PIC16F7X7
TABLE 15-1: TIME-OUT IN VARIOUS SITUATIONS
Power-up
Oscillator
Brown-out Reset
PWRTE = 0 PWRTE = 1
Wake-up from
Sleep
Configuration
PWRTE = 0
TPWRT + 1024 • TOSC
TPWRT
PWRTE = 1
1024 • TOSC
5-10 µs(1)
—
XT, HS, LP
EXTRC, INTRC
T1OSC
TPWRT + 1024 • TOSC
1024 • TOSC
5-10 µs(1)
—
1024 • TOSC
5-10 µs(1)
5-10 µs(1)
TPWRT
—
—
Note 1: CPU start-up is always invoked on POR, BOR and wake-up from Sleep. The 5 µs-10 µs delay is based on
a 1 MHz system clock.
TABLE 15-2: STATUS BITS AND THEIR SIGNIFICANCE
POR
BOR
TO
PD
0
0
0
1
1
1
1
1
x
x
x
0
1
1
1
1
1
0
x
1
0
0
u
1
1
x
0
1
1
0
u
0
Power-on Reset
Illegal, TO is set on POR
Illegal, PD is set on POR
Brown-out Reset
WDT Reset
WDT Wake-up
MCLR Reset during normal operation
MCLR Reset during Sleep or Interrupt Wake-up from Sleep
Legend: u = unchanged, x= unknown
TABLE 15-3: RESET CONDITION FOR SPECIAL REGISTERS
Program
Status
Register
PCON
Register
Condition
Counter
Power-on Reset
000h
000h
0001 1xxx
000u uuuu
0001 0uuu
0000 1uuu
uuu0 0uuu
0001 1xxx
uuu1 0uuu
---- -10x
---- -uuu
---- -uuu
---- -uuu
---- -uuu
---- -1u0
---- -uuu
MCLR Reset during normal operation
MCLR Reset during Sleep
WDT Reset
000h
000h
WDT Wake-up
PC + 1
000h
PC + 1(1)
Brown-out Reset
Interrupt Wake-up from Sleep
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).
2004 Microchip Technology Inc.
DS30498C-page 179
MICROCHIP [ MICROCHIP ]
