PIC16F747 Microchip Technology Inc., PIC16F747 Datasheet - Page 181

• Manufacturer Part Number: PIC16F747
• Description: 28/40/44-pin, 8-bit Cmos Flash Microcontrollers With 10-bit A/d And Nanowatt Technology
• Manufacturer: Microchip Technology Inc.

TABLE 15-1:
TABLE 15-2:
TABLE 15-3:
 2004 Microchip Technology Inc.
XT, HS, LP
EXTRC, INTRC
T1OSC
Note 1:
Legend: u = unchanged, x = unknown
Power-on Reset
MCLR Reset during normal operation
MCLR Reset during Sleep
WDT Reset
WDT Wake-up
Brown-out Reset
Interrupt Wake-up from Sleep
Legend: u = unchanged, x = unknown, — = unimplemented bit, read as ‘0’
Note 1:
Configuration
Oscillator
POR
0
0
0
1
1
1
1
1
CPU start-up is always invoked on POR, BOR and wake-up from Sleep. The 5 s-10 s delay is based on
a 1 MHz system clock.
When the wake-up is due to an interrupt and the GIE bit is set, the PC is loaded with the interrupt vector
(0004h).
BOR
x
x
x
0
1
1
1
1
TIME-OUT IN VARIOUS SITUATIONS
STATUS BITS AND THEIR SIGNIFICANCE
RESET CONDITION FOR SPECIAL REGISTERS
T
PWRT
Condition
PWRTE = 0
+ 1024 • T
T
PWRT
—
TO
1
0
x
1
0
0
u
1
Power-up
OSC
PD
1
x
0
1
1
0
u
0
PWRTE = 1
1024 • T
5-10 s
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
—
OSC
(1)
Program
PC + 1
Counter
PC + 1
000h
000h
000h
000h
000h
T
PWRT
(1)
PWRTE = 0
+ 1024 • T
T
PWRT
—
Brown-out Reset
0001 1xxx
000u uuuu
0001 0uuu
0000 1uuu
uuu0 0uuu
0001 1xxx
uuu1 0uuu
Register
Status
OSC
PWRTE = 1
1024 • T
5-10 s
PIC16F7X7
—
OSC
(1)
---- -10x
---- -uuu
---- -uuu
---- -uuu
---- -uuu
---- -1u0
---- -uuu
DS30498C-page 179
Register
PCON
Wake-up from
1024 • T
5-10 s
5-10 s
Sleep
OSC
(1)
(1)