PIC16F631_08 Datasheet, PDF (208/306 Pages) Microchip Technology – 20-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC16F631/677/685/687/689/690
TABLE 14-4: INITIALIZATION CONDITION FOR REGISTER (CONTINUED)
Register
Address Power-on Reset
MCLR Reset
WDT Reset (Continued)
Brown-out Reset⁽¹⁾
Wake-up from Sleep
through Interrupt
Wake-up from Sleep
through WDT Time-out
TRISB
86h/186h
1111 ----
1111 ----
uuuu ----
TRISC
87h/187h
1111 1111
1111 1111
uuuu uuuu
PIE1
8Ch
-000 0000
-000 0000
-uuu uuuu
PIE2
PCON
8Dh
0000 ----
8Eh
--01 --0x
0000 ----
--0u --uq^{1, 5)}
uuuu uuuu
--uu --uu
OSCCON
8Fh
-110 q000
-110 q000
-uuu uuuu
OSCTUNE
90h
---0 0000
---u uuuu
---u uuuu
PR2
92h
1111 1111
1111 1111
uuuu uuuu
SSPADD
SSPMSK⁽⁶⁾
93h
0000 0000
93h
---- ----
1111 1111
1111 1111
uuuu uuuu
uuuu uuuu
SSPSTAT
94h
0000 0000
1111 1111
uuuu uuuu
WPUA
95h
--11 -111
--11 -111
uuuu uuuu
IOCA
96h
--00 0000
--00 0000
--uu uuuu
WDTCON
97h
---0 1000
---0 1000
---u uuuu
TXSTA
98h
0000 0010
0000 0010
uuuu uuuu
SPBRG
99h
0000 0000
0000 0000
uuuu uuuu
SPBRGH
9Ah
0000 0000
0000 0000
uuuu uuuu
BAUDCTL
9Bh
01-0 0-00
01-0 0-00
uu-u u-uu
ADRESL
9Eh
xxxx xxxx
uuuu uuuu
uuuu uuuu
ADCON1
9Fh
-000 ----
-000 ----
-uuu ----
EEDAT
10Ch
0000 0000
0000 0000
uuuu uuuu
EEADR
10Dh
0000 0000
0000 0000
uuuu uuuu
EEDATH
10Eh
--00 0000
--00 0000
--uu uuuu
EEADRH
10Fh
---- 0000
---- 0000
---- uuuu
WPUB
115h
1111 ----
1111 ----
uuuu ----
IOCB
116h
0000 ----
0000 ----
uuuu ----
VRCON
118h
0000 0000
0000 0000
uuuu uuuu
CM1CON0
119h
0000 -000
0000 -000
uuuu -uuu
CM2CON0
11Ah
0000 -000
0000 -000
uuuu -uuu
CM2CON1
11Bh
00-- --00
00-- --10
uu-- --uu
ANSEL
11Eh
1111 1111
1111 1111
uuuu uuuu
ANSELH
11Fh
---- 1111
---- 1111
---- uuuu
EECON1
18Ch
x--- x000
u--- q000
---- uuuu
EECON2
18Dh
---- ----
---- ----
---- ----
PSTRCON
19Dh
---0 0001
---0 0001
---u uuuu
SRCON
19EH
0000 00--
0000 00--
uuuu uu--
Legend:
Note 1:
2:
3:
4:
5:
6:
u = unchanged, x = unknown, — = unimplemented bit, reads as ‘0’, q = value depends on condition.
If VDD goes too low, Power-on Reset will be activated and registers will be affected differently.
One or more bits in INTCON and/or PIR1 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 14-5 for Reset value for specific condition.
If Reset was due to brown-out, then bit 0 = 0. All other Resets will cause bit 0 = u.
Accessible only when SSPM<3:0> = 1001.
DS41262E-page 206
© 2008 Microchip Technology Inc.