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PIC12F635ESL 数据表(PDF) 91 Page - Microchip Technology

部件名 PIC12F635ESL
功能描述  PIC12F635/PIC16F636/639 Data Sheet
PDF  234 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

PIC12F635ESL 数据表(HTML) 91 Page - Microchip Technology

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© 2007 Microchip Technology Inc.
DS41232D-page 89
PIC12F635/PIC16F636/639
TABLE 8-1:
REGISTERS ASSOCIATED WITH PROGRAMMABLE LOW-VOLTAGE DETECT
REGISTER 8-1:
LVDCON: LOW-VOLTAGE DETECT CONTROL REGISTER
U-0
U-0
R-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
—
IRVST(1)
LVDEN
—
LVDL2
LVDL1
LVDL0
bit 7
bit 0
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
bit 7-6
Unimplemented: Read as ‘0’
bit 5
IRVST: Internal Reference Voltage Stable Status Flag bit(1)
1
= Indicates that the PLVD is stable and PLVD interrupt is reliable
0
= Indicates that the PLVD is not stable and PLVD interrupt must not be enabled
bit 4
LVDEN: Low-Voltage Detect Module Enable bit
1
= Enables PLVD Module, powers up PLVD circuit and supporting reference circuitry
0
= Disables PLVD Module, powers down PLVD circuit and supporting reference circuitry
bit 3
Unimplemented: Read as ‘0’
bit 2-0
LVDL<2:0>: Low-Voltage Detection Level bits (nominal values)
111
= 4.5V
110
= 4.2V
101
= 4.0V
100
= 2.3V (default)
011
= 2.2V
010
= 2.1V
001
= 2.0V(2)
000
= Reserved
Note 1:
The IRVST bit is usable only when the HFINTOSC is running.
2:
Not tested and below minimum operating conditions.
Name
Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0
Value on
POR, BOR
Value on
all other
Resets
INTCON
GIE
PEIE
T0IE
INTE
RAIE
T0IF
INTF
RAIF
0000 000x
0000 000x
PIE1
OSFIE
C2IE
C1IE
LCDIE
—LVDIE
—
CCP2IE
0000 -0-0
0000 -0-0
PIR1
OSFIF
C2IF
C1IF
LCDIF
—LVDIF
—
CCP2IF
0000 -0-0
0000 -0-0
LVDCON
—
—IRVST
LVDEN
—
LVDL2
LVDL1
LVDL0
--00 -100
--00 -100
Legend:
x
= unknown, - = unimplemented read as ‘0’. Shaded cells are not used by the PLVD module.



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