PIC16F72 Datasheet, PDF (67/136 Pages) Microchip Technology – 28-Pin, 8-Bit CMOS FLASH MCU with A/D Converter

PIC16F72
TABLE 11-3: TIME-OUT IN VARIOUS SITUATIONS
Oscillator Configuration
Power-up
PWRTEN = 0
PWRTEN = 1
XT, HS, LP
72 ms + 1024 TOSC
1024 TOSC
RC
72 ms
—
Brown-out
72 ms + 1024 TOSC
72 ms
Wake-up from
SLEEP
1024 TOSC
—
TABLE 11-4: STATUS BITS AND THEIR SIGNIFICANCE
POR
BOR
TO
PD
(PCON<1>) (PCON<0>) (STATUS<4>) (STATUS<3>)
Significance
0
x
1
0
x
0
0
x
x
u
0
1
u
u
0
u
u
0
1
Power-on Reset
x
Illegal, TO is set on POR
0
Illegal, PD is set on POR
1
Brown-out Reset
1
WDT Reset
0
WDT Wake-up
u
u
u
u
MCLR Reset during normal operation
u
u
1
0
MCLR Reset during SLEEP or interrupt wake-up from
SLEEP
TABLE 11-5: RESET CONDITION FOR SPECIAL REGISTERS
Condition
Program
Counter
STATUS
Register
PCON
Register
Power-on Reset
000h
0001 1xxx
---- --0x
MCLR Reset during normal operation
000h
000u uuuu
---- --uu
MCLR Reset during SLEEP
000h
0001 0uuu
---- --uu
WDT Reset
000h
0000 1uuu
---- --uu
WDT Wake-up
PC + 1
uuu0 0uuu
---- --uu
Brown-out Reset
Interrupt Wake-up from SLEEP
000h
PC + 1⁽¹⁾
0001 1uuu
uuu1 0uuu
---- --u0
---- --uu
Legend: u = unchanged, x = unknown, - = unimplemented bit, read as '0'.
Note 1: When the wake-up is due to an interrupt and the GIE bit is set, the PC is loaded with the interrupt vector
(0004h).
 2002 Microchip Technology Inc.
DS39597B-page 65