PIC16C77X
TABLE 12-6 INITIALIZATION CONDITIONS FOR ALL REGISTERS
Register
Devices
Power-on Reset,
Brown-out Reset
MCLR Resets
WDT Reset
Wake-up via WDT or
Interrupt
W
773 774
xxxx xxxx
uuuu uuuu
uuuu uuuu
INDF
773 774
N/A
N/A
N/A
TMR0
773 774
xxxx xxxx
uuuu uuuu
uuuu uuuu
PCL
773 774
0000h
0000h
PC + 1(2)
STATUS
773 774
0001 1xxx
000q quuu(3)
uuuq quuu(3)
FSR
773 774
xxxx xxxx
uuuu uuuu
uuuu uuuu
PORTA
773 774
--0x 0000
--0u 0000
--uu uuuu
PORTB
773 774
xxxx 11xx
uuuu 11uu
uuuu uuuu
PORTC
773 774
xxxx xxxx
uuuu uuuu
uuuu uuuu
PORTD
773 774
xxxx xxxx
uuuu uuuu
uuuu uuuu
PORTE
773 774
---- -000
---- -000
---- -uuu
PCLATH
773 774
---0 0000
---0 0000
---u uuuu
INTCON
773 774
0000 000x
0000 000u
uuuu uuuu(1)
PIR1
773 774
r000 0000
r000 0000
ruuu uuuu(1)
773 774
0000 0000
0000 0000
uuuu uuuu(1)
PIR2
773 774
0--- 0--0
0--- 0--0
u--- u--u(1)
TMR1L
773 774
xxxx xxxx
uuuu uuuu
uuuu uuuu
TMR1H
773 774
xxxx xxxx
uuuu uuuu
uuuu uuuu
T1CON
773 774
--00 0000
--uu uuuu
--uu uuuu
TMR2
773 774
0000 0000
0000 0000
uuuu uuuu
T2CON
773 774
-000 0000
-000 0000
-uuu uuuu
SSPBUF
773 774
xxxx xxxx
uuuu uuuu
uuuu uuuu
SSPCON
773 774
0000 0000
0000 0000
uuuu uuuu
CCPR1L
773 774
xxxx xxxx
uuuu uuuu
uuuu uuuu
CCPR1H
773 774
xxxx xxxx
uuuu uuuu
uuuu uuuu
CCP1CON
773 774
--00 0000
--00 0000
--uu uuuu
RCSTA
773 774
0000 000x
0000 000x
uuuu uuuu
TXREG
773 774
0000 0000
0000 0000
uuuu uuuu
RCREG
773 774
0000 0000
0000 0000
uuuu uuuu
CCPR2L
773 774
xxxx xxxx
uuuu uuuu
uuuu uuuu
CCPR2H
773 774
xxxx xxxx
uuuu uuuu
uuuu uuuu
CCP2CON
773 774
--00 0000
--00 0000
--uu uuuu
ADRESH
773 774
xxxx xxxx
uuuu uuuu
uuuu uuuu
ADCON0
773 774
0000 0000
0000 0000
uuuu uuuu
OPTION_REG 773 774
1111 1111
1111 1111
uuuu uuuu
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 12-5 for reset value for specific condition.
DS30275B-page 134
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