
PORTA
PORTB
PORTC
PORTD(4)
PORTE(4)
PCLATH
INTCON
---- -xxx
---- -uuu
---- -uuu
---u uuuu
---0 0000
0000 000x
---0 0000
0000 000u
uuuu uuuu(1)
uuuu uuuu(1)
0000 0000
---- ---0
0000 0000
---- ---0
PIR1
PIR2
---- ---u(1)
uuuu uuuu
uuuu uuuu
--uu uuuu
uuuu uuuu
-uuu uuuu
uuuu uuuu
uuuu uuuu
--uu uuuu
uuuu -uuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uu-u
uuuu uuuu
--uu uuuu
uuuu uuuu
uu-- -uuu
uuuu uuuu
TMR1L
xxxx xxxx
xxxx xxxx
--00 0000
0000 0000
-000 0000
xxxx xxxx
xxxx xxxx
--00 0000
0000 -00x
0000 0000
0000 0000
xxxx xxxx
xxxx xxxx
0000 0000
xxxx xxxx
0000 00-0
1111 1111
--11 1111
1111 1111
11-- -111
1111 1111
uuuu uuuu
uuuu uuuu
--uu uuuu
0000 0000
-000 0000
uuuu uuuu
uuuu uuuu
--00 0000
0000 -00x
0000 0000
0000 0000
uuuu uuuu
uuuu uuuu
0000 0000
uuuu uuuu
0000 00-0
1111 1111
--11 1111
1111 1111
11-- -111
1111 1111
TMR1H
T1CON
TMR2
T2CON
CCPR1L
CCPR1H
CCP1CON
RCSTA
TXREG
RCREG
CCPR2L
CCPR2H
CCP2CON
ADRES
ADCON0
OPTION_REG
TRISA
TRISB
TRISC
TRISD(4)
Legend:
u
= unchanged,
x = unknown, -= unimplemented bit, read as ’0’, q= value depends on condition
Note 1: One or more bits in INTCON, PIR1 and/or PIR2 will be affected (to cause wake-up).
2: When the wake-up is due to an interrupt and the GIE bit is set, the PC is loaded with the interrupt vector (0004h).
3: See Table 13-5 for reset value for specific condition.
4: PIC16C765 only.
1999 Microchip Technology Inc.
Advanced Information
DS41124A-page 101
MICROCHIP [ MICROCHIP ]
