參數(shù)資料
型號: 16F628
廠商: Microchip Technology Inc.
英文描述: CAT 5E CROSSOVER PATCH CORD CABLE BLUE 1 FT
中文描述: 基于閃存的8位CMOS微控制器
文件頁數(shù): 29/168頁
文件大?。?/td> 3760K
代理商: 16F628
2002 Microchip Technology Inc.
Preliminary
DS40044A-page 27
PIC16F627A/628A/648A
4.2.2.6
PCON Register
The PCON register contains flag bits to differentiate
between a Power-on Reset, an external MCLR Reset,
WDT Reset or a Brown-out Reset.
REGISTER 4-6:
PCON REGISTER (ADDRESS: 8Eh)
Note:
BOR is unknown on Power-on Reset. It
must then be set by the user and checked
on subsequent RESETS to see if BOR is
cleared, indicating a brown-out has
occurred. The BOR STATUS bit is a “don't
care” and is not necessarily predictable if
the brown-out circuit is disabled (by
clearing
the
BOREN
Configuration word).
bit
in
the
U-0
U-0
U-0
U-0
R/W-1
U-0
R/W-0
R/W-x
OSCF
POR
BOR
bit 7
bit 0
bit 7-4
Unimplemented:
Read as '0'
bit 3
OSCF
: INTOSC oscillator frequency
1
= 4 MHz typical
0
= 37 kHz typical
bit 2
Unimplemented:
Read as '0'
bit 1
POR
: Power-on Reset STATUS bit
1
= No Power-on Reset occurred
0
= A Power-on Reset occurred (must be set in software after a Power-on Reset occurs)
bit 0
BOR
: Brown-out Reset STATUS bit
1
= No Brown-out Reset occurred
0
= A Brown-out Reset occurred (must be set in software after a Brown-out Reset occurs)
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
’1’ = Bit is set
’0’ = Bit is cleared
x = Bit is unknown
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