PIC16F722 Datasheet, PDF (34/302 Pages) Microchip Technology – 28/40/44-Pin Flash Microcontrollers with nanoWatt XLP Technology

PIC16F72X/PIC16LF72X
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
Brown-out Reset
Interrupt Wake-up from Sleep
PC + 1
0000h
PC + 1⁽¹⁾
uuu0 0uuu
0001 1uuu
uuu1 0uuu
---- --uu
---- --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 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’.
DS41341E-page 34
© 2009 Microchip Technology Inc.