PIC16F819 Microchip Technology Inc., PIC16F819 Datasheet - Page 96

• Manufacturer Part Number: PIC16F819
• Description: 18/20-pin Enhanced Flash Microcontrollers With Nanowatt Technology
• Manufacturer: Microchip Technology Inc.

PIC16F818/819
TABLE 12-4:
DS39598E-page 94
Legend: u = unchanged, x = unknown, - = unimplemented bit, read as ‘0’, q = value depends on condition,
Note 1:
W
INDF
TMR0
PCL
STATUS
FSR
PORTA
PORTB
PCLATH
INTCON
PIR1
PIR2
TMR1L
TMR1H
T1CON
TMR2
T2CON
SSPBUF
SSPCON
CCPR1L
CCPR1H
CCP1CON
ADRESH
ADCON0
OPTION_REG
TRISA
TRISB
PIE1
PIE2
PCON
OSCCON
OSCTUNE
PR2
SSPADD
SSPSTAT
ADRESL
ADCON1
EEDATA
EEADR
EEDATH
EEADRH
EECON1
EECON2
2:
3:
Register
r = reserved, maintain clear
One or more bits in INTCON, PIR1 and PR2 will be affected (to cause wake-up).
When the wake-up is due to an interrupt and the GIE bit is set, the PC is loaded with the interrupt vector (0004h).
See Table 12-3 for Reset value for specific conditions.
INITIALIZATION CONDITIONS FOR ALL REGISTERS
Brown-out Reset
Power-on Reset,
xxxx xxxx
xxxx xxxx
0001 1xxx
xxxx xxxx
xxx0 0000
xxxx xxxx
---0 0000
0000 000x
-0-- 0000
---0 ----
xxxx xxxx
xxxx xxxx
--00 0000
0000 0000
-000 0000
xxxx xxxx
0000 0000
xxxx xxxx
xxxx xxxx
--00 0000
xxxx xxxx
0000 00-0
1111 1111
1111 1111
1111 1111
-0-- 0000
---0 ----
---- --qq
-000 -0--
--00 0000
1111 1111
0000 0000
0000 0000
xxxx xxxx
00-- 0000
xxxx xxxx
xxxx xxxx
--xx xxxx
---- -xxx
x--x x000
---- ----
0000h
N/A
MCLR Reset,
uuuu uuuu
uuuu uuuu
000q quuu
uuuu uuuu
uuu0 0000
uuuu uuuu
---0 0000
0000 000u
-0-- 0000
---0 ----
uuuu uuuu
uuuu uuuu
--uu uuuu
0000 0000
-000 0000
uuuu uuuu
0000 0000
uuuu uuuu
uuuu uuuu
--00 0000
uuuu uuuu
0000 00-0
1111 1111
1111 1111
1111 1111
-0-- 0000
---0 ----
---- --uu
-000 -0--
--00 0000
1111 1111
0000 0000
0000 0000
uuuu uuuu
00-- 0000
uuuu uuuu
uuuu uuuu
--uu uuuu
---- -uuu
u--x u000
---- ----
WDT Reset
0000h
N/A
(3)
 2004 Microchip Technology Inc.
Wake-up via WDT or
uuuu uuuu
uuuu uuuu
uuuq quuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
---u uuuu
uuuu uuuu
-u-- uuuu
---u ----
uuuu uuuu
uuuu uuuu
--uu uuuu
uuuu uuuu
-uuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
--uu uuuu
uuuu uuuu
uuuu uu-u
uuuu uuuu
uuuu uuuu
uuuu uuuu
-u-- uuuu
---u ----
---- --uu
-uuu -u--
--uu uuuu
1111 1111
uuuu uuuu
uuuu uuuu
uuuu uuuu
uu-- uuuu
uuuu uuuu
uuuu uuuu
--uu uuuu
---- -uuu
u--u uuuu
---- ----
Interrupt
PC + 1
N/A
(2)
(3)
(1)
(1)
(1)