參數(shù)資料
型號： PIC16CR7X
廠商： Microchip Technology Inc.
英文描述： 28/40-Pin, 8-Bit CMOS ROM Microcontrollers
中文描述： 28/40-Pin，8位微控制器的CMOS光盤
文件頁數(shù)： 97/172頁
文件大小： 1506K
代理商： PIC16CR7X
2007 Microchip Technology Inc.
DS21993C-page 95
PIC16CR7X
12.10 Power Control/Status Register
(PCON)
The Power Control/Status Register, PCON, has two
bits to indicate the type of Reset that last occurred.
Bit 0 is Brown-out Reset Status bit, BOR. Bit BOR is
unknown on a Power-on Reset. It must then be set by
the user and checked on subsequent Resets to see if
bit BOR cleared, indicating a Brown-out Reset
occurred. When the Brown-out Reset is disabled, the
state of the BOR bit is unpredictable.
Bit 1 is POR (Power-on Reset Status bit). It is cleared
on a Power-on Reset and unaffected otherwise. The
user must set this bit following a Power-on Reset.
TABLE 12-3:
TIME-OUT IN VARIOUS SITUATIONS
TABLE 12-4:
STATUS BITS AND THEIR SIGNIFICANCE
TABLE 12-5:
RESET CONDITION FOR SPECIAL REGISTERS
Oscillator Configuration
Power-up
Brown-out
Wake-up from
Sleep
PWRTE =
0
72 ms + 1024 T
OSC
72 ms
PWRTE =
1
1024 T
OSC
—
XT, HS, LP
RC
72 ms + 1024 T
OSC
72 ms
1024 T
OSC
—
POR
(PCON<1>)
BOR
(PCON<0>)
TO
(STATUS<4>)
PD
(STATUS<3>)
Significance
0
0
x
x
1
0
1
x
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
0
x
x
0
1
1
0
1
1
0
1
1
1
1
0
0
1
1
1
1
u
1
u
0
Condition
Program
Counter
000h
000h
000h
000h
PC + 1
000h
PC + 1
(1)
STATUS
Register
PCON
Register
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:
When the wake-up is due to an interrupt and the GIE bit is set, the PC is loaded with the interrupt vector
(0004h).
0001 1xxx
---- --0x
000u uuuu
---- --uu
0001 0uuu
0000 1uuu
uuu0 0uuu
0001 1uuu
---- --uu
---- --uu
---- --uu
---- --u0
uuu1 0uuu
---- --uu
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