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PIC16LF720_11 Datasheet, PDF (34/244 Pages) Microchip Technology – 20-Pin Flash Microcontrollers with nanoWatt XLP Technology
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PIC16(L)F720/721
TABLE 3-6: INITIALIZATION CONDITION FOR REGISTERS
Register
Address
Power-on Reset/
Brown-out Reset(1)
MCLR Reset/
WDT Reset
Wake-up from Sleep through
Interrupt/Time-out
W
—
xxxx xxxx
uuuu uuuu
uuuu uuuu
INDF
00h/80h/
100h/180h
xxxx xxxx
xxxx xxxx
uuuu uuuu
TMR0
01h/101h
xxxx xxxx
uuuu uuuu
uuuu uuuu
PCL
02h/82h/
0000 0000
102h/182h
0000 0000
PC + 1(3)
STATUS
03h/83h/
103h/183h
0001 1xxx
000q quuu(4)
uuuq quuu(4)
FSR
04h/84h/
104h/184h
xxxx xxxx
uuuu uuuu
uuuu uuuu
PORTA
05h
--xx xxxx
--xx xxxx
--uu uuuu
PORTB
06h
xxxx ----
xxxx ----
uuuu ----
PORTC
07h
xxxx xxxx
xxxx xxxx
uuuu uuuu
PCLATH
0Ah/8Ah/
10Ah/18Ah
---0 0000
---0 0000
---u uuuu
INTCON
0Bh/8Bh/
10Bh/18Bh
0000 000x
0000 000x
uuuu uuuu(2)
PIR1
0Ch
0000 0000
0000 0000
uuuu uuuu(2)
TMR1L
0Eh
xxxx xxxx
uuuu uuuu
uuuu uuuu
TMR1H
0Fh
xxxx xxxx
uuuu uuuu
uuuu uuuu
T1CON
10h
0000 -0-0
0000 -0-0
uuuu -u-u
TMR2
11h
0000 0000
0000 0000
uuuu uuuu
T2CON
12h
-000 0000
-000 0000
-uuu uuuu
SSPBUF
13h
xxxx xxxx
xxxx xxxx
uuuu uuuu
SSPCON
14h
0000 0000
0000 0000
uuuu uuuu
CCPR1L
15h
xxxx xxxx
xxxx xxxx
uuuu uuuu
CCPR1H
16h
xxxx xxxx
xxxx xxxx
uuuu uuuu
CCP1CON
17h
--00 0000
--00 0000
--uu uuuu
RCSTA
18h
0000 000x
0000 000x
uuuu uuuu
TXREG
19h
0000 0000
0000 0000
uuuu uuuu
RCREG
1Ah
0000 0000
0000 0000
uuuu uuuu
ADRES
1Eh
xxxx xxxx
uuuu uuuu
uuuu uuuu
ADCON0
1Fh
--00 0000
--00 0000
--uu uuuu
OPTION_REG 81h/181h
1111 1111
1111 1111
uuuu uuuu
TRISA
85h
--11 -111
--11 -111
--uu -uuu
TRISB
86h
1111 ----
1111 ----
uuuu ----
TRISC
87h
1111 1111
1111 1111
uuuu uuuu
PIE1
8Ch
0000 0000
0000 0000
uuuu uuuu
Legend: u = unchanged, x = unknown, - = unimplemented bit, reads as ‘0’, q = value depends on condition.
Note 1: If VDD goes too low, Power-on Reset will be activated and registers will be affected differently.
2: One or more bits in INTCON and/or PIR1 will be affected (to cause wake-up).
3: When the wake-up is due to an interrupt and the GIE bit is set, the PC is loaded with the interrupt
vector (0004h).
4: See Table 3-8 for Reset value for specific condition.
5: If Reset was due to brown-out, then bit 0 = 0. All other Resets will cause bit 0 = u.
DS41430B-page 34
Preliminary
 2011 Microchip Technology Inc.
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