PIC16LF720_11 Datasheet, PDF (28/244 Pages) Microchip Technology – 20-Pin Flash Microcontrollers with nanoWatt XLP Technology

PIC16(L)F720/721
TABLE 3-1: STATUS BITS AND THEIR SIGNIFICANCE
POR BOR TO PD
Condition
0
x
1 1 Power-on Reset or LDO Reset
0
x
0 x Illegal, TO is set on POR
0
x
x 0 Illegal, PD is set on POR
1
0
1 1 Brown-out Reset
1
1
0 1 WDT Reset
1
1
0 0 WDT Wake-up
1
1
u u MCLR Reset during normal operation
1
1
1 0 MCLR Reset during Sleep or interrupt wake-up from Sleep
TABLE 3-2: RESET CONDITION FOR SPECIAL REGISTERS⁽²⁾
Condition
Program
Counter
STATUS
Register
PCON
Register
Power-on Reset
0000h
0001 1xxx
---- --0x
MCLR Reset during normal operation
0000h
000u uuuu
---- --uu
MCLR Reset during Sleep
0000h
0001 0uuu
---- --uu
WDT Reset
0000h
0000 1uuu
---- --uu
WDT Wake-up
PC + 1
uuu0 0uuu
---- --uu
Brown-out Reset
Interrupt Wake-up from Sleep
0000h
PC + 1⁽¹⁾
0001 1uuu
uuu1 0uuu
---- --u0
---- --uu
Legend: u = unchanged, x = unknown, - = unimplemented bit, reads as ‘0’.
Note 1: When the wake-up is due to an interrupt and Global Interrupt Enable bit (GIE) is set, the return address is
pushed on the stack and PC is loaded with the interrupt vector (0004h) after execution of PC + 1.
2: If a Status bit is not implemented, that bit will be read as ‘0’.
DS41430B-page 28
Preliminary
 2011 Microchip Technology Inc.