
PIC16C72 Series
1998 Microchip Technology Inc.
Preliminary
DS39016A-page 65
TABLE 10-6
INITIALIZATION CONDITIONS FOR ALL REGISTERS
Register
Power-on Reset,
Brown-out Reset
MCLR Resets
WDT Reset
Wake-up via WDT or Inter-
rupt
W
xxxx xxxx
uuuu uuuu
INDF
N/A
TMR0
xxxx xxxx
uuuu uuuu
PCL
0000h
PC + 1(2)
STATUS
0001 1xxx
000q quuu(3)
uuuq quuu(3)
FSR
xxxx xxxx
uuuu uuuu
PORTA
--0x 0000
--0u 0000
--uu uuuu
PORTB
xxxx xxxx
uuuu uuuu
PORTC
xxxx xxxx
uuuu uuuu
PCLATH
---0 0000
---u uuuu
INTCON
0000 000x
0000 000u
uuuu uuuu
(1)
PIR1
-0-- 0000
-u-- uuuu(1)
TMR1L
xxxx xxxx
uuuu uuuu
TMR1H
xxxx xxxx
uuuu uuuu
T1CON
--00 0000
--uu uuuu
TMR2
0000 0000
uuuu uuuu
T2CON
-000 0000
-uuu uuuu
SSPBUF
xxxx xxxx
uuuu uuuu
SSPCON
0000 0000
uuuu uuuu
CCPR1L
xxxx xxxx
uuuu uuuu
CCPR1H
xxxx xxxx
uuuu uuuu
CCP1CON
--00 0000
--uu uuuu
ADRES
xxxx xxxx
uuuu uuuu
ADCON0
0000 00-0
uuuu uu-u
OPTION
1111 1111
uuuu uuuu
TRISA
--11 1111
--uu uuuu
TRISB
1111 1111
uuuu uuuu
TRISC
1111 1111
uuuu uuuu
PIE1
-0-- 0000
-u-- uuuu
PCON
---- --0u
---- --uu
PR2
1111 1111
SSPADD
0000 0000
uuuu uuuu
SSPSTAT
--00 0000
--uu uuuu
ADCON1
---- -000
---- -uuu
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 10-5 for reset value for specic condition.